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1. 3 Carefully remove the engine and exhaust system from the spur gear area to allow enough room to remove the spur gear 4 Remove the three screws on the slipper clutch assembly using a 2 5mm hex wrench Slide the spur gear off of the slipper shaft If the spur gear is too tight on the shaft gently pry on the back of the gear with a flat screw driver to loosen it Repeat the above steps in reverse order to install the new spur gear Slayer uses a digital servo and a single heavy duty servo saver for powerful responsive steering Adjusting The Steering System 1 Remove the servo horn and steering link from the servo Disconnect the steering link from the servo saver 2 Adjust the steering link to be 31 7mm use Steering Servo Horn Link Length Template below to set length 3 Switch on the power to the receiver and the transmitter 4 Adjust the steering trim on the transmitter to the neutral 0 position 5 Connect one end of the steering link to the servo saver arm and the other end to the servo horn 6 Position the steering servo saver arm perpendicular to the centerline of the vehicle 7 While holding the steering servo saver arm in the position mentioned in step 6 install the servo horn onto the servo so the steering link is parallel with the centerline of the vehicle This will automatically set the servo horn at the 7 degree offset shown in the illustration 31 7mm Steering
2. M DDEL 59D8 BEFORE YOU PROCEED SAFETY PRECAUTIONS TOOLS SUPPLIES AND REQUIRED EQUIPMENT ANATOMY OF YOUR SLAYER QUICK START GETTING UP TO SPEED GLUING THE TIRES AND DECORATING YOUR SLAYER THE TRAXXAS TQ RADIO SYSTEM THE TRX 3 3 RACING ENGINE DRIVING YOUR SLAYER BASIC TUNING ADJUSTMENTS APN TEES AND STORING YOUR SLAYER ADVANCED TUNING ADJUSTMENTS Z e SLAYER INTRODUCTION Thank you for purchasing a Traxxas Slayer The Slayer is designed to simulate the speed and excitement of full scale Pro 4 short course race trucks 4WD Short Course Racing brings together the most horsepower and the most suspension travel for incredible side by side fender banging racing action Engines scream at the redline as dirt and rocks roost from all four tires Only the fastest most powerful trucks dare to compete The Traxxas Slayer Pro 4WD brings the sound smell and excitement of Pro 4 short course racing right into your own backyard The TRX 3 3 Racing Engine is the most powerful engine of its size ever available in a Ready To Run truck Advanced engineering and design along with thousands of hours of testing puts the TRX 3 3 in a class by itself Each part of the TRX 3 3 from the air filter on the slide carburetor to the tip on the dyno tuned exhaust system has been carefully engineered to provide maximum power over the broadest rpm range We know you re excited about getting your new Slaye
3. See page 24 Learn the proper way to use the EZ Start electric starting system 13 Start the engine See page 26 Learn to use the correct starting procedure for your TRX 3 3 LJ 14 Break in your engine See page 26 Follow the break in instructions exactly to ensure the best performing longest lasting engine s 15 Tune your engine See page 28 Learn how to set the fuel mixture needles for optimum engine performance L 16 Drive your Slayer See page 31 Learn to use the two speed function on your truck along with important driving precautions LI 17 Maintaining your Truck See pages 38 39 Follow these critical steps to maintain the performance of your Slayer and keep it in excellent running condition d The Quick Start Guide is not intended to replace the full operating instructions available in this manual Please read this entire manual for complete instructions on the proper use and maintenance of your Slayer Look for the Quick Start logo at the bottom of Quick Start pages a SLAYER 7 Always wear safety glasses to prevent glue from splattering into your eyes The acetone in fingernail polish remover will remove excess glue from your fingers For best results while gluing clean the bead of the tires and the grooves of the wheels with denatured alcohol before applying glue This removes any mold release agent residue from the tires and wheels providing a bet
4. 1 Lean EN a FR b Saly NE T THE TRX 3 3 RACING ENGINE Slightly lean fuel mixtures deliver stronger more efficient combustion and more power but with less lubrication Slightly rich fuel mixtures deliver cooler running and more lubrication but with slightly less power Tuning the engine means finding the perfect balance between the two excellent power to meet your needs while maintaining good lubrication for long engine life The optimal fuel mixture setting is rich to provide a safety margin against having a lean condition if some variable changes such as the temperature from one day to the next General fuel mixture settings are measured by the number of turns the needles are turned out from fully closed The fuel mixture settings have been pre set from the factory to typical break in settings Do not readjust your carburetor from the factory settings until after the engine is started and running and you have been able to observe the engine running to assess what minor adjustments may be required to compensate for fuel temperature and altitude Adjustments are usually made in 1 8 or 1 16 turn increments If the engine sticks at TDC see page 39 for instructions on freeing the engine The Idle Speed Adjustment The idle speed screw controls the closed position of the throttle slide When the throttle servo is in its neutral position the throttle slide should be stopped against the idle ad
5. avoid breaking in the engine on extremely hot or cold days see page 28 Pay careful attention to the fuel level Do not allow the fuel tank to run completely empty An extremely low fuel level causes the mixture to run too lean This could result in a burned glow plug or extremely high engine temperatures Keep extra Traxxas glow plugs handy The break in process can cause deposits to form on the plug leading to plug failure Change or clean your air filter after break in Follow the instructions exactly for each of the first 5 tanks of fuel Starting Your TRX 3 3 Racing Engine for the First Time Before you start your TRX 3 3 Racing Engine for the first time make sure you have read all instructions and precautions in this manual Pay close attention to the tank by tank break in instructions in the next section and make sure you have read and understood them before you run your engine Your engine must be at room temperature 70 F or 21 C or above the first time you start it If it s cooler than room temperature outside remove all fuel and keep your Slayer indoors until you re ready to start it and then take it outside If it s colder than 45 degrees special considerations should be made See cold weather break in on page 28 We do not recommend running the model in temperatures below 35 degrees 1 Turn on the radio system see page 14 2 Make sure the throttle trigger on the transmitter
6. in correct amounts are needed for proper combustion It is the carburetor s job to mix the air and fuel together atomize the fuel in the correct proportion for the best possible combustion This is the ideal air fuel ratio The ideal air fuel ratio required for the engine remains roughly constant Due to variations in atmospheric conditions temperature humidity altitude etc fuel flow adjustment valves called fuel mixture needles are required to meter the fuel and maintain the ideal air fuel ratio in these ever changing conditions For example colder air is more dense more air molecules for a given volume of air and therefore requires more fuel more fuel molecules to maintain the correct air fuel ratio Warmer air is less dense fewer air molecules and therefore needs less fuel to maintain the correct air fuel ratio The tuning needles are there to adjust how much fuel is made available for the carburetor to mix with the available air atomization Warm Air Less Dense Cold Air More Dense The amount of fuel metered and atomized by the carburetor is controlled by the two mixture needles the high speed needle and the low speed needle The low speed needle is used to meter the fuel used by the engine at idle and low rpm part throttle engine speed The high speed needle is used to meter the fuel when the throttle is open from part throttle to wide open throttle WOT Two needles on the TRX 3 3 Racing
7. the brake linkage Less Brake spring should barely touch the rod guide z when the servo is in neutral position closed throttle This will ensure no brake drag during operation of the vehicle The brake adjustment knob can be threaded away from the spring for less braking power if desired Do not adjust knob to apply pressure against the spring while the servo is in the neutral position This will induce brake drag and cause undesirable handling The position of the z bend from the Front of Truck factory is in the middle position of the ame servo horn Changing this position will affect the way the brake force is applied The brake adjustment knob will need to be readjusted if this position is changed Brake Pad Wear and Replacement During normal use the brake pads should wear at a relatively slow rate However if the brake pads wear down close to the metal pad holders they should be replaced Any more wear than this could cause damage to the brake parts and improper operation of the brake system BASIC TUNING ADJUSTMENTS SLAYER 37 If the engine is worn or damaged enough to require replacing the piston sleeve or connecting rod consider exchanging your old engine for a brand new engine under the terms of the Traxxas Lifetime Engine Replacement Plan ERP It could save you time and effort Details are in your model s documentation package The TRX 3 3 Racing Engine is designed to be easy to rebuild C
8. 3 Racing Engine Handling the Fuel Follow all directions and warnings on the fuel can Keep the fuel tightly capped at all times Some components in the fuel can evaporate very quickly and upset the balance of the fuel Do not store unused fuel in the fuel dispenser Immediately return fresh unused fuel back into the fuel can Do not mix old and new fuel Never mix different fuel brands together Store the fuel in a cool dry location away from any source of heat ignition or combustion Read and follow the safety precautions on page 4 in this manual qw wv Filling the Fuel Tank Use a fuel dispensing bottle Traxxas Top Fueler part 5001 to put fuel into Slayer s fuel tank To fill the fuel bottle squeeze the air out insert the dispenser tip into the fuel can and release your grip on the bottle As the bottle expands fuel will be drawn into it To fill your model pull up on the fuel cap handle insert the tip of the fuel bottle and squeeze to dispense the fuel The TRX 3 3 Racing Engine in this model is equipped with a specially designed two stage air filter to deliver maximum filtering efficiency and performance while protecting your engine from dust and dirt during extended operating conditions Use only the supplied filter You will not improve engine performance by switching to an aftermarket filter and you may risk engine damage due to poor filtration The two stage TRX Racing Filter consists of the fo
9. AA ZZ 2 EZ Start Drive Unit c e w e EZ Start Motor Air Filter y CA oO S Fuel Intake Crankcase Air Intake Engine Mount Carburetor Throttle Arm Flywheel Crankshaft Clutch Bell Tuned Pipe Glow Plug Wire EZ Start Plug Ground Wire T EZ Start Positive Wire Controller Negative Wire O Pressure Line Fuel Line el Shut off Clamp aan uel Tan SLAYER 17 18 e SLAYER THE TRX 3 3 RACING ENGINE You ll find these Nitro R C engine terms throughout this section of the manual 15 15 or 15 refers to the displacement of the engine The TRX 2 5 Racing Engine is 15 cubic inches or 2 5 cubic centimeters cc The name TRX 2 5 is derived from the cc measurement 20 20 or 20 refers to the size of the engine The TRX 3 3 is 20 cubic inches or 3 3 cubic centimeters cc The name TRX 3 3 is derived from the cc measurement ABC Abbreviation for aluminum brass and chrome Refers to engine construction that consists of an aluminum piston that slides in a chrome plated brass sleeve The TRX 3 3 uses ABC construction Air filter The air filter sits atop the carburetor and prevents harmful dust and dirt from entering the engine Dirt ingestion is the number one cause of premature engine failure so the engine should never be run without the air filter in place BDC Bottom dead center The bottom most position of the e
10. Engine provide precise control of the air fuel ratio across the engine s entire rpm range The maximum possible fuel flow is always controlled by the high speed needle It works like the main water valve on a garden hose Turn it clockwise to close the valve counter clockwise to open it When the throttle is at idle or partially open the low speed needle meters the fuel flow at the outlet needle seat where the fuel enters the carburetor venturi This second valve acts like the spray nozzle at the end of the garden hose in our example When you accelerate from idle the throttle opens and the low speed needle is pulled away from the needle seat This allows more fuel to flow with the increased air flow As the throttle is increased the low speed needle is pulled completely away from the needle seat leaving it fully open At that Water Valve Controls Overall Flow High Speed Needle 99 Water Nozzle Controls Fine Flow Low Speed Needle point fuel metering is entirely controlled by the high speed needle Again using our water hose example when the spray nozzle at the end of our garden hose is fully open then the main water valve can be used to adjust how fast the water flows The engine s performance is directly linked to the fuel mixture Richening the fuel mixture increases the amount of fuel in the air fuel mixture ratio and leaning the fuel mixture decreases the amount of fuel in the air fuel mixture ratio
11. If the engine shuts off immediately without speeding up then richen the low speed needle 1 8 turn make several more high speed runs and retest When the low speed needle is set correctly the engine s throttle response should be very quick even to the point of making it difficult to keep Slayer from doing a wheelie when you accelerate Fuel Mixture Adjustment Chart n Slightly Humidity Lower vare dinem Slightly richer Slightly Higher TOR Slightly leaner Tsala Lower Less dense Leaner barometer Higher More dense Richer Temperature Lower More dense Richer Higher Less dense Leaner Altitude Lower More dense Richer Higher Less dense Leaner owe Lower Leaner Higher Richer When adjusting the low speed fuel mixture it is very important to make several high speed runs with Slayer between adjustments to clear out any excess fuel Perform the pinch test immediately after If the engine is allowed to idle for a long period of time it could load up with fuel and give you an inaccurate measurement from your pinch test Higher nitro requires a richer fuel mixture When running 33 fuel richen your high speed needle 3 4 turn if previously running 20 nitro and then re tune the engine for maximum performance See page 20 for more information SLAYER e 29 30 e SLAYER THE TRX 3 3 RACING ENGINE Idle Soeed Adjustment Once the high and low speed mixtures have been set reduce the idle speed to
12. Link Length Template If you are using an aftermarket servo it is important to use a servo horn designed for Slayer Optional steering servo horns are sold separately for use with non Traxxas servos Servo Saver Tuning An optional stiffer spring is available for the servo saver when using servos with metal gear sets see parts list for details Do not use this spring with standard Traxxas high torque servos Slayer is equipped with a disc brake that rides on the yoke of the transmission s front output shaft The brake is preset at the factory and should not require attention As the brake material wears future adjustments may be necessary Brake Shoulder Screw Adjustment The two shoulder bolts that are used to secure the brake pads to the transmission housing may need to be adjusted periodically as the brake material wears down They should be tightened so a 0 50mm 020 gap exists between the disk and the brake pad on the transmission side Adjust in one of the following ways 1 Use a 50mm feeler gauge between the brake pad insert and brake disk 2 Push the outer brake pad firmly against the inner pad with your finger sandwiching the brake disk between the brake calipers Tighten the brake shoulder bolts until they just barely touch the brake pads Do not over tighten these fasteners or you could damage the brake calipers Loosen each of the shoulder bolts by 1 turn Brake Linkage Adjustment When correctly adjusted
13. at a faster and faster rate as the suspension is compressed It feels as though the shock spring gets progressively stiffer the more you compress the suspension On a linear suspension arrangement the wheel force increases linearly as the suspension is compressed The spring does not feel any stiffer even when the suspension is fully compressed This provides a very plush feeling suspension with seemingly bottomless suspension travel 60mm Progressive 2 40mm up 20mm down Medium 60mm Progressive 3 40mm up 20mm down High There are two different rocker arm sets that are compatible with Slayer Both sets will allow the wheel to travel a total of 60mm in the vertical direction From the ride height position the wheel will be able to travel 40mm in the upward direction bump and 20mm in the downward direction droop The Slayer comes equipped with the Progressive 2 rocker set which offers a good balance of progressive rate for predictable body roll brake dive and high speed stability The Progressive 3 rocker arm set available separately uses a higher progressive rate that will provide a firmer feel reducing body roll brake dive and rear squat Installation of the Progressive 3 rocker arm requires the following parts 5359 Progressive 3 Rocker Arm Set 5133 Pushrod Spacers these are required to lengthen the pushrods to maintain proper suspension travel The chart below demonstrate the effect of the various rocke
14. cause momentary loss of control always allow a safety margin in all directions around your model to prevent collisions The engine can be loud If the noise makes you uncomfortable wear ear protection Be considerate of your neighbors by not running your model early in the morning or late in the evening Most importantly use good common sense at all times D EQUIPMENT Your Slayer comes with a set of specialty metric tools You ll need to purchase other items available from your hobby dealer to operate and maintain your model For more information on radio system batteries see Use the Right Batteries on page 11 l Recommended Equipment Turnbuckle wrench Suspension multi tool 4 way wrench Ponnan These items arenot required wrenc for the operation of your model but are a good idea to include in any R C toolbox e Safety glasses e Thin hobby quality cyanoacrylate instant tire glue CA glue e Hobby knife e Side cutters and or needle nose pliers Philips screwdriver e Soldering iron Shock wrench 8mm slipper clutch wrench Glow plug 1 5mm L wrench 2 0mm T wrench 2 5mm L wrench 2 5mm T wrench wrench Extra oiled air filter set Suspension tuning pre filter and primary filter shims and hollow balls 10 quart 5010 20 quart 5020 33 quart 5030 10 gallon 5060 20 gallon 5070 33 gallon 5080 Traxxas Top Fuel Power Plus NiCa
15. due to overloads caused by drivetrain friction or over revving caused by loose or missing parts Don t tow anything with your Slayer The engine is cooled by airflow created by speed Towing creates a high load on the engine and at the same time limits cooling of the engine due to low vehicle speed If your Slayer gets stuck stop driving immediately Move the vehicle and then continue driving Never turn off the radio system while the engine is running The truck could run out of control Driving Tips 9 Ne v v Slayer is very fast Select a large area to drive with few opportunities for collision until you become familiar with Slayer s speed and handling Do not apply brakes and turn the wheel at the same time You could tip the truck over When jumping apply some throttle while Slayer is in the air to keep the truck s nose up and land level on all 4 wheels Be careful not to over rev the engine or land at full throttle Either could seriously damage your Slayer If the nose of the truck is too high then quickly tap the brake to level the truck in the air Drive over large obstacles such as curbs and rocks at an angle instead of head on This will allow the suspension to articulate and absorb the impact much easier Change or clean the pre filter element in your air filter after each hour of running Change or clean the primary filter element every 3 4 hours of running This is critical for
16. fast sluggish reliable stalling smooth sound muffled sound etc Once the engine is tuned then observe the temperature The temperature gauge can aid you in tuning by giving you a relative indication of how your adjustments are affecting the engine and to help prevent you from reaching excessive engine temperatures For example as you lean the fuel mixture the engine performance will increase along with the temperature If you continue to lean the fuel mixture and the temperature increases but the engine performance does not change then you have exceeded the maximum safe lean setting Make note of the engine temperature Generally try to keep your engine from exceeding 270 F when measured at the glow plug If necessary increase airflow to the engine by cutting out the rear of the body windshield and front valance In some situations the engine may perform very well with no stalling lagging or hesitation at temperatures above 270 F particularly in very hot climates If richening the fuel mixture to bring the temperature down to 270 F results in poor sluggish performance engine never cleans out then return the engine back to a satisfactory state of tune based on how it sounds and performs always with a visible stream of blue smoke coming from the exhaust If engine temperature is exceeding 270 F with proper cooling and no signs of abnormal running then avoid running the engine at its maximum lean setting Watch closely for a
17. head around the glow plug area should slowly sizzle for approximately 6 to 8 seconds around 200 to 210 degrees If the water sizzles for only a few seconds then it is likely that it is over 220 degrees and needs to cool down If the water takes a long time or does not evaporate at all then the engine is too cool os Z8 e SLAYER Before you begin tuning the engine should be warmed up to its normal operating temperature and running slightly rich All final tuning adjustments must be made to the engine at its normal operating temperature You can tell the engine is running rich by noting any of the following Sluggish acceleration with blue smoke coming from the exhaust Slayer may not shift into second gear There is unburned fuel spraying from the exhaust tip Leaning the high speed fuel mixture increases performance High Speed Fuel Mixture Adjustment With the engine warm and running at a rich setting gradually lean the high speed fuel mixture in 1 16 turn increments Make several high speed passes after each adjustment to clear out the engine and note any change in performance The TRX 3 3 is extremely powerful Remember to apply the throttle gradually to prevent wheelies or loss of control Continue this procedure until there is no longer any performance improvement If any one of the following conditions occurs the fuel mixture is already past the maximum safe lean setting 1 There is no longer any
18. in procedures as outlined in this Owners Manual This along with the steps listed above will ensure a good break in for your new nitro engine and provide many hours of enjoyment The engine s performance High Speed Power Loss depends on the fuel Overheating mixture Turn the mixture LEAN needles clockwise to lean the fuel mixture and Optimum counterclockwise to richen for High Speed Cutting out stalling RACING it Leaning the fuel mixture Performance EVEHVDAY will increase engine Optimum RUNNING power up to the engine s He oe ow Spee mechanical limits Neve Operation SAE E AAR l Leaning the engine beyond the safe RICH allowable limits will result Sluaai uggish Performance in poor performance and Break In Settings almost certain engine damage Indications of an overly lean mixture include Overheating temperature beyond 270 F at the glow plug Little or no blue smoke coming from the exhaust wv If any of these conditions are present stop immediately and richen the high speed mixture 1 4 turn The engine will probably be slightly rich at that setting and you can then retune for performance Always tune for performance by starting rich and moving leaner toward the ideal setting Never try to tune from the lean side There should always be a light stream of blue smoke coming from the exhaust For owners that do not have access to a temperature probe a drop of water on the cooling
19. indicated with that function If the Motor LED fails to light and the starter fails to operate then the EZ Start is in protection mode If the Glow Plug LED fails to light the glow plug may be bad or the glow plug wire may be damaged or disconnected Protection Mode The EZ Start uses Smart Start technology to monitor the condition of the system and detect failures The controller monitors the load being placed on the EZ Start motor If the load becomes excessive the system shuts off power to the motor to prevent costly damage to the motor and the controller This may occur for example if the engine floods with fuel during starting The starter spins at first but when excessive fuel in the combustion chamber begins to lock up the engine the starter motor slows under the heavier load This causes the protection circuit to shut off the power to the motor Allow at least 3 minutes for the starter motor to cool and the circuit to automatically reset before continuing Use the time to find and eliminate the condition that caused the excessive load on the starter motor Use a Strong Starter Battery A weak starter battery or one that has not been fully charged may not deliver enough power to crank the engine over at the appropriate rpm to keep the piston from sticking at top dead center TDC A new engine will typically have a tight fit between the piston and the top of the sleeve This is a tapered fit and a tight piston sle
20. into the hole in the end of the slipper shaft This locks the shaft for adjustments Turn the adjustment nut clockwise to tighten less slippage and counter clockwise to loosen more slippage The slipper clutch has two functions 1 Limiting the engine s torque output to the wheels to prevent wheelspin on low traction surfaces and help to prevent damage to the gears in the transmission during on throttle landings 2 Protecting the drivetrain from sudden impact or shock loads such as landing from a jump with the engine at full throttle From the factory the slipper clutch is set for minimal slippage just enough to protect the drivetrain from shock loads On slippery low traction surfaces such as a hard packed dry racetrack you may benefit from loosening the slipper adjustment nut to allow for more clutch slippage This will make the truck easier and more forgiving to drive by helping to reduce the amount of wheel spin Loosening the slipper adjustment can also improve performance on extreme high traction surfaces by preventing the front end from lifting off of the ground when accelerating Make slipper adjustments in small 1 8 turn increments The maximum tight setting for the slipper is just at the point where there is little or no tire slippage on a high traction surface such as carpet or a prepared racetrack The slipper should not be tightened to the point that clutch slippage is completely eliminated Do not overtighten the s
21. is in the idle neutral position 3 Connect the EZ Start controller according to the instructions on page 24 4 Press the starter button in short two second bursts and watch for fuel moving through the fuel line up to the carburetor Watch closely The fuel moves very fast If the fuel doesn t move through the line within 5 seconds prime the engine by briefly one or two seconds covering the exhaust outlet with your finger until the fuel is just visible in the carburetor fuel line Watch carefully If the engine is primed too long it will flood with fuel and stop turning 5 Once fuel reaches the carburetor the engine should quickly start and idle 6 Disconnect the EZ Start controller from the model 7 Proceed with the engine break in 8 Do not rev your engine with no load wheels off the ground If your engine doesn t start go online to www traxxas com support If your factory fuel mixture settings have been altered refer to page 23 If you still have problems contact Traxxas Customer Support at 1 888 TRAXXAS or support traxxas com 1 Drive the model with the body off 2 Driving procedure Gently pull the throttle trigger to 1 4 throttle over a 2 second count Then gently apply the brake to stop Count the two seconds out while accelerating one thousand one one thousand two and then stop Operate the throttle trigger as smoothly as you can Repeat this starting and stopping procedure until the first tank of fuel
22. oil is affected by extremes in operating temperature an oil of certain viscosity will become less viscous at higher temperatures and more viscous at lower temperatures Operating in regions with cold temperatures may require lower viscosity oil From the factory the shocks are filled with SAE 40W silicone oil Only use 100 silicone oil in the shock For shock piston tuning see Advanced Tuning Adjustments on page 42 Replacing Shock Oil The shocks have to be removed from the vehicle and disassembled to change the oil 1 Remove the lower spring retainer and shock spring 2 Remove the upper shock cap using the shock wrench and the suspension multi tool 3 Empty the used shock oil from the shock body 4 Fill the shock with new silicone shock oil up to the top of the shock body Important The shocks are assembled at the factory with a center to center distance between the rod end balls of 87mm Any time the shocks are removed and disassembled this distance should be checked to ensure proper operation of the suspension rs CHR ej i EN _ E z 87mm a e SLAYER 33 p For caster roll center and optional rocker arm tuning see Advanced Tuning Adjustments on page 40 A camber gauge available at your local hobby shop can be a useful tool for alignment setting All of the toe links are installed on the truck so that the left hand thread indicators point to the
23. past the X ring seal when it is installed and compressed by the bottom cap of the shock Doing so will damage the seal and cause shock oil to leak 42 SLAYER ADVANCGED TUNING ADJUSTMENTS Multi tool Shock Functions Shock Pistons The shock pistons can be replaced with the available optional pistons to vary the amount of damping Optional pistons with bypass holes that are larger 1 4mm than the factory installed stock pistons can be used to decrease damping From the factory Slayer is equipped with 1 3mm pistons in the front and rear Shock disassembly The shocks must be removed from the vehicle and disassembled to change the pistons Use the shock exploded views included with the model to aid in the assembly process 1 Remove the spring and lower spring retainer from the shock 2 Remove the shock cap A and empty the shock body of shock oil 3 Remove the lower cap B and the X ring from the shock body 4 Use side cutters to grip the shock shaft just above the rod end C Remove the rod end from the shock shaft using the suspension multi tool C 5 Remove the shock shaft with piston from the shock body out through the top of the shock body C Remove Install Rod End Shock assembly 1 Replace the stock piston with desired optional piston Be careful not to lose the small washer located below the piston 2 Position the new piston onto the shock shaft above the small washer Grip the threads of
24. same direction This makes it easier to remember which way to turn the wrench to increase or decrease toe link length the direction is same at all four corners Note that the groove in the hex indicates the side of the toe link with the left hand threads Gm x S gj Left Front Right Front 34 SLAYER BASIC TUNING ADJUSTMENTS The alignment settings are critical for optimizing the performance of Slayer Adjust your alignment as carefully and precisely as you possibly can Toe Adjustment The wheels can be adjusted to point straight ahead or have a toe in or toe out setting To help you remember look down at your feet For toe in your feet point towards each other For toe out your feet point away from each other The toe angle of the front wheels can be adjusted by varying the length of the toe links that connect the steering linkage to the front axle carriers The toe angle of the rear wheels can be adjusted by varying the length of the metal toe links that connect the rear bulkheads to the rear axle carriers The front toe links and rear toe links are equipped with turnbuckles The lengths of the toe links can be adjusted by turning them with the included turnbuckle wrench Increase Length Decrease Length Toe Base Factory Settings Front 0 degrees Rear 1 degree toe in each side Under certain conditions toe in can be increased to a maximum of 3 degrees Static C
25. the life of your engine Running time includes the engine break in period SLAYER 31 32 e SLAYER BASIC TUNING ADJUSTMENTS This tuning and setup guide is separated into two sections Basic and Advanced Slayer does not require any specialized knowledge or understanding of its unique suspension and drive train to perform typical everyday setup and track tuning adjustments Adjustment procedures for alignment spring rate damping steering and ride height are covered in the basic tuning section Adjustments for the gear ratio two speed shift point slipper clutch and brake are also covered In most cases the basic information is all that is needed to tune Slayer to perform well on a variety of surfaces Slayer was engineered to provide sophisticated additional tuning options well beyond the basics that allow expert users to extract the maximum performance from the truck The advanced tuning section beginning on page 40 covers topics such as optional suspension rockers roll center adjustment caster adjustment bump steer tuning differential setup and fine tuning the two speed gear ratios Make sure you fully understand the basic adjustments before experimenting with the advanced adjustments Improper combinations of adjustments can adversely affect the performance of the truck resulting in poor handling If you don t know why you are changing an adjustment then you should leave it at its factory setting Springs The
26. the shaft with side cutters or needlenose pliers and tighten the nut with the 4 way wrench to secure the assembly of lt i Piston Installation Removal 3 Insert the shock shaft assembly through the shock body until the piston bottoms out 4 Lubricate the shaft and X ring with silicone oil 5 Install the X ring over the shaft and into the bore of the shock body 6 Install the lower cap using the suspension multi tool B 7 Slide the bump stop onto the shaft 8 Grip the shaft close to the threads with needle nose pliers or side cutters and thread the rod end onto the shock shaft until the rod end bottoms out C 9 Fill the shock with new silicone shock oil up to the top of the shock body Slowly move the piston up and down always keeping it submerged in oil to release the air bubbles Let the shock sit for a few minutes to allow any remaining air bubbles to surface 10 Slowly thread the upper cap with the installed shock bladder onto the shock body with the suspension multi tool A The excess oil will bleed out of the small hole in the shock cap Tighten the shock cap until snug Use the included steel shock wrench to hold onto shock body while tightening 11 Reinstall the spring and lower retainer Adjusting the Gear Ratio The gear ratio on Slayer can be adjusted for different conditions that may require either increased acceleration or increased top speed Adjusting the gear ratio is accomplished by changi
27. transmitter antenna is fully extended and then fully charged walk away from the model with the transmitter until you reach the farthest distance you plan to operate the model 5 When looking down at model the front wheels should be pointing straight ahead If the wheels are turned slightly to the left 4 Operate the controls on the transmitter once again to be sure that or right slowly adjust the steering trim control on the transmitter the model responds correctly until they are pointing straight ahead 5 Do not attempt to operate the model if there is any problem with the radio system or any external interference with your radio signal at your location os SLAYER 15 Traxxas strongly discourages changing or modifying any part of the TRX 3 3 Racing Engine Old tech tips and tricks that may have boosted the power of other engines could seriously diminish the performance of the TRX 3 3 Racing Engine There s more advanced thinking development and testing in the stock parts of your TRX 3 3 Racing Engine than in many aftermarket manufacturer s performance parts The TRX 3 3 Racing Engine is already the most powerful engine in its class and may not benefit from average low tech aftermarket bolt on performance items 16 SLAYER THE TRX 3 3 RACING ENGINE The TRX 3 3 Racing Engine is the next generation of TRX nitro power The larger displacement and advanced porting generate class leading hor
28. type of filter oil is available at motorcycle pro shops Apply a total of 24 drops of Traxxas air filter oil evenly distributed between the top bottom and sides of the filter element Squeeze the filter element repeatedly to help spread the oil throughout The filter element should be evenly colored by the oil Even color indicates that the oil is spread evenly Do not squeeze out excess oil Note Do not use the air filter oil for anything other than the air filter It is not meant to be a lubricant 6 Reassemble the filter and install it on the engine Make sure the rubber filter neck fits securely on the carb with no gaps or air leaks Primary Filter Cleaning Instructions every 3 4 hours of run time 1 Remove the clip from the air filter and remove from the metal hanger Remove the air filter assembly from the carburetor bore by pulling the entire filter assembly firmly to the side to release it Do not pull straight up 2 Remove the pre filter element 3 Remove the 3x6mm screw in the end of the filter housing Remove the front housing and the primary filter element 4 Clean the filter parts by thoroughly washing in hot soapy water dishwashing detergent works well Repeat twice for the foam filter elements 5 Thoroughly dry the foam pre filter and primary filter elements with a clean towel Dry the remaining filter parts 6 Oil the foam pre filter with 24 drops of air filter oil and the primary filter element with
29. you to feel confident that you own the best performing truck in the market and that it is backed by a team of professionals who aim to provide the highest level of factory support possible Slayer is about experiencing total performance and satisfaction not just with your truck but also with the company that stands behind it Thank you again for going with Traxxas We work hard every day to assure you the highest level of customer satisfaction possible We truly want you to enjoy your new Slayer Carefully read and follow all instructions in this and any accompanying materials to prevent serious damage to your model Failure to follow these instructions will be considered abuse and or neglect Before running your model look over this entire manual and examine the model carefully If for some reason you decide it is not what you wanted then do not continue any further Your hobby dealer absolutely cannot accept a model for return or exchange after it has been run Throughout this manual you ll notice warnings and helpful hints identified by the icons below Be sure to read them D An important warning about personal safety or avoiding damage to your model and related components Special advice from Traxxas to make things easier and more fun Refers you to a page with a related topic Ifyou have any questions about your model or its operation call the Traxxas Technical Support line toll free at 1 888 TRAXXAS 1 888 872 992
30. your model outdoors in a well ventilated area Your TRX 3 3 Racing Engine doesn t usually require priming If you do need to prime your engine watch the fuel line carefully to avoid flooding your engine See page 39 for information on clearing a flooded engine Factory Needle Settings Your carburetor is preset at the factory to give the correct air to fuel ratio and idle speed for engine break in Do not adjust the carburetor unless you observe a poor running condition that requires correction see page 23 for stock settings Higher nitro requires a richer fuel mixture When running 33 fuel richen your high speed needle 3 4 turn if previously running 20 nitro and then re tune the engine for maximum performance See page 20 for more information a 26 SLAYER THE TRX 3 3 RACING ENGINE The TRX 3 3 Racing Engine uses a ringless aluminum brass chrome ABC piston sleeve construction This type of engine design relies on a very precise running fit between the piston and sleeve for cylinder sealing Engine break in is necessary to allow the piston and sleeve to develop an extremely precise fit and optimum cylinder sealing Therefore proper engine break in is critical to achieving the fastest most reliable engine performance Allow yourself about 1 to 1 hours to complete the break in procedure The engine break in period will take 5 tanks of fuel in a Slayer The break in time is not the time to impress you
31. 30 drops of air filter oil 7 Reassemble the filter and install it on the engine Make sure the Pull to the side to remove assembly p 15 rubber filter neck fits securely on the carb with no gaps or air leaks GLAYER 21 See page 29 for more information on how air density affects engine tuning A turn refers to tightening turning in or loosening turning out mixture needles A full turn refers to turning the needle 360 so a 1 2 turn would be 180 a 1 4 turn would be 90 and so on To make the high speed needle easier to see while the body is on we recommend marking the surface white or silver paint A paint pen works very well for this You can also use white correction fluid 22 SLAYER THE TRX 3 3 RACING ENGINE Understanding the Carburetor adjustments The carburetor performs several functions It controls the engine s speed by restricting the intake of air and fuel into the engine It atomizes the fuel suspends the fuel droplets in the air and also controls the air fuel ratio of the mixture entering the engine how much air for a given amount of fuel To help provide a better understanding of engine tuning and why it s necessary the following is a brief explanation of the air fuel combustion process that takes place inside the engine In order to create the cylinder pressure that results in power the engine burns the air fuel mixture Both air and fuel
32. 7 Technical support is available Monday through Friday from 8 30am to 9 00pm central time Technical assistance is also available at Traxxas com You may also e mail customer support with your question at support Traxxas com Join thousands of registered members in our online community at Traxxas com Traxxas offers a full service on site repair facility to handle any of your Traxxas service needs Maintenance and replacement parts may be purchased directly from Traxxas by phone or online at BuyTraxxas com You can save time along with shipping and handling costs by purchasing replacement parts from your local dealer Do not hesitate to contact us with any of your product support needs We want you to be thoroughly satisfied with your new model Toll free support is available to U S residents only ELECE 1100 Klein Road Plano Texas 75074 Phone 972 265 8000 Toll free 1 888 TRAXXAS Traxxas U K P O Box 1128 Winterbourne Bristol BS36 2SH England Phone 44 117 956 1002 Internet Traxxas com E mail support Traxxas com Entire contents 2008 Traxxas Traxxas Ready To Race Ready To Win Slayer and ProGraphix are trademarks or registered trademarks of Traxxas Other brand names and marks are the property of their respective holders and are used only for purposes of identification No part of this manual may be reproduced or distributed in print or electronic media without the express written permission o
33. 8 40 17T 37T Ist 14 76 15 58 16 40 Standard 2nd 10 24 10 81 11 38 16T 40T Ist 14 76 15 8 16 40 Close 2nd 11 16 11 78 12 40 18T 38T Ist 14 76 15 58 16 40 Wide 2nd 942 9 95 1047 itch E of Spur Gear Teeth 2nd gear sets Gear 36 38 40 17T 37T Ist 13 89 14 67 15 44 Standard 2nd 964 10 17 10 71 16T 40T Ist 13 89 14 67 15 44 Close 2nd 10 50 11 09 11 67 18T 38T Ist 13 89 14 67 15 44 Wide 2nd 8 87 9 36 9 85 stock configuration out of the box Tuning The Sealed Gear Differentials Slayer s front and rear gear differentials allow the left and right wheels to spin at different speeds while turning so that the tires do not scuff or skid This decreases the turning radius and increases steering performance The performance of the differentials can be tuned for different driving conditions and performance requirements The differentials are filled with silicone differential fluid and are sealed to maintain consistent long term performance Changing the oil in the differential with either lower or higher viscosity oil will vary the performance characteristics of SLAYER 43 T KLEIN ROAD PLANO TEX As 75074 n 1 y o0 0 1 BBB TRAXXAS uL qu s K gt l M 4 080812 KC1151 lu pa i
34. Piston sleeve The life of the piston and sleeve will vary greatly with how the engine was used and maintained The piston and sleeve should be replaced when they no longer seal effectively loss of compression Symptoms include the engine being difficult to start when warm stalling when warm and stalling when throttle is suddenly closed to idle Replace the wrist pin and G clip whenever the piston and sleeve are replaced After run Procedure You must perform after run maintenance on your Traxxas engine whenever the model will be stored for longer than a few hours Taking the time to prepare your engine for storage will reward you with longer engine life easier starting and better performance When a nitro engine is shut off some excess unburned fuel remains in the engine The methanol in model engine fuel is hygroscopic which means it easily attracts and absorbs moisture This moisture can cause rust and corrosion on the steel engine parts crankshaft bearings wrist pin and starter shaft if the fuel is not removed from the engine There are after run oil products available from your hobby dealer or you can use WD 40 a common household lubricant To ensure your TRX 3 3 Racing Engine is protected from internal corrosion use the following procedure 1 Whenever possible shut off the engine by pinching the fuel line closed This allows most of the excess fuel to be consumed by the engine Be sure the throttle is in the idle posit
35. RX 3 3 RACING ENGINE 2 As the engine loosens the idle speed may increase and cause the model to try to creep forward when stopped Reduce the idle speed by turning the idle adjustment see page 17 on the carburetor counterclockwise 3 When the fuel tank is nearly empty shut off the engine and refuel From here on you do not need to let the engine cool between tanks 1 Driving procedure Gently pull the throttle trigger to full throttle over a 3 second count Then gently apply the brake to stop Count the three seconds out while accelerating one thousand one one thousand two one thousand three and then stop Repeat this starting and stopping procedure until the fourth tank of fuel is nearly empty 2 Apply the throttle gradually Your finger should not reach full throttle until the end of the three second count Slayer may try to shift into second gear If it does reduce the throttle input Do not let Slayer shift out of first gear 3 Keep your driving smooth and consistent 4 When the fuel tank is nearly empty shut off the engine and refuel 1 Driving procedure Gently pull the throttle trigger to full throttle over a 3 second count hold for 2 more seconds and then gently apply the brake to stop Count the five seconds out while accelerating Repeat this starting and stopping procedure until the fifth tank of fuel is nearly empty 2 The model should now be shifting into second gear If it is not try turning the high spee
36. Tighten the wheel nuts especially on the left side Use the 8mm end of the included glow plug wrench After each running session Perform after run maintenance on the engine This clears the engine of destructive moisture and other corrosive deposits This is extremely important for the life of the engine Read on for after run maintenance procedures 2 Inspect the gears for wear broken teeth or debris lodged between the teeth Inspect the vehicle for obvious damage or wear Look for 1 Loose or missing screws 2 Cracked bent or damaged parts 3 Cut or loose wiring 4 Cut or kinked fuel lines 5 Signs of fuel leakage Other periodic maintenance Connecting rod The connecting rod should be replaced when the piston and sleeve are replaced Also replace the piston wrist pin and G clip whenever the connecting rod is replaced As with other internal engine components connecting rod life depends engine s usage and the quality and frequency of the engine maintenance Inspect the connecting rod after 3 gallons of fuel have been used lt Slipper clutch pads friction material Under normal use the friction material in the slipper clutch should wear very slowly If the thickness of any one of the slipper clutch pads is 1 8mm or less the friction disc should be replaced Measure the pad thickness using calipers or measuring against the diameter of the 1 5 and 2 0mm hex wrenches provided with the model lt
37. amber Adjustment The wheels can be set to have either positive or negative camber see illustration below The camber angle changes as the wheel moves up and down through its range of travel Static camber is the camber angle at the wheel when the vehicle is set at k its normal stationary ride height i The suspension pivot balls located in the axle carriers adjust the static camber The pivot balls are protected by blue dust plugs To adjust your static camber insert the supplied 2 5 mm hex wrench through the slit in the dust plug and engage the end of the pivot ball compressing the suspension until the arms are parallel to the ground will allow for easier hex wrench engagement The upper pivot ball is normally screwed all the way in Negative camber is achieved by screwing the pivot ball of the lower control arm out Note When camber is changed the toe angle of the wheel has to be reset Static Camber Base Factory Settings Front 2 degree negative camber each side Rear 2 degree negative camber each side Positive camber Negative camber Adjusting the Slipper Clutch Your Slayer is equipped with an adjustable Torque Control slipper clutch The slipper clutch is integrated into the main spur gear on the transmission The slipper clutch is adjusted by loosening the spring loaded locknut on the slipper shaft Use the supplied 8mm open end metric wrench To tighten or loosen the slipper nut insert the 2 0mm hex wrench
38. and down It can result in unstable and unpredictable handling Bump steer is affected by the position of the outer toe link end on the axle carrier From the factory the toe links are positioned so that bump steer is virtually eliminated about 3 100 of a degree through the entire range of travel When the caster angle is changed the outer toe link end should be repositioned on the axle carrier to maintain zero bump steer geometry Adjustment is achieved using the shims and hollow balls provided with the vehicle Refer to the Bump Steer Elimination chart on page 41 and look up your caster angle setting to find the correct position for the outer toe links Positioning the toe links correctly will maintain the original factory geometry and eliminate the unwanted steering angle changes caused by bump steer Roll Center F There are two holes on the a Mie Ol Atm bulkheads to mount each upper P Upper Mounting Holes suspension arm The roll center P of the vehicle can be raised by mounting the upper control arm in a the lower of the two holes This will Upper Control Arm r effectively increase the roll stiffness MMITIRTWAE TOIT YTA PE of the vehicle similar to installing m p swaybars Adding roll resistance to A one end of the vehicle willtendto A add traction to the opposite end For example increasing roll resistance in the rear by installing the upper arms in the lower holes will provide m
39. axxas part 3034 that includes a handy external charging jack is required 3 Reinstall the battery door and snap it closed 4 Turn on the transmitter and check the power indicator for a solid red light If the power indicator doesn t light red check the polarity of the batteries Check rechargeable batteries for a full charge The optional DC car adapter Part 43032 features a tangle free extra long wire and integrated fuse The long charging cord allows the model to remain outside the car while charging Caution Never charge batteries in an enclosed car interior or while driving Never leave charging batteries unattended Monitor them closely Traxxas integrated TRX Power System is the easiest way to add the power and economy of rechargeable batteries to your Slayer Consult your hobby dealer for purchasing information os SLAYER 11 D Spray a little window cleaner on the antenna wire to make it easier to push through the antenna tube Don t shorten the length of the antenna wire Its length is tuned to the frequency band cutting it could severely shorten the radio system s range Don t push the transmitter antenna down from the top Pull it down from the bottom one segment at a time to prevent binding and kinking the antenna mast os 12 e SLAYER THE TRAXXAS TQ RADIO SYSTEM 1 Locate the black antenna wire that exits the receiver Route the receiver antenna through the ra
40. before each charge Some high mAh battery packs 1500 mAh or higher require more than the standard 15 minutes of charge time If the battery pack is cold after 15 minutes of charging add another 5 minutes of charge time Closely monitor the battery pack and stop charging it when it begins to feel warm to the touch Never leave a battery charging unattended Always follow charger manufacturer s instructions Inexpensive overnight wall chargers may also be used os 24 e SLAYER THE TRX 3 3 RACING ENGINE The Traxxas EZ Start brings the convenience of push button electric engine starting to your Slayer The EZ Start consists of a hand held control unit and an on board motorized starter Power for the EZ Start system comes from a 7 2 volt rechargeable battery pack installed in the hand held control unit battery sold separately The engine glow plug is heated automatically by the EZ Start system eliminating the need to keep up with a separate glow plug igniter The voltage to the glow plug is kept constant regardless of the load placed on the starter by the starter motor The Glow Plug LED light emitting diode on the control unit indicates the condition of the glow plug The Motor LED indicates the status of the EZ Start electric starter motor The cush drive mechanism in the drive unit prevents damage to the gears caused by engine kickback Smart Start protection circuitry prevents damage to
41. celerates Rich A running condition where the engine is getting too much fuel for the available air It is better to run an engine slightly rich to increase engine life Excessively rich mixtures cause the engine to have sluggish performance with exaggerated blue smoke and unburned fuel coming from the exhaust rpm Abbreviation for revolutions per minute how many times the engine crankshaft spins in a minute Sleeve Internal engine part that contains the piston The precise fit between the sleeve and the piston creates a seal that allows engine to have the required compression for combustion The sleeve in a TRX engine is made of brass and is then hard chrome plated Slide carburetor The throttle on a slide carburetor closes and opens by sliding a barrel in and out of the carburetor body This type of carburetor is preferred for performance use because it provides a less restrictive straight through air path than the barrel carburetor design Stall When the engine stops running usually due to an incorrect fuel mixture setting or running out of fuel TDC Top dead center The top most position of the engine piston stroke Tuned pipe The tuned exhaust pipe usually consists of a specially shaped metal or composite chamber with baffles that is designed to enhance the power output of the engine Wear in Fitment process that occurs during engine break in where internal engine parts develop an even more precise matched fit t
42. cise fit between the piston and the sleeve creates a seal that allows the engine to have the required compression for combustion Port Ports are openings in the sleeve that allow atomized fuel to enter the combustion chamber and burned exhaust gases to exit The shape and location of the ports are a large factor in controlling the engine timing and power output Pre filter The outer air filter element in a two stage air filter This provides the first level of air filtration for the engine The majority THE TRX 3 3 RACING ENGINE of dirt and debris will be stopped by this filter Clean re oil and replace this filter after every hour of run time Always use both the pre filter and primary filter Primary filter The inner air filter element in a two stage air filter This provides a second level of air filtration after the pre filter removes the majority of dirt and debris Clean re oil and replace this filter after every 3 4 hours of run time Always use both the pre filter and primary filter Priming Manually causing fuel to move from the fuel tank up to the carburetor This is sometimes necessary after the engine has been sitting for a long period of time and all of the fuel has drained back to the tank On a Traxxas model this is done by holding your finger over the exhaust tip for one or two seconds while the engine is Starting Punch A term that refers to how quickly the model responds to throttle input or how quickly it ac
43. d needle clockwise 1 8 turn to lean the fuel mixture slightly and test for shifting 3 When the fuel tank is nearly empty shut off the engine and refuel Clean your air filter before you proceed Refer to the instructions on page 21 During the sixth tank of fuel the engine can be tuned for general performance use Proceed to the next section in this manual Off Apply throttle gradually On Apply throttle gradually On Reduce idle speed if necessary On Do not allow shifting to high gear On Accelerate over 3 second count hold for 2 seconds High Altitude Operation If you live in a high altitude region 5000 or more feet above sea level the lower air density may require you to lean your high speed fuel mixture slightly from the factory break in settings Try this if you are experiencing difficult starting or extremely sluggish engine performance at high altitude As you gain experience in the hobby you may discover that many people have differing opinions on what is the proper procedure to break in a model engine Only use the Traxxas break in procedure Other break in procedures could result in a weak damaged or otherwise poor performing engine The procedure outlined here was extensively tested and proven to yield better performing engines than other common break in methods Even if you have years of experience using model engines please do not ignore this caution SLAYER e 27 When tuning
44. d or NIMH NiCad or NiMH battery charger see page 20 sa s ne sss ee 7 2V battery pack Traxxas part 3030X shown After run oil to protect Small flat blade screwdriver Air filter oil Fuel dispensing bottle the engine from corrosion for tuning 1 8 inch blade Traxxas part 5263 Traxxas part 5001 SLAYER e 5 ANATOMY OF THE SLAYER TRX 3 3 Racing Engi Throttle Linkage to Hex Hub Axle Carrier see pg dodi ee Throttle Brake Servo below filter Pivot Ball Access Plug for two speed adjustment Exhaust Header Suspension Arm Roll Hoop Transmission Rocker Driveshaft Half Shaft Nerf Bar Push Rod Air Filter Body Mount Post EZ Start Skid Plate O Motor EZ Start Plug Bumper Chassis Brake Tension Adjuster Bulkhead Pipe Hanger under chassis pp Differential Fuel Cap Disc Brake under chassis Fuel Line Handle Oil Shock Damper Fuel Tank Antenna Mount On Off Switch Toe Link Turnbuckle Engine Shut off Clamp Receiver Box Fuel Cap Steering Servo Pressure Line Spring Pre load Adjuster 6 SLAYER M The following guide is an overview of the procedures for getting your Slayer running from opening the box to breaking in and tuning your engine Refer to the pages indicated for details on each step Look for the Quick Start logo on the bottom corners of Quick Start pages 1 Readthe safety precautions on page 4 For your own safety understa
45. d to compensate then a firmer spring should be used BASIC TUNING ADJUSTMENTS Adjusting the Pivot Ball Caps The pivot ball caps should be adjusted so that the pivot balls operate freely in the axle carriers with no excess play Use the provided four way suspension multi tool to tighten or loosen the pivot ball cap 5 Slowly move the piston up and down always keeping it submerged in oil to release the air bubbles Let the shock sit for a few minutes to allow any remaining air bubbles to surface 6 Slowly thread the upper cap with the installed shock bladder onto the shock body with the suspension multi tool The excess oil will bleed out of the small hole in the shock cap 7 Tighten the shock cap until snug Use the included steel shock wrench to hold onto shock body while tightening Shock Oil The 4 oil filled aluminum shocks dampers effectively control the Suspension movement by preventing the wheels and tires from continuing to bounce after rebounding from a bump Changing the oil in the shocks can vary the suspension damping effect Changing the oil to a higher viscosity oil will increase damping Lowering the viscosity of the oil will cause the suspension damping to be reduced Damping should be increased with higher viscosity oil if the model is bottoming easily over jumps Damping should be decreased with thinner viscosity oil if the model is hopping over small bumps and feels unstable The viscosity of shock
46. de engine overheating or the engine runs for a short time and then stalls particularly at high speed This is a dangerous condition that should be corrected immediately or it can ruin your engine Leaning the mixture Turning either the high speed and or low speed needle s clockwise to decrease the amount of fuel the engine receives Low speed needle LSN Needle valve that controls the fuel mixture at low throttle openings Needle valve Valve consisting of a tapered needle that closes against a corresponding seat to regulate fuel flow Nitro Abbreviation for nitromethane a component of model engine fuel that improves fuel combustion and power output Nitro also refers to a class of R C powered by model engines instead of electric Nitro content The amount of nitromethane used in the fuel Usually measured as a percentage of the total fuel volume Traxxas engines are optimized to use 10 20 nitro 33 nitro may be used for racing Nitromethane Nitromethane is a component in the fuel that increases power from the combustion process up to a point Engines are generally optimized to use a range of nitro content for the best power O ring Rubber O shaped ring used as a sealing gasket Pipe Abbreviation for the tuned exhaust pipe on a nitro engine See Tuned Pipe Piston The piston is the internal engine part that is attached to the upper end of the connecting rod and moves up and down in the cylinder sleeve The pre
47. dio box lid and then slide the antenna wire through the antenna tube 2 Securethe lid to the radio box with a body clip and then slide an antenna cap over the end of the antenna tube while leaving the antenna wire exposed 3 Insert the antenna tube into the mounting post Slide the crimp nut over the antenna tube and screw it onto the antenna post Use the supplied tool to tighten the crimp nut on the post just until the antenna tube is securely in place Do not over tighten Antenna Tube Antenna Wrench Antenna Nut THE TRAXXAS T RADIO SYSTEM Electronic Throttle Trim The electronic throttle trim located on the face of the transmitter P Wwhanithe engine is running adjusts the neutral center point of the throttle servo when the don t use the throttle trim on servo is at rest This control has been preset for you at the factory the transmitter to adjust the If necessary adjust the control so that the carburetor is at idle and engine idle speed Instead use the idle speed adjustment on the carburetor the brakes are not applied the model will roll freely Do not use the throttle trim to raise or lower the engine idle speed Make the idle speed adjustment on the carburetor Electronic Steering Trim Brake Reverse The electronic steering trim located on the face of the transmitter adjusts the neutral center point of the steering servos when the Neutral servos are at rest Adjust this control to make
48. e end White O Yellow 0 7 N mm 4 0 Ib in White O Orange 0 9 N mm 5 1 Ib in White O Tan 1 0 N mm 5 7 Ib in White Green 1 1 N mm 6 3 Ib in White O Silver 1 2 N mm 6 8 Ib in White O Gold 1 3 N mm 7 4 Ib in ee 1 4 N mm 8 0 Ib in Standard Front OO 1 6 N mm 9 1 Ib in Standard Rear e 1 8 N mm 10 3 Ib in ee 2 0 N mm 11 4 Ib in OO 2 3 N mm 13 1 Ib in e 2 6 N mm 14 8 Ib in 2 9 N mm 16 6 Ib in O 3 2 N mm 18 3 Ib in Ride Height Adjustment The rocker arm suspension uses push rods on each suspension arm Changing the length and or position of the push rod adjusts the ride height without affecting or compromising other suspension parameters For example you can raise the ride height of the rear suspension without changing up down travel distribution changing springs or affecting your progressive rate Increasing the rear ride height will increase ground clearance for rough terrain The rear ride height of the model can be changed by mounting the push rod in the inner hole in the lower rear suspension arm From the factory the rear push rod comes installed in the outer hole of the lower rear suspension arm s push rod mount If the push rod is mounted in the inner hole the ride height of the vehicle increases The ride height can be tuned by adjusting the sag of the suspension If suspension sag is severe and requires a large increase of the spring pre loa
49. ear eye protection when using compressed air or spray cleaners and lubricants SLAYER e 39 40 e SLAYER ADVANCED TUNING ADJUSTMENTS This advanced tuning guide will take you one step further into the cutting edge technology that has been designed into Slayer Follow the instructions provided here to take advantage of Slayer s maximum performance potential Caster Adjustment The caster angle of the front suspension may be used to adjust the understeer push oversteer handling characteristics of the model Generally increasing the caster angle will move the truck towards an oversteer condition more traction on the front tires less on the rear tires Decreasing the caster angle will create a tendency towards understeer pushing in the turns From the factory the front suspension is set to a caster angle of Ground plane 10 degrees The rear caster angle is not adjustable The caster angle of the front suspension can be Caster adjustment shims 2 front 2 rear lt D a In Front of Behind Hinge adjusted from 5 to 15 Adjust Caster Hinge Pin Boss Pin Boss the caster by positioning the 50 Noe or caster adjustment shims on the 7 5 One Three upper control arms of the front 10 0 Two Two suspension as shown in the m Three pm table to the right SENSE m News Caster Angle and Bump Steer Bump steer is unwanted change in the steering angle of the front wheels as the suspension travels up
50. eck for rapid The TQ Radio System was pre adjusted at the factory The adjustment operation of the throttle servo When the throttle trigger is pulled qu w should be checked before running the model in case of movement back the carburetor should open slide moves out When the ONERE nll during shipping Here s how throttle trigger is pushed all the way forward the brake should lock problems with your radio system or radio interference 1 Fully extend the chrome antenna mast on the transmitter and 7 Once adjustments are made turn off the receiver on your Slayer at your location turn the switch on The red indicator light on the transmitter followed by the hand held transmitter should be solid red not flashing 2 Turn on the receiver switch in the model The switch is located in Before each running session with your Slayer you should range test the top of the radio compartment your radio system to ensure that it operates properly 3 Position Slayer so that its front wheels are off the ground 1 Turn on the radio system and check its operation as described in the previous section Using the TO Radio System 4 Turn the steering wheel on the transmitter back and forth and check for rapid operation of the steering servo Also check that 2 Have a friend hold the model with the engine off the steering mechanism is not loose or binding If the steering operates slowly then check the receiver pack to make sure it is 3 Make sure your
51. ed Fuel is sold in quarts and gallons from hobby dealers The 1096 2096 and 3396 labeling refers to the percentage of nitromethane contained in the fuel Fuel mixture The ratio of fuel to air as determined by the needle settings of the carburetor Fuel tubing fuel line The thick silicone tubing that carries fuel from the fuel tank to the carburetor Glow plug The glow plug is located in the cylinder head at the top of the combustion chamber It contains an element that glows red hot when voltage is applied When the engine is being started the heat from the glow plug ignites the fuel mixture and starts the combustion process Glow plug driver This tool clips onto the glow plug and supplies the required voltage to light the glow plug element It is also called an igniter EZ Start equipped engines do not require this separate tool Header The aluminum tube that connects the exhaust system to the engine exhaust port The length and diameter of the header must be carefully selected to extract the most power from the engine High speed needle HSN Adjusts the carburetors fuel air mixture at high throttle openings Idle speed The speed rpm the engine runs at when the transmitter s throttle trigger is at neutral Idle speed screw ISS Located on the carburetor body This screw adjusts the idle rpm of the engine Lean A running condition where the engine is not getting enough fuel for the available air Symptoms inclu
52. eve fit on initial startup is desirable for those who want the best performing engine Make sure you are using a good quality battery pack that is fully charged new batteries usually require several charge cycles to reach peak voltage and full capacity This is especially important with a new engine that needs to be broken in If the engine sticks at TDC see page 39 for instructions on freeing the engine Shutting Off The Engine Turning off the switch for the radio will not shut off the engine To shut off the engine use the shut off clamp on the fuel line Squeeze the clamp closed to shut off the fuel supply to the engine Don t forget to release it when you restart the engine Avoid shutting off the engine by placing your finger over the exhaust outlet especially if you are through driving for the day This will leave more unburned fuel in the engine that could lead to harmful corrosion Always be careful not to touch the exhaust pipe after running it can become very hot THE TRX 3 3 RACING ENGINE When the EZ Start controller is in protection mode wait at least three minutes before attempting to start the engine to give the starter motor time to cool It s normal for your EZ Start controller to become warm after repeated use SLAYER E Z5 p See Important Points to Remember on page 4 for other precautions Never run your Slayer indoors Since the TRX 3 3 Racing Engine exhaust fumes are harmful always run
53. f Traxxas Specifications are subject to change without notice SLAYER 3 i All instructions and precautions outlined in this manual should be strictly followed to ensure safe operation of your model This model is not intended for use by children minors under 16 years of age without the supervision of a responsible and knowledgeable adult Skill Level Models require detailed setup and or maintenance procedures with required support equipment Previous experience with radio controlled models is mandatory These models are capable of very high speeds and require an even higher level of skilled driving control os 4 SLAYER SAFETY PRECAUTIONS All of us at Traxxas want you to safely enjoy your new Slayer Operate your Slayer sensibly and with care and it will be exciting safe and fun for you and those around you Failure to operate your Slayer in a safe and responsible manner may result in property damage and serious injury The precautions outlined in this manual should be strictly followed to help ensure safe operation You alone must see that the instructions are followed and the precautions are adhered to Slayer is very fast The Slayer is intended for experienced users with a high level of skill The TRX 3 3 Racing Engine is extremely powerful and may require skilled driving to maintain control Children under 16 years of age and inexperienced drivers should not operate the Slayer wit
54. for performance watch closely to notice when there is no longer any increase in speed or power when the high speed mixture is lean If you lean the high speed mixture to the point that the engine cuts out hesitates or stalls you are well into the danger zone and engine damage is likely Richen the high speed needle 1 4 turn and retune For your convenience the low speed needle has a positive stop that prevents it from being over tightened and damaging the needle and seat This also provides an easy way to gauge how many turns out from closed the low speed needle adjustment is set to THE TRX 3 3 RACING ENGINE Winter Break in Tips During the break in process the piston and sleeve wear into each other to form a precise fit The engine needs to heat up to a temperature around 200 to 215 degrees to allow the piston and sleeve to achieve this fit properly A precise fit between these two components is critical for proper compression and optimum performance If the engine runs too cold during break in the piston and sleeve will not expand to their appropriate sizes for break in and this can lead to premature wear of these components This wear may not become apparent until after winter has past and the engine is operated under warmer running conditions Warm the engine to approximately room temperature by removing all fuel and storing the vehicle inside at room temperature until just before starting the engine An extremel
55. for RX Pack or rechargeable receiver pack The RX pack is made up of five rechargeable NiMH battery cells and is used in place of the 4AA batteries in the model Channel The 27 MHz frequency band is divided into 6 channels so that up to six models can be operated simultaneously Each channel is referred to by its flag color and channel number as shown below CHANNEL FREQUENCY FLAG TRAXXAS BAND COLOR PART No 1 26 995 BROWN 2031 2 27 045 RED 2032 3 27 095 O RANGE 2033 4 27 145 YELLOW 2034 5 27 195 GREEN 2035 6 27 255 BLUE 2036 Clearing your frequency A routine verbal check to make sure nobody else in your area is operating on the same channel Always clear your frequency by calling out your channel number before operating your model Wait or move to another area if your channel is already being used Crystal X tal The plug in device that determines which channel the radio system will operate on For each channel there are two crystals one for the receiver and one for the transmitter Of those two crystals the one marked with the lower number 455 MHz lower must be inserted into the receiver Frequency band The radio frequency used by the transmitter to send signals to your model All Traxxas RTR models operate on a 27 MHz frequency band mAh Abbreviation for milliamp hour A measure of the capacity of the battery pack The higher the number the longer the battery will last between recharges Neutral posi
56. front and rear springs on Slayer have different spring rates The rear springs are about 12 stiffer than the front springs The Nest Compression 2 3 spring s pre load tension P AAA Ride Height y can be adjusted by t Sag Droop 1 3 turning the spring pre load adjuster Adjusting wA dd os x X H Axle Centerline at Ride Height the pre load changes the uj Axle Centerline at Max Sag suspension sag and ride RS height Suspension sag basically defines how much the suspension compresses when the truck is at rest Adjust the pre load so that the suspension compresses about one third of its full suspension travel see illustration If suspension sag is severe and requires a large increase of the spring pre load to compensate then a firmer spring should be used Axle Centerline at Max Compression Use a stiffer spring to reduce sag reduce body lean control brake dive and provide a firmer more responsive overall feel If Slayer is lightened significantly for racing applications softer springs will be necessary to allow the suspension to sag properly Heavier configurations will require stiffer springs The suspension sag and spring pre load should be readjusted anytime the springs are removed and or replaced Optional springs available from Traxxas are listed below Refer to your parts list for a complete part number listing Higher rate springs are stiffer Springs can be identified by dots of color on on
57. ft The main shaft of the engine that holds the reciprocating assembly Cooling fins The cooling fins are milled into the cylinder head and crankcase and cause heat to be drawn away from the engine Heat is removed when it dissipates into the air passing across the cooling fins It is important to keep the fins clean of dirt and debris for maximum cooling efficiency Cylinder head head The finned aluminum part on top of the engine that is responsible for dissipating most of the engine s heat The combustion chamber is machined into the bottom of the head Dyno Abbreviation for dynamometer A precise piece of testing equipment that accurately measures engine power and torque output over the engine s entire rpm range EZ Start Traxxas on board electric starting system The system consists of a hand held starter control unit and an on board gearbox with an electric motor to spin the engine Fit Usually refers to the fit of the piston and sleeve If the fit is tight the piston will feel very tight at top of the sleeve top dead center and the engine will have good sealing and compression If the fit is loose compression will be low and both the piston and sleeve should be replaced Flame out Occurs when the engine stops running at high rpm Usually the fault of an excessively lean fuel mixture or glow plug failure Fuel 1096 2096 3396 The TRX 3 3 must have model engine fuel to run Traxxas Top Fuel Power Plus is recommend
58. he bench for several tanks of fuel or simply running the engine with a very rich fuel mixture for the first 4 tanks of fuel will not achieve the best results Follow the easy steps in this manual Dirt is the worst enemy to your engine A clean air filter is absolutely critical for long engine life Due to the high performance nature of the TRX 3 3 engine a tremendous amount of vacuum is created to move a large volume of high velocity air through the carburetor This model is equipped with a two stage high performance air filter which requires that the pre filter stage be cleaned and oiled every hour of operation and the primary filter be cleaned and oiled every 3 4 hours An extra pre lubed air filter set has been provided with this model to encourage you to maintain the engine s air filter PBELLLLLLAALA ii BEBE k Ia F i Perform after run maintenance on the engine to prevent corrosion from building up on the internal engine components The fuel naturally attracts moisture and corrosion can build up very quickly inside the engine if it is not prevented A few minutes spent before and after each time you run your model will allow you to enjoy it for a long time to come Read on for more exciting details about your new engine THE TRX 3 3 RACING ENGINE CT il Glow Plug Slayer s fuel tank is Two Stage equipped with a built in Head Protector sintered bronze fuel filter PowerTune Head Cylinder Head
59. hout the supervision of a responsible and knowledgeable experienced adult ne Tue er IQ Always follow all directions and precautions printed on the fuel container Model engine fuel is poisonous to humans and animals Drinking the fuel can cause blindness and death Handle with care and respect Model engine fuel especially when in a fuel dispensing bottle may look like a cool drink to a child K all fuel f the reach of E Idren SS 3 TU Or ll Model engine fuel is flammable Never allow smoking sparks heat or flame in the presence of fuel or fuel vapors The engine brakes and exhaust system may become extremely hot during use Be careful not to touch the parts especially when refueling or stopping the engine Prolonged exposure to the engine exhaust can be harmful Avoid breathing the engine exhaust Always run your Slayer outdoors in a well ventilated area Never run the engine indoors Do not operate your Slayer at night or anytime your line of sight to the model may be obstructed or impaired in any way Never operate your Slayer in crowds of people or busy pedestrian areas Slayer is very fast and could cause injury to those unaware of its presence Keep small children at a safe distance away from the operating area C Because Slayer is controlled by radio it is subject to radio interference from many sources beyond your control Since radio interference can
60. hrough actual use under controlled circumstances WOT Abbreviation for wide open throttle SLAYER e 19 DANGER Model engine fuel is poisonous to humans and animals Drinking the fuel can cause blindness and death Handle with care and respect Keep it out of reach of small children at all times While driving do not leave your fuel dispensing bottle on the ground where a child could have access to it Follow fuel label warnings 20 SLAYER THE TRX 3 3 RACING ENGINE Use the Right Fuel It s imperative that you use the correct fuel in your TRX 3 3 Racing Engine for maximum performance and engine life Traxxas Top Fuel Power Plus should be used to ensure correct engine lubrication performance and ease of tuning 2 Top Fuel is the only fuel which is 10096 certified for use in Traxxas engines Traxxas Top Fuel is made with just the right balance of natural and synthetic lubricants to allow excellent throttle response and the best top end performance without sacrificing long term durability You may use 10 20 or 33 nitro content fuel Try to use the same percentage all the time avoid switching back and forth between fuels We recommend that if you break in your engine on 20 fuel that you stick with that percentage If you do move to a higher or lower percentage make sure you readjust your fuel mixture to compensate see below Choosing a Nitro Percentage A commonly asked question is what is
61. ion You may have to pinch the fuel line closed for several seconds before the engine stops 2 Completely empty the fuel tank Use your fuel dispensing bottle to suck out the old fuel Do not mix the old fuel with your fresh fuel supply If you leave fuel in the tank transporting or handling your Slayer may cause fuel to run into the engine 10 With the fuel tank empty and the throttle at the idle position try to start the engine The engine will most likely start and run for a few seconds as it uses up any fuel remaining in the engine and fuel lines Once the engine stops clean the outside of the engine with compressed air or spray motor cleaner Once the engine is clean and dry remove the glow plug power wire glow plug and air filter Open the throttle fully and spray a one second burst of WD 40 into the carburetor and into the glow plug hole Caution Wear safety glasses to prevent spray from getting into your eyes If you are using after run oil follow the manufacturer s instructions Place a rag or paper towel over the engine to catch any WD 40 or after run oil that may come out the carburetor or glow plug hole Connect the EZ Start controller to the model and spin the engine for 10 seconds Remove the rag or paper towel and repeat steps 5 7 two more times Clean and re oil the air filter so it will be ready for use next time See page 21 for air filter maintenance instructions Replace the glow plug reconnect the gl
62. is nearly empty 3 Look for thick blue smoke exiting the exhaust outlet If there is no smoke richen the high speed needle 1 4 turn by turning the needle counterclockwise 4 When the fuel tank is nearly empty shut off the engine by pinching the fuel line connected to the carburetor use the installed clamp 5 Let the engine cool for 15 minutes Note If at any point the engine cuts out or stalls during gentle acceleration richen the high speed needle 1 4 turn by turning the needle counterclockwise 1 From tank 2 forward Slayer should be driven with the body on 2 Driving procedure Gently pull the throttle trigger to 1 2 throttle over a 2 second count Then gently apply the brake to stop Count the two seconds out while accelerating one thousand one one thousand two and then stop Repeat this starting and stopping procedure until the second tank of fuel is nearly empty 3 When the fuel tank is nearly empty shut off the engine and let it cool for 15 minutes 1 Driving procedure Gently pull the throttle trigger to 1 2 throttle over a 3 second count Then gently apply the brake to stop Count the three seconds out while accelerating one thousand one one thousand two one thousand three and then stop Repeat this starting and stopping procedure until the third tank of fuel is nearly empty 1 1 4 2 seconds 15 minutes 2 1 2 2 seconds 15 minutes 3 1 2 3 seconds 4 Full 3 seconds 5 Full 5 seconds THE T
63. justment screw Always use the idle speed adjusting screw to control engine idle Do not use the throttle trim on the transmitter to adjust idle speed The idle speed should be set as low as possible and still maintain reliable running p Hu See Tuning Your TRX 3 3 Racing Engine on page 28 for complete information on adjusting the air fuel mixture and idle speed Factory Needle Settings Ifyour factory preset carburetor adjustments have been tampered with use the following settings e Set the high speed needle to 4 turns out from closed e Set the low speed needle so the screw head red in Fig A is flush even with the end of the slide yellow in Fig A Low Speed Needle Adjustment Always use the factory settings for initial starting Only use these settings when the factory settings have been lost Higher nitro requires a richer fuel mixture When running 33 fuel richen your high speed needle 3 4 turn if previously running 20 nitro and then re tune the engine for maximum performance SLAYER 23 Use the Right Charger The most convenient type of charger is an AC peak detecting charger that plugs directly into an AC wall outlet such as the TRX Power Charger see page 11 for more info It contains special peak detection circuitry that automatically shuts the charger off when the battery is fully charged If you re using a 15 minute timed charger always fully discharge the battery pack
64. l or other lubricants into the transmission through the two speed adjustment access 8 Check performance by running a test lap after each adjustment On a small race track with many tight turns try setting the shift point later so that the truck only shifts into second gear on the main straightaway This will prevent an unexpected shift in the middle of a turn On larger tracks it may be necessary to allow earlier shifts for increased speed SLAYER e 35 For adjusting two speed and gear ratios see Advanced Tuning Adjustments on page 43 36 SLAYER BASIC TUNING ADJUSTMENTS Adjusting the Spur Gear Clutch Bell Gear Mesh The ideal spur gear clutch bell gear mesh for Slayer is 0 1mm To set the gear mesh place a strip of standard letter A4 size copy or printer paper about 0 1mm thick between the mating teeth Loosen the two horizontal engine mount screws and slide the engine mount up to push the clutch bell gear against the spur gear so that the that the paper is not too tight to pull out or too loose that it will fall out Tighten the two horizontal engine mount screws securely When the paper is removed you should feel only the slightest amount of play between the gears almost none and there should be no binding or friction Changing the Spur Gear 1 Remove the four cap head screws that secure the engine to the engine mount 2 Remove the button head screw that secures the pipe hanger to the rear body mount
65. lipper nut or you could damage the slipper bearings pressure plates or other components BASIC TUNING ADJUSTMENTS Adjusting the Two Speed Transmission Slayer comes equipped with an adjustable two speed transmission When the shift point on the transmission is adjusted correctly it will maximize acceleration and improve drivability Use a 2mm hex wrench to adjust the shift point To make the adjustment the engine must be off not running 1 Shift the transmission into forward gear shift button down 2 Remove the rubber access plug from the top of the transmission housing 3 While looking through the opening rotate the spur gear to align the cutout notch on the internal two speed clutch drum with the opening 4 Hold the spur gear and slowly roll the truck forward until the hex on the black adjustment set screw becomes visible in the opening Note the truck will only roll forward not backwards when the spur gear is held stationary 5 Insert the 2 0mm hex wrench through the clutch drum and into the adjustment screw 6 Turn the adjustment screw 1 8 turn counter clockwise to lower the shift point shifts sooner Be careful not to loosen the adjustment screw too much or you may cause the screw and spring to fall out requiring major disassembly and repair Turn the adjustment screw clockwise for later shifts 7 Reinstall the rubber access plug to prevent dirt from entering the transmission Do not put oi
66. llowing components 1 A rubber filter Base 2 A 3 piece plastic housing 3 A pre filter element 4 A primary filter element i The primary filter element inside must be cleaned after 3 4 hours of run time These intervals include the break in time Clean your air filter after break in Dust which is often too fine to see and dirt constantly move through the filter anytime the engine is running Even if you can t see dirt on the filter it is present inside the foam after any amount of run time If you exceed the recommended cleaning intervals your engine will be damaged Engine damage or wear due to dirt ingestion is easy to detect and one of the top causes of premature engine failure Pre Filter Cleaning Instructions every hour of run time 1 Remove the clip from the air filter and remove from the metal hanger Remove the air filter assembly from the carburetor bore by pulling the entire filter assembly firmly to the side to release it Do not pull straight up THE TRX 3 3 RACING ENGINE 2 Remove the pre filter element 3 Clean the pre filter element by thoroughly washing the foam element in hot soapy water dishwashing detergent works well Repeat twice 4 Thoroughly dry the pre filter element with a clean towel 5 Oil the foam element with air filter oil Use Traxxas filter oil partt 5263 or a high quality special purpose foam filter oil like what is used for off road motorcycle and ATV engines This
67. mitter THE TRAXXAS T RADIO SYSTEM 3 3 Your TQ transmitter uses 8 AA batteries The battery compartment is The radio receiver in your model uses 4 AA batteries d located in the base of the transmitter The battery holder for the receiver batteries is located underneath the battery cover The battery cover can be identified by the on off switch Use the Right Batteries Your transmitter uses AA batteries Use new alkaline batteries or rechargeable batteries such as NiCad or NiMH Nickel Metal Hydride batteries in your transmitter Make sure rechargeable batteries are fully charged according to the manufacturer s instructions 1 Access the battery compartment by removing the 4x12mm and 4x20mm buttonhead cap screws from the chassis Swing out the nerf bar just far enough to clear the battery compartment cover 2 Remove the battery holder and install 4 AA alkaline batteries Make careful note of the battery polarity by comparing against the diagrams in the battery holder Press in tab aaah pey If you use rechargeable batteries in your 3 Insert the battery holder into the battery compartment transmitter be aware that when they begin to lose their charge they lose To prevent losing control of your model it is important to stop at the first power much more quickly than 1 Remove the battery compartment door by pressing the tab and sign of weak receiver batteries to avoid losing control Visible warning
68. nd where carelessness and misuse could lead to personal injury L 2 Charge the EZ Start battery pack See page 24 The EZ Start requires a fully charged 7 2 volt battery pack sold separately L 3 Install the receiver batteries See page 11 Slayer requires 4 AA alkaline or rechargeable batteries for the receiver sold separately L 4 Install the antenna See page 12 Use the antenna nut wrench to install the antenna mast in Slayer L 5 Decal and Install the body See page 8 You will need to use the body during break in so it s best to apply any additional decals before you use the body L 6 Install batteries in the transmitter See page 11 Slayer requires 8 AA alkaline or rechargeable batteries for the transmitter sold separately L 7 Install the EZ Start battery See page 24 Install and connect a charged 7 2 volt battery pack in the EZ Start controller 8 Turn on the radio system See page 14 Make a habit of turning the transmitter on first and off last 9 Check servo operation See page 15 Make sure the throttle shifting and steering servos are working correctly L 10 Range test the radio system See page 15 Follow this procedure to make sure your radio system works properly at a distance and that there is no interference from outside sources L 11 Fill the fuel tank See page 21 Use your fuel dispensing bottle to fill the tank 12 Connect the EZ Start to the model
69. ng the clutch bell on the engine and or the spur gear slipper clutch gear on the transmission From the factory Slayer is equipped with a 15 tooth clutch bell and a 36 tooth spur gear This combination will provide a good balance of acceleration and top speed Optional spur gears and clutch bell gears are listed on your parts list Refer to the chart on page 43 for possible gearing combinations Adjusting the Two Speed Ratios Slayer is equipped to allow adjustment to the two speed by installing optional close and wide ratio gearsets This requires transmission removal and disassembly see Traxxas com for detailed instructions The close ratio gearsets will reduce top speed slightly but will provide more powerful acceleration by reducing engine rpm loss when shifting from 1st gear to 2nd gear The wide ratio gear set is installed in the Slayer The additional horsepower and torque output of the TRX 3 3 engine provides seamless shifting even with the larger gap between first and second gears The following gear ratio chart shows the available combinations with optional spur gears clutch bells and two speed gear sets ADVANCED TUNING ADJUSTMENTS the differentials Changing to a higher viscosity oil in the differential will reduce the tendency for engine power to be transferred to the wheel Use higher viscosity thicker oil for Gear Ratio Chart with the least traction You may notice this when making sharp turns More p
70. ngine piston stroke Break in Break in is the procedure for running a brand new engine according to specific instructions This correctly prepares the engine for normal running The break in procedure can be different for different makes of engines Follow the Traxxas directions for break in exactly Carb Abbreviation for carburetor Carburetor The carburetor atomizes mixes the fuel with the air so that the engine can burn it There are two types of carburetors slide carbs and barrel carbs The TRX 3 3 uses the superior slide carburetor design Clean out Cleaning out is a condition that occurs when the engine is accelerating and the fuel mixture becomes sufficiently lean to allow the engine to continue into its upper rpm power band It is usually characterized by a noticeable decrease in blue exhaust smoke and a dramatic increase in engine speed Combustion chamber The combustion chamber is machined into the bottom of the cylinder head This is where the glow plug ignites the fuel The shape of the combustion chamber is designed to promote more efficient burning of the fuel Connecting rod The connecting rod transfers the piston motion to the crankshaft The TRX 3 3 Racing Engine uses a knife edged connecting rod The aerodynamic sharpened edges allow it to slice through the pressurized air fuel mixture inside the crankcase Crankcase The engine s body that contains all of the running mechanical components Cranksha
71. ny signs of overheating Richen the fuel mixture slightly to provide a safety margin of additional cooling lubrication Symptoms of overheating include Steam or smoke coming from the engine not exhaust Hesitation or stalling during acceleration Popping or clattering sound when decelerating detonation Fluctuating idle speed w Your TRX 3 3 Racing Engine is broken in the fuel mixture is balanced and the idle is set now it s time to have some fun Before you go on here are some important precautions to keep in mind C Don t run your Slayer in water mud snow or wet grass It s tempting but water and mud are easily drawn through the air filter and will severely damage the engine Small amounts of moisture can cause electronics to fail and loss of control over your Slayer The TRX 3 3 Racing Engine is extremely powerful Remember to apply the throttle gradually to prevent wheelies or loss of control Don t hold Slayer off the ground and rev the engine excessively with no load on the engine This practice could result in internal engine damage Avoid over revving the engine when Slayer is airborne after a jump Avoid excessive high speed running for extended periods of time or over long distances This could cause the engine to build up enough speed to exceed maximum safe RPM limits Don t drive your Slayer with drive train damage of any kind The engine could be damaged
72. ore traction for the front wheels and potentially more steering Installing the upper arms in the lower holes on the front and rear will increase overall roll resistance without changing the handling balance The arms are installed in the upper position from the factory to make the truck easier and more forgiving to drive and less likely to traction roll in turns The lower holes should be reserved for track tuning Note When the upper suspension arms are moved to the lower holes the front outer toe link ends and the rear toe control links should be repositioned to eliminate bump steer Refer to the Bump Steer Elimination chart on page 41 and look up your suspension combination caster angle and roll center position to find the correct position for the front outer toe links and the rear toe control links Adjustment is achieved using the shims and hollow balls provided with the vehicle Rockers Progressive Rate Suspension Travel One of the most exciting aspects of Slayer s suspension is the inboard shock damper arrangement that uses pivoting rockers to translate vertical wheel travel into linear shock motion The rockers can be changed to increase the progressive rate of the suspension The progressive rate determines how much the force at the wheel produced by the springs being compressed wheel force will vary with suspension travel or vertical travel of the wheel On a progressive suspension arrangement the wheel force will increase
73. ow plug power wire and reinstall the air filter Clearing a Flooded Engine If the engine is primed for too long during startup then it can become flooded with fuel When the engine is flooded it will no longer turn due to excess fuel in the combustion chamber preventing upward movement of the piston Use the following procedure to clear a flooded engine 1 Remove the blue glow plug wire Remove the glow plug and gasket with the glow plug wrench supplied with your model A 5 16 or 8mm nut driver will also work Turn the model upside down and plug in the EZ Start controller 4 Push the EZ Start button for several seconds to clear the engine CON OO Ui of excess fuel Do not look into the glow plug hole while the engine is spinning or you could spray fuel into your face Turn the model over and reinstall the glow plug and gasket Reconnect the blue glow plug wire to the glow plug Reconnect the EZ Start controller Do not prime the engine Pull the throttle to 1 2 throttle and push the EZ Start button The engine should start immediately MPN eS ee ee a SLAYER Piston stuck at top dead center TDC Top dead center is the position where the piston is at the very top of the tapered sleeve Occasionally an engine can get stuck at this position This is most likely to happen on new engines during break in but can also happen at other times If the engine is stuck at TDC use the following procedu
74. ower to the wheels I BEC on slick surfaces The unloaded wheels on the inside of the turn have with the most traction r a a AG the least traction and tend to spin up to extremely high rpms Higher Racing on low traction 17T 37T ist 1687 1781 1875 viscosity thicker oil causes the differential to act like a limited slip ees n Tm e better perrormance Tor Standard 2nd 11 70 12 35 13 00 differential distributing more equal power to the left and right wheels qe eerie LM decr x d ioa ii Slayer will generally benefit from higher viscosity oil when climbing rock 18T 38T m i687 1781 3875 crawling or racing on low traction surfaces Note Heavier oil will allow Wide 2nd 1077 1137 11 97 power to be transferred even with one or more tires off the ground This Using lower viscosity W oss can make the vehicle more likely to overturn irae lies 2nd gear sets Gear 36 38 40 From the factory both the differentials are filled with SAE 30 000W More power to the wheels CORDE Ist 15 75 16 62 717 50 viscosity silicone oil Only use silicone oil in the differentials Traxxas with least traction TET AGT oes TET eco 1720 sells SAE 10 000W and SAE 50 000W viscosity oil see your parts list The Racing on low traction Close 2nd 11 90 12 56 1322 differentials have to be removed from the vehicle and disassembled to rough surfaces 18T 38T 1st 16 62 17 50 change replace oil Wide 2nd 10 61 11 17 lut of Spur Gear Teeth 2nd gear sets Gear 36 3
75. performance improvement 2 The engine begins to cut out at high speed Danger 3 There is a sudden loss of power during acceleration Danger 4 The engine begins to overheat Symptoms of overheating include Steam or smoke coming from the engine not exhaust Hesitation or stalling during acceleration Popping or clattering sound when decelerating detonation Fluctuating idle speed Temperature measurement above 270 F at the glow plug A temperature reading above 270 alone does not necessarily indicate overheating Look for other symptoms of overheating combined with temperature for a more accurate warning Richen the fuel mixture to the optimum setting by richening the high speed needle at least 1 8 turn counterclockwise and retest This setting will extend engine component life Low Speed Fuel Mixture Adjustment The low speed mixture is always set after the high speed needle is correctly adjusted The low speed mixture is set using the pinch test 1 Once the engine is warm do several high speed runs to confirm that the high speed needle is set correctly THE TRX 3 3 RACING ENGINE 2 Bring the vehicle in and pinch closed the fuel line going into the carburetor use the engine shut off clamp The engine should run for 2 3 seconds speed up and then shut off 3 If the engine runs longer than 3 seconds then lean the low speed needle 1 16 turn make several more high speed runs and retest 4
76. r arms on wheel force as the suspension is compressed On the progressive rate wheel force is light at first and increases as the suspension is compressed 20 Progressive Rate Travel Wheel Force 10 20 30 40 50 60 70 8 90 Wheel Travel ADVANGED TUNING ADJUSTMENTS Bump Steer Elimination Chart The illustrations and the following table detail the position of the outer toe link end for various caster and roll center settings to eliminate bump steer The shims and the hollow balls used to adjust bump steer are provided with your vehicle FRONT Control Arm Caster Mounting Hole on Outer Toe LinkEnd Setup 5 7 5 10 12 5 15 Front Bulkhead Standard z Hollow Ball Thin Shim Standard Hollow Ball Thick Shim 7 Tall Center Hollow Ball Thick Shim _ Standard Hollow Ball Thin Shim Standard Hollow Ball 4 REAR When the rear upper control arms are mounted in the lower of its two mounting holes in the bulkhead roll center the tall hollow ball should be used as shown a C Upper C Lower C Upper C E Lower E Upper Lower a Upper E Lower Control Arm Outer Toe Link Mounting Hole on End Setup Rear Bulkhead Tall Center Hollow Ball Upper stock Tall Upper Hollow Ball Lower SLAYER e 41 Shock Piston Hole Sizes 1 4mm 1 3mm Sold Separately Stock Front amp Rear Never slide the threads on the shock rod
77. r friends with your new Slayer You must wait until the engine is fully broken in before attempting sustained high speed running Patience and careful attention during break in will reward you with the best performing TRX 3 3 Racing Engine possible During break in your engine may appear to malfunction with symptoms like stalling inconsistent performance and fouled glow plugs These are simply the normal break in pains engines sometimes go through They will disappear once your engine is fully broken in Many owners report not experiencing any of these symptoms with TRX Racing Engines We recommend to go ahead and replace the glow plug with a new one after the engine break in procedure Engine Break in Procedure The focus during break in is to vary and limit the engine speed This will be accomplished by accelerating and stopping at different rates for the first 5 tanks of fuel As the engine begins to break in the duration and intensity of the acceleration will gradually increase Sustained high speed running is not permitted until the 6th tank of fuel Perform the initial break in on a large flat paved surface Slayer is very fast and by tanks 4 and 5 you will need plenty of room for the truck to run in Apply all throttle and braking actions gently Abrupt acceleration or braking could cause the engine to stall unnecessarily Special break in fuels are not recommended Use the same fuel you plan to use everyday f possible
78. r on the road but it s very important that you take some time to read through the Owners Manual This manual contains all the necessary set up break in tuning and operating procedures that allow you to unlock the incredible performance and adjustment potential that Traxxas engineers designed into Slayer Even if you are an experienced R C enthusiast it s important to read and follow the procedures in this manual Slayer contains new technologies in the engine suspension and transmission operation that you may not be familiar with Pay particular attention to the fuel and break in requirements for the engine advanced de e TF Traxxas Support Traxxas support is with you every step of the way Refer to the next page to find out how to contact us and what your support options are Quick Start This manual is designed with a Quick Start path that outlines the necessary procedures to get your model up and running in the shortest time possible If you are an experienced R C enthusiast you will find it helpful and fast Be sure and read through the rest of the manual to learn about important safety maintenance and adjustment procedures Turn to page 7 to begin Slayer is made to be a complete package that starts with the highest level of engineering a professionally produced DVD to acquaint you with the starting racing and maintenance procedures and is equipped stock with the most powerful Ready To Race engine available We want
79. ral guidelines on how weather conditions affect air density when they move higher or lower than your baseline setting see page 22 for detailed info on how air density affects mixture settings Tuning the Engine by Temperature The following procedures require an optional infrared temperature probe or on board temperature gauge Traxxas on board digital temperature gauge part 4091 Engine temperature can be used as an effective tuning aid when you understand the relationship between engine temperature and ambient temperature The engine operating temperature when tuned for maximum performance will vary according to atmospheric conditions engine load gauge accuracy and many other factors The atmospheric condition that has the most influence on engine temperature is air temperature Expect the engine temperature to vary almost in direct proportion to air temperature Assuming you tuned the engine for the same maximum performance each day the engine will run about twenty degrees hotter when it s ninety degrees outside than it would in seventy degree weather For this reason we cannot give you a definitive temperature range that indicates the best possible engine tuning There is NO optimal temperature that can be used as a target to deliver the best engine tuning Do not rely on a temp gauge alone to tune your engine Tune the engine by paying very close attention to how it responds to changes in fuel mixture more smoke less smoke
80. re to release the piston from the sleeve 1 Remove the glow plug using the included tool or 8mm 5 16 nut driver and verify that the piston is at the top of its stroke 2 Turn the Slayer over and locate the flywheel through the cutout in the chassis Insert a flat blade screwdriver as shown between the chassis and flywheel Using the chassis for leverage rotate the flywheel counterclockwise by pressing down on the screwdriver The flywheel will turn unsticking the piston from the sleeve Top Dead Center 3 Put two or three drops of light machine oil into the glow plug hole to lubricate the piston and sleeve Do not use too much oil It will hydro lock the engine Verify the starter will spin the engine with the glow plug out 4 Rotate the flywheel so the piston is at bottom dead center and replace the glow plug with gasket Reconnect the blue glow plug wire 5 You should now be able to start the engine with the EZ Start Bottom Dead Center Q Denatured alcohol available from home centers and paint supply stores in a spray bottle is an extremely effective cleaner Be sure to wear safety glasses and gloves when working with denatured alcohol Be sure to follow proper maintenance and storage procedures to avoid damage to your engine and other components of your Slayer Don t put the fuel from your tank back into your fuel jug Dispose of it properly following city or county regulations Always w
81. regular alkaline batteries lifting the door up signals include sluggish steering response and shortened radio range 4 Reinstall the battery cover and secure with the screws Caution Discontinue running your Slayer at the first sign of weak batteries flashing red light to avoid losing control 2 Install the batteries in the correct orientation as indicated in the Traxxas TRX Power System optional battery compartment The optional Traxxas TRX Power System can be purchased separately to power the radio system in the Slayer Benefits include the economy of a rechargeable 5 cell nickel metal hydride NiMH battery pack that replaces AA alkaline batteries and increased voltage for dramatically improved servo performance The TRX Power Charger Part 3030X m is a peak detecting unit that will charge the RX Power If the power indicator light flashes then the transmitter batteries are Pack Part 3036 flat pack or 3037 hump pack in about one hour The peak weak discharged or possibly installed incorrectly Replace with new or detection circuitry automatically shuts off the charger when the maximum freshly charged batteries The power indicator light does not indicate charge has been achieved The TRX Power Charger also includes a 7 2V adapter the charge level of the RX Power Pack installed in the model for charging 7 2V EZ Start batteries The TRX Power Charger can operate on either AC or DC power A special wiring harness for Slayer Tr
82. ritical engine components such as the crankcase crankshaft and engine bearings are made to extremely high quality standards and should under normal circumstances outlast multiple sets of pistons sleeves connecting rods and wrist pins reciprocating assemblies It could be more economical for you to continue to use your good bearings and crankshafts and simply replace the reciprocating assembly as needed Engine assembly is not difficult and replacing the reciprocating assembly does not require any special tools or skills a 38 SLAYER MAINTAINING AND STORING YOUR Your Slayer requires timely maintenance in order to stay in top running condition Neglecting the maintenance could allow dirt deposits and moisture to build up inside the engine leading to internal engine failure The following procedures should be taken very seriously After each hour of running Clean and re oil the air filter The instructions for this procedure are on page 21 We cannot stress enough the value of cleaning your air filter at the scheduled intervals The cleanliness and condition of your air filter directly influences the running life span of your engine Clean the outside of the engine of accumulated dirt oil and grime Accumulated grime will decrease the engine s ability to cool itself To maintain optimum radio system performance the RX Power Pack receiver battery should be recharged after each hour of runtime
83. sepower while still maintaining the TRX Racing Engine characteristics of broad linear power delivery and ease of tuning Focused engineering and rigorous testing have yielded unprecedented power and uncompromising performance that turns ready to run into Ready To Race The TRX 3 3 Racing Engine takes a total system approach Each part of the engine from the air filter to the exhaust tip is carefully engineered to work in harmony with other engine components Each part complements the next to extract maximum power The TRX 3 3 Racing Engine is designed to be tolerant of variations in tuning and to run successfully through a wide range of variable atmospheric conditions such as changes in temperature humidity and altitude In order to get the longest engine life and keep the TRX 3 3 Racing Engine in top running condition it is very important to perform regular routine maintenance The number one cause of premature engine wear and failure is lack of care and maintenance The TRX 3 3 Racing Engine is manufactured to exacting tolerances and requires a specially designed break in procedure to accomplish the final precision fitting of the internal engine components It is very important that you follow the new break in procedure as closely as possible to achieve the best performance and longest life from your TRX 3 3 Racing Engine Engine break in will take between one and two hours Old style break in procedures such as idling the engine on t
84. ter bond DECORATING YOUR MODEL The factory tires on your Slayer are already glued to the rims The tires must be glued to the rims to prevent the rims from spinning inside the tires The instructions here are provided to show you how to glue replacement tires to the rims in the future Use CA tire glue available from your local hobby dealer You can glue the tires without removing the wheels from the truck For clarity these instructions show the process with the wheels removed 1 Remove a wheel from Slayer using the larger 8mm end of the glow plug universal wrench 2 Use your thumb to push the side of the tire away from the rim Place one or two drops of CA glue into the opening and release the tire Capillary action will draw the glue around the bead of the tire 3 Repeat step two at four or five points around the rim until the tire is completely secured to the rim Turn the rim over and repeat the process for the inside of the rim tire Repeat for the other 3 wheels 4 Reinstall the wheels The main decals have already been applied to your Slayer The extra decals provided are die cut for easy removal Use a hobby knife to lift the corner of a decal and remove it from the backing Carefully position the decal over the desired location and press one side on the body Pull the decal tight and use a finger to gradually smooth out any air bubbles as you apply the decal Look at the photos on the box for t
85. the difference between 10 20 and 33 fuels Increasing the nitro in the fuel is almost like adding extra oxygen to the combustion process It burns more efficiently improves combustion and delivers more power When increased nitro is used more of the other fuel components are then required inside the combustion chamber to maintain the perfect air fuel ratio Therefore overall fuel mixtures need to be richened slightly on the high speed needle about 3 4 of a turn counterclockwise when changing from 20 to 33 about 1 2 of a turn counterclockwise when changing from 10 to 20 This allows greater fuel flow through the engine and promotes cooler running even at the maximum lean settings If 33 improves power then it seems that the highest nitro content available beyond 33 should always be used in the engine In reality there are practical limitations Engines are designed to run best within a range of nitro percentages How the engine is ported the size of the combustion chamber and other factors determine how much nitro can be efficiently used in the engine The TRX 3 3 Racing Engine responds exceptionally well to a maximum of 33 nitro returning cooler temps more power and a smoother throttle response For those who want to run higher nitro 33 Top Fuel is the optimum nitro percentage for the TRX 3 3 Racing Engine Increasing the nitro beyond 33 can introduce the need for engine modifications ports head shimming etc
86. the engine Never turn the radio system off while the engine is running The on off switch in the model only turns the receiver Remember always turn the Each time you prepare to run your Slayer TQ transmitter on first and you must clear your frequency to be sure off lastto avoid damage to no one else in the area is using the same your Slayer Never turn the h Channel 2 on and off It does not turn off the engine radio off while the engine M AL Red is running Channel 3 Always use new or freshly charged batteries for the transmitter and There are six possible channels Orange I RC make sure the receiver batteries are fresh Weak batteries will limit numbered 1 through 6 Each is EO Channel 4 p the radio signal between the receiver and the transmitter Loss of represented by a color Look at the Yellow uu I the radio signal can cause you to lose control of your Slayer crystal plugged into the back of your Channel 5 transmitter to determine which channel Green your truck is assigned to Channel 6 Blue Always turn your TQ transmitter on first and off last This procedure will help to prevent your Slayer from receiving stray signals from another transmitter or other source and running out of control Always turn your Always turn your Then start your engine transmitter on first receiver on second a 14 ee SLAYER THE TRAXXAS TQ RADIO SYSTEM 6 Operate the throttle trigger on the transmitter and ch
87. the minimum reliable idle soeed Remember this adjustment should be made while the engine is running at normal operating temperature 1 Turn the throttle trim on the transmitter so the brakes are applied note its original position This ensures that the throttle Slide is resting against the idle adjustment screw 2 Turn the screw counterclockwise to reduce the idle speed or clockwise to increase it The idle speed should be set as low as possible while still maintaining reliable running characteristics 3 Reset the throttle trim on the transmitter to its original position Fine Tuning the Carburetor After fine tuning your TRX 3 3 Racing Engine at the end of the break in procedure no major adjustments to the fuel mixture are usually necessary Make note of the temperature humidity and barometric pressure at the time you finished fine tuning your carburetor Current weather conditions can be found online from national websites local TV news websites and television This information will be considered your baseline setting You may need to adjust your carburetor needles to compensate for changes in temperature and barometric pressure air density from day to day Generally you ll need to richen the fuel mixture when the weather is colder than your baseline temperature and the air density is higher Lean the fuel mixture when weather is warmer than your baseline temperature and the air density is lower The chart below provides gene
88. the model drive straight with no steering input at the wheel Servo Reversing Switches The servo reversing switches are located on the front of the transmitter next to the on off switch Moving a switch reverses the direction of the corresponding servo Each switch corresponds to a channel as shown below For example if you turn the steering wheel to the right and your front wheels turn left you would move the channel 1 switch to correct the servo direction It may be necessary to adjust the corresponding trim control after moving a switch The default position for the servo reversing switches is shown Accelerate In addition to the electronic throttle and steering trim controls your radio Throttle system features throttle neutral adjustment and servo reversing switches Servo Channel Steering 1 Default Setting Throttle Neutral Adjustment The throttle neutral adjustment is located on the transmitter face and controls the forward brake travel of the throttle trigger Change the adjustment by pressing the button and sliding it to the desired position There are two settings available 50 50 Allows equal travel for both acceleration and braking 70 30 Allows more throttle travel 70 and less brake travel 30 50 50 is the required setting for Slayer with the TRX 3 3 Racing Engine qw SLAYER E 13 THE TRAXXAS TQ RADIO SYSTEM Always have the transmitter and receiver turned on before you start
89. the motor by cutting power if the load on the motor or other electronics exceeds safe limits v C2 C2 Installing the EZ Start Battery The EZ Start system requires a fully charged 7 2 volt rechargeable NiCad or NiMH battery pack not included Use a charger not included designed for 7 2 volt battery packs Charge the battery according to the charger manufacturer s directions 1 Press the tab in the end of the battery compartment door to open A 2 Plug a fully charged 7 2 volt battery pack into the connector inside B 3 Twist the battery two or three times to twirl the battery plug wires This helps hold the wire and battery in place when the battery is installed in the compartment C 4 Install the battery into the compartment and press the wires securely into place 5 Snap the battery compartment door back on and lock the end tab D Using the EZ Start Your EZ Start controller plugs into a 4 prong receptacle in the center of the bed on your Slayer When the red button on the controller is pressed the EZ Start motor begins to spin the engine and power from the control unit heats the glow plug Assuming all settings and preparations are correct the engine should start almost immediately Each of the two status indicator LEDs on the hand held control unit the Motor LED and the Glow Plug LED should light green while starting If either LED fails to light while starting there is a fault
90. tion The standing position that the servos seek when the transmitter controls are at the neutral setting NiCad Abbreviation for nickel cadmium The original rechargeable hobby pack NiCad batteries have very high current handling high capacity and can last up to 1000 charging cycles Good charging procedures are required to reduce the possibility of developing a memory effect and shortened run times NiMH Abbreviation for nickel metal hydride Rechargeable NiMH batteries offer high current handling and much greater resistance to the memory effect NiMH batteries generally allow higher capacity than NiCad batteries They can last up to 500 charge cycles A peak charger designed for NiMH batteries is required for optimal performance Receiver The radio unit inside your model that receives signals from the transmitter and relays them to the servos RX Pack RX is a common abbreviation for the radio receiver and items associated with it RX Pack denotes the optional rechargeable battery pack used to power the radio system in the model It is available as Traxxas part number 3037 Servos Small motor units in your Slayer that operate the throttle and steering mechanisms Transmitter The hand held radio unit that sends throttle and steering instructions to your model Trim The fine tuning adjustment of the neutral position of the servos made by adjusting the throttle and steering trim sliders on the face of the trans
91. to avoid starting and tuning difficulties There are limits to how much nitro an engine can effectively use to make more power Lower nitro percentages have their own advantages Nitro is an expensive component in the fuel so 10 nitro blend is more economical for the sport user 10 also provides greater latitude with the needle settings for easier tuning When using Traxxas Top Fuel using higher nitro percentages does not cause the engine to wear out faster 33 Top Fuel contains the same quality lubrication package as 10 and 20 Top Fuel Some non Traxxas high percentage nitro racing fuels do sacrifice some lubrication in attempts to increase performance We urge you to not take chances with your engine investment and use Top Fuel for consistent performance and long engine life What about Other Fuels Can other brands of fuel be used besides Top Fuel There are other fuels that can provide satisfactory performance however there could be long term costs in the form of decreased engine performance loss of tuning ease and shorter engine life Only use fuels that contain both castor and synthetic oil Everyone has an opinion or a claim to make about fuel The engineering team at Traxxas has spent years developing TRX Racing Engines No one knows more about the specific fuel requirements of Traxxas engines than Traxxas engineers We strongly urge you not to take chances with your engine investment and use the Traxxas fuel made for the TRX 3
92. y cold engine can become difficult to start After the engine is running it is important to keep the temperature of the engine up around 200 to 215 degrees during break in In weather below 45 degrees the TRX 3 3 Racing Engine will tend to run at lower temperatures between 160 to 180 degrees when tuned at proper break in mixture settings This is too cool for break in Do not lean the fuel mixture to increase engine temperature This will also decrease lubrication and cause your piston sleeve to wear prematurely Wrap the cooling head with a paper towel clean rag or sock to help keep the engine running around the recommended 200 to 215 break in temp If too much heat is contained the engine can actually run too hot Make sure that you monitor the engine s temp closely for the first couple of tanks until you get the right amount of cover for the cooling head This will of course depend on your current weather conditions Adjusting the cover up and down exposing more or fewer cooling fins is a convenient way to regulate engine temps We do not recommend that you operate your engine below 35 degrees Fahrenheit If you insist on running your vehicle below 35 degrees be aware that nitro engines may be very difficult to start and tune at extremely cold temperatures Also at temperatures below freezing nitro fuel can actually begin to gel up and this can be harmful to the engine Follow the remaining break
93. ypical decal placement a5 Se SLAYER Your Slayer is equipped with the TQ radio system The TQ is a 2 channel system that provides up to a quarter mile range and control for up to three servo outputs A Throttle Neutral Adjust ntenna Throttle Trim Steering Trim _ Steering Wheel l L _ THROTTLE TRIM STEERING TRIM Throttle Trigger Servo Reversing Switch b Ses Power Switch Battery Compartment Power Indicator 4 cell Battery Holder Steering Servo Antenna Throttle Brake Servo Receiver Battery Channel 3 not used Channel 2 Channel 1 not used Channel 1 Slayer has a provision for a built in charging jack so you do not have to remove the battery pack from the model The wire for the charging jack is supplied with the factory harness and is stored inside the receiver box It is not installed in the charging jack to prevent inadvertently charging alkaline batteries Never use the charging jack with the 4 cell battery holder The charging jack is for optional rechargeable 5 cell nickel metal hydride NiMH batteries only See page 11 for more details SLAYER 9 p Learn terms related to the TRX 3 3 Racing Engine beginning on page 18 10 e SLAYER THE TRAXXAS TQ RADIO SYSTEM Please take a moment to familiarize yourself with these radio system terms They will be used throughout this manual 5 Cell Pack Another term

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