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1/4 Scale Cub Manual - Hangar-9

1. ALMOST READY TO FLY HANGAR 9 100 Wingspan 90 pre built Covered in Cub yellow WorldTex fabric covering Includes Scale detailing instructions Cub yellow fiberglass cowl included IMAA legal All hardware included Specifications VVIFIBSDBH cea iba DP sach a ON 100 woes EAN 64 Wing AFea cioe dei rh ECC e RE 1350 sq in Weight Approx 13 16 Ibs Recommended Engines 2 Cycle 1 08 1 48 4 Cycle 1 20 1 80 Gas Zenoah G23cc 254 cm 154 cm 3429 sq cm 5 9 7 3 kg Table of Contents 3 esee Re 3 Additional REQUIFED EQUIDITIGDE T e nh sie y E 4 NIAC OIM TN E ERE 6 section 1 Assemblinghe WIPDG hie RD ULIS IMS EE 7 Section 2 Installing Me Alon SONOS ovre reve eri Re SUIS 9 section 3 Imstalling tbesATleron eor ne mere 12 Section 4 Bolting the Wing to the Fuselage 14 Section 5 Installing the Horizontal and Vertical Stabilizers 15 Section 6
2. Left wing panel with aileron HAN1551 Wing struts 1556 Right wing panel with aileron HAN1551 Fiberglass painted cowl HAN1554 Fuselage HAN1553 Horizontal stabilizer and elevator HAN1552 Vertical stabilizer fin and rudder HAN1552 X Er amus NL E _ Small Parts Windshield Sidewindows HAN1555 4 40 pushrod linkages Metal Clevis Wing Joiner HAN1559 Fuel Tank Floor Control horns Landing gear HAN1557 Landing Gear Support Wire amp Control linkage hardware Wheels DUB425TLC Shock Absorbers HAN1557 Non conductive Nylon Throttle Engine mount glow HAN2033 Fuel tank w gas option Pushrod HAN1459 Servo Tray stopper tubing Sky Window Engine mount Zenoah G 23 Decals Engine Valve Covers Wood pushrods Tail wheel and hardware HAN1558 Main axles X E m m Sl 9 lt gt k a d a m Section 1 Assembling the Wing Parts Needed Tools and Adhesives Needed e Right wing panel with aileron and hinges e Instant thin CA glue e eft wing panel with aileron and hinges CA remover debonder Paper towels e T pins one for each hinge Note The control surfaces which include the ailerons ele Step 4 Slide each hinge into the wing panel until the T pin is vator and rudder come with the hinges installed but snug against the wing This procedure is suggested to ensure the hinges are not glued in place It s imperat
3. Step 15 Reposition the switch plate as shown below and place the switch inside the fuselage Using the two screws supplied with the switch attach the switch to the fuselage Plug in the Step 13 Use the switch plate as a template and mark the open switch to the receiver receiver battery Be sure it is off as you ing and screw holes of the switch on the fuselage side proceed with the construction sequence Section 14 Assembling and Installing the Rudder Elevator and Throttle Linkages Parts Needed Tools and Adhesives Needed Fuselage 12 threaded 4 40 rods 3 6 threaded 4 40 rods 2 Wood pushrods 23 3 4 2 Heat shrink tubing Clevis 5 4 40 nuts 5 Clevis clips 5 Note Before assembling the pushrods locate the heat shrink tubing and cut into five equal length pieces Step 1 The rudder and elevator pushrods are made up of the parts shown below Locate the heat shrink tubing and cut it into five equal sections with a sharp hobby knife or scissors Step 2 The pushrod exits for the elevator and rudder will have to be cut out of the tail section of the aircraft Locate the template in the back of the manual Cut it out and use it to locate and mark the approximate position for the pushrod exits Position the template and mark the location of the rudder and elevator pushrod exits using a felt tipped pen or pencil Felt tipped pen pencil 6 minute epoxy Hobby knife Heat gun Masking tape Ruler Dril
4. WEBRA 1 20 Recommended Gasoline Engine Zenoah G 23 Parts Needed not inciuded in the kit Aileron extension 2 JRPA101 18 Gold Y harness 1 JRPA133 Needed to connect aileron servos to one channel Aileron of the receiver Propeller Refer to propeller recommendations listed in your engine s operating instructions Foam for cushioning tank Fuel tubing 12 Gas or glow depending on your choice of engine Fuel filler Shut off switch for gasoline engine operation ZEN20000 Note This is an important safety item for all gasoline powered engine installations Tools and Supplies Needed not included in kit Adhesives Thin CA cyanoacrylate glue Thick CA cyanoacrylate glue CA remover debonder 6 minute Epoxy 30 minute Epoxy Blue Locktite Canopy glue Tools Drill Drill bits 1 16 1 8 5 32 1 4 3 8 Medium Phillips screwdriver Z bend pliers Pliers needle nose Small round file Hobby knife with 11 blade Mixing sticks Epoxy brushes 90 degree triangle Medium sandpaper Masking tape Straight edge Measuring device 6 0 ruler tape measure 56155015 Paper towels Wax paper Rubbing alcohol Felt tipped pen pencil T pins Moto tool with cut off wheel Other Equipment Items Radio packing foam Antenna tube Scale detail supplies per Greg Hahn included in instructions Kit Contents Note Photo of product may vary slightly from contents in the box Large Parts
5. e Rubbing alcohol e Epoxy brush e Felt tipped pen or pencil e Paper towels Step 1 Locate the tail wheel assembly The tail wheel assembly can be installed after the rudder is hinged to the vertical stabiliz however you may wish to mount some of the tail wheel assembly parts prior to hinging the rudder Step 2 Three hinges are used to mount the rudder to the verti cal stabilizer The slot for the lower hinge the one going into the rear of the fuselage has not been cut out Trial fit the rudder with the three hinges attached and mark the location of where the slot will have to be cut in the rear of the fuselage Step 3 With a sharp hobby knife cut the slot for the third hinge in the rear of the fuselage Trial fit the rudder to the fuse lage vertical stabilizer to make sure the rudder is aligned proper ly up down to the fuselage and vertical stabilizer There should be no binding of the rudder movement Step 4 Remove the rudder from the vertical stabilizer The main frame of the tail wheel assembly that which attaches to the rear of the fuselage can be trial fitted to the fuselage Mark the screw locations with a felt tipped pen or pencil Section 8 Hinging the Rudder and Mounting the Tail Wheel Assembly CONTINUED Step 5 Trial fit the T shaped arm to the rudder Mark the screw locations with a felt tipped pen or pencil Step 8 Install the rudder onto the vertical stabilizer Make sure the rudd
6. Installing the Rudder and Elevator Control Horns 19 Section 7 Mounting and Hinging the 0 5 21 Section 8 Hinging the Rudder and Mounting the Tail Wheel Assembly 22 Section 9 Installing the Main Landing Gear and 5 24 section Installing De ics am oot tm o eiit n ine tti eee eta 26 Section 11 Installing the Engine Gasoline 28 Section 12 Assembling and Installing the Fuel Tank Glow and Gas 0 5 30 Section T3 Installirg the Radio System dde ttc 34 Section 14 Assembling and Installing the Rudder Elevator and Throttle Linkages 37 Sectiori 15 Iristalliric oett eur 46 Section 16 Installing the Windshield Side Windows and Cabin Overhead Window 48 section 7 Attachirig the GOWIIPI 5 23 s De ok sew nit E ei RTI 50 Section 18 Control Throw Recommendations 53 Section 19 Balancing the Hangar 9 1 4 Scale J 3 Cub 22 2 2 2 54 section
7. plastic cap and tighten it until it just begins to thread into the black cap on the other side of the rubber stopper 31 32 Section 12 Assembling and Installing the Fuel Tank Glow and Gas Versions Step 10 Carefully insert the assembly into the fuel tank Note he position of the vent tube it must be at the top portion of he fuel tank to function properly Also it may be necessary to shorten the length of the fuel pickup tubing so the clunk does not rub against the back of the tank Test by turning the tank upside down The clunk should be free to drop down toward the op of the tank which is not the bottom of the tank Try position ing the tank in nose down rolls and other positions making sure he clunk is free to move and does not bind when the tank is in any position Step 11 Tighten the 3mm screw carefully do not over tighten This allows the rubber stopper to form a seal by being slightly compressed and thus seals the fuel tank opening Step 12 To help in remembering which vent is which we sug gest you mark one tube with a V on some masking tape and attach to the appropriate vent Once the tank is mounted inside the fuselage it will be difficult to determine which tube is which Note The fuel and vent line for the gasoline engine will be located in two places One near the throttle linkage position and the other directly below the normal opening for the 2 4 stroke engine fuel line opening in the
8. 20 3 GUb o rete hate IRIS dale ISI A Ee IIS pue E eat 55 Pre Flightatine Field Me 59 AGI TES 60 S View Drawing Of 2 fa sate al a Se ee Pact ida Ste b oc tae eal eke 61 Templates for side and inverted mounting of 2 4 Cycle 63 Pushrod ExIE dire cick Gao tend RII 65 Cowling Y nate PC CMS A COE ERO Agee 66 Sky Window tertplate ei rs i e ee ertet e e eb e aceite ved te att es 68 70 leetter 225 y ttt y I a e 73 Introduction Thank you for your purchase of the Hangar 9 1 4 Scale Piper J 3 Cub This kit will provide you with a scale model of the original Piper J 3 Cub We believe the design is perfect for R C and makes a beautiful model that will be easy to fly Few would argue that the Piper Cub was one of the most popular light aircraft ever produced Mass sales and acknowledged safety made the Cub almost synonymous with American light aircraft The Full Scale J 3 Cub is powered by a Continental Franklin or Lycoming 65 hp engine Top speed is approxima
9. Exit Right and Left Side L 1 Rudder Exit Left Side Only fuselage 65 Cowling Templates Right Side of Carb on Zenoah G 23 Left Side of Muffler Zenoah G 23 Bottom Opening for Zenoah G 23 66 Right Side Cowl Screw Hole Template Template for Saito 1 20 1 80 inverted 67 68 Sky Window Template 2 pieces Attach front section of template next page Match to Sky Window Template 2 pieces Cowl Screw Hole Location 11 16 11 16 back from edge of lip Right Side 3 1 8 up from first saw hole for cowl 1 1 4 1 4 back and 1 1 4 up from 1 4 Back F SET bottom of cowls 69 Note screw location Interior Floor Template 70 Front Interi Flo s UM RE Se Sa Er p F Front ES Pilot Locat 2 Rear Interior Flo iei Upright ront Front Interior Floor Seat Location Pilot Location 71 72 Front Rear Interior Floor Glue Joint Side View Rear Upright Wing Letter Numher Size Template 3 3 4 3 4 gt 74 75 HANGAR 9 2000 Horizon Hobby Inc Distributed Exclusively by Horizon Hobby Inc www horizonhobby com 3 View Drawing of J 3 Cub 77
10. are drilled you will want to put a drop of CA glue in each hole to help strengthen the balsa You will have to re drill the holes after the CA has cured Step 6 Mount the control horn using the two screws Carefully screw in the screws and engage the plastic plate on the other side We recommend covering the area around the horn with masking tape to prevent damage to the covering in case the screwdriver slips Step 7 Repeat the process in Steps 2 6 for the left elevator Once the control horns are mounted on the elevators they can be removed while the rudder control horn is being installed The elevators will be permanently hinged later Step 8 Locate the remaining control horn and associated hard ware The top of the rudder control horn is located 13 up from the bottom of the rudder Measure and mark the left side of the rudder as the pilot is sitting in the cockpit This is the side the rudder linkage will be attached CONTINUED Step 9 Trial fit the rudder control horn centered on your mark and make sure the portion of the horn with the holes is centered over the hinge line of the rudder If not adjust as necessary It s important the rudder control horn be centered on the hinge line of the vertical stabilizer rudder Step 10 When you re satisfied mark the two screw holes with a felt tipped pen or pencil The horn location should not interfere with the movement of the elevators up or down Step 11 Drill the ho
11. at this time to ease the construction process Section 6 Installing the Elevator and Rudder Control Horns Parts Needed Tools and Adhesives Needed Control horns 3 Thin CA glue Control horn back plates 3 CA debonder Control horn screws 12 Drill Drill bit 1 16 3 32 Felt tipped pen pencil Medium Phillips screwdriver Ruler Fuselage with horizontal and vertical stabilizers attached Elevators 2 Rudder Step 1 Locate the two elevator halves Make sure the hinges Step 3 Locate one nylon horn Trial fit the horn on the right are still installed You will also need two nylon control horns elevator with the horn positioned so the holes that the clevis will two backplates and four screws go into are aligned with the hinge line of the elevator the for ward edge that will fit against the horizontal stabilizer Step 2 For illustration purposes we will describe installing the control horn on the bottom of the right elevator first Measure Step 4 Line up the inside edge of the horn with the mark you 1 2 back from the hinge line of the elevator and 1 2 from the made in Step 2 Mark the screw holes with a felt tipped pen edge of the elevator that is closest to the fuselage Make a mark or pencil with a felt tipped pen Do the same for the other elevator 19 Section 6 Installing the Elevator and Rudder Control Horns Step 5 Using a 1 16 drill bit drill two pilot holes for the horn After the holes
12. for ward portion of the cabin area using the hardware provided You may need to carefully trim the covering away from the opening The blind nuts are already installed Use a drop of Threadlock applied to the threads before installing the screws Step 3 Attach the 16 aluminum wing brace to the area behind the forward brace using the screws provided Remember to apply Threadlock to the screws first i Step 4 Slide both wing panels on the wing braces and attach the left and right wing panels using the two wing bolts washers provided This is a temporary installation to help in the align ment of the horizontal and vertical stabilizers in the next section Note The wing struts will be installed in Section 15 WARNING The wing struts MUST be installed before flight They are functional providing the support necessary for the wing to withstand normal flight loads Do not fly the aircraft without the wing struts installed Section 5 Installing the Horizontal and Vertical Stabilizer Parts Needed Tools and Adhesives Needed e Fuselage w wing temporially mounted e Horizontal stabilizer e Vertical stabilizer e Hobby knife with 11 blade _ e Ruler Felt tipped pen e Pencil e 30 minute epoxy e Paper towels Rubbing alcohol e Mixing stick e Masking tape e Epoxy brush 90 degree triangle Step 1 On the rear of the fuselage slots are pre cut in the wood structure for the horizontal stabilizer and th
13. into the fuselage opening by sliding the horizontal stabilizer back and forth approximately 1 8 1 4 and applying epoxy to the top and bottom surfaces Use an epoxy brush to apply the epoxy Some can be inserted through the top vertical stabilizer slot but use care not to overdo as the vertical stabilizer will have to be installed also LR Step 14 Check the alignment of the horizontal stabilizer by referring to the marks made previously and measuring the wing to horizontal stabilizer as done in Step 5 and Step 6 Clean excess epoxy away from the horizontal stabilizer fuselage junc tion with rubbing alcohol and a paper towel Use masking tape to hold the horizontal stabilizer in place while epoxying the vertical stabilizer in place in the next step CONTINUED Step 15 Mix up 1 2 ounce of 30 minute epoxy and apply to the vertical stabilizer where the fuselage contacts it Also apply epoxy to the base of the vertical stabilizer where it mounts to the fuselage and horizontal stabilizer Insert the vertical stabilizer into the fuselage and wipe away any excess epoxy with a paper towel and rubbing alcohol Step 16 Check the alignment of the vertical stabilizer to the horizontal stabilizer and wing by sighting from the rear of the air craft Use masking tape to hold the vertical stabilizer in place while the epoxy cures Allow the epoxy to cure completely Correct Step 17 The right and left wing panels may be removed
14. locations have to make sure the servo lead wire is not crimped Note the previously marked in Step 4 Once the pilot holes are drilled orientation of the servo and servo arm The servo arm used to mount the servo using the screws provided in you radio system control the aileron linkage is pointing to the wingtip The servo in the other wing half should be positioned so the servo arm also points outward to the wing tip Note also the servo is mounted so the servo arm is positioned closer to the leading edge of the wing x ep Note The supplied 4 40 threaded linkages are of a specified length so make sure the servos are orientated correctly Step 9 With the servo in place mark the location of the servo Screws and then remove the servo Step 11 Repeat the procedure for the other servo in the other wing panel 11 Section 3 Installing the Linkages Parts Needed Tools and Adhesives Needed e Wing panels right and left Short 3 3 4 threaded rod both ends 2 e 5 4 4 40 nuts 4 e Clevis locks 4 e Control horn 1 for each wing panel e Plastic plate 2 e 2mm screws 4 Medium Phillips screwdriver Drill Drill bit 1 16 Felt tipped pen or pencil Thin CA glue optional Step 1 Locate a 4 40 x 3 3 4 threaded rod two 4 40 clevis two clevis locks and two nuts You will also need a control horn plastic plate and two 2mm screws to mount the control hor
15. points on the wing tal stabilizer with the wing carefully mark the position with a to the outside of the trailing edge tip of the horizontal stabilizer pencil at the junction where the horizontal stabilizer meets the Make sure the trailing edge of the horizontal stabilizer stays on fuselage The pencil should leave a slight indentation in the cov its center mark ering Mark both the top and bottom of the horizontal stabilizer Step 6 Adjust the horizontal stabilizer until you have an equal Step 8 Trial fit the vertical stabilizer in place on the fuselage distance on both the right and left side of the fuselage and that after removing the rudder and hinges Set these aside for now as the horizontal stabilizer is positioned correctly not tilted with the rudder will be attached later in Section 8 Make sure the ver reference to the wing Refer to the illustration below tical stabilizer is inserted completely Some trimming to the bot tom of the vertical stabilizer may be required Correct Incorrect m gt Note The back of the vertical stabilizer needs to be aligned with the back of the fuselage Section 5 Installing the Horizontal and Vertical Stabilizer Step 9 Carefully check the vertical stabilizer to make sure it s aligned 90 degrees to the horizontal stabilizer A 90 degree triangle is helpful in this step Hint When installing the vertical stabilizer use the rudder to check for proper stabi
16. threaded clevis on one end and a 2 56 solder clevis on the other Thread on the threaded clevis at least 10 turns and attach to one of the steel straps Trial fit the wire to determine the length of the wire Be sure to include length of the solder clevis as part of your measurement When you are satisfied with the length cut the rod and solder the solder link onto the wire to form the tail wire Repeat the construction process for each wire lua m gt Step 16 Mount the wires to the tail and adjust each threaded clevis so that the wire is snug WITHOUT undue side pressure Once satisfied with the fit set with a drop of CA glue on the threads Step 17 Paint only the tabs with chrome yellow the wires and clevis stay natural Step 18 Paint the tailwheel bracket and spring Flat Black TES1749 Step 19 The gas cap can be detailed by use a 3 0 x 1 hard wood dowel Round one end and drill a 1 16 hole in the center top Step 20 Glue a 1 16 wire with 90 degree bend 1 8 on one end into the hole 57 58 Section 20 Scale Detailing the J 3 Cub Step 21 Drill 3 8 hole in the top center of the cowl sheeting just forward of windscreen Step 22 Paint the lower end flat black TES1749 and the upper round end with the wire flat red TES1705 Glue in the gas cap using CA glue Step 23 Paint the engine portion of the cowling flat black and attach the provided black cooling jackets one on each side
17. until it meets the servo arm Be sure the inner tube is in line with the servo arm Mark the inside of the fuselage at the fuselage formers where the outer tube will be glued Step 37 Remove the inner tube and use a small amount of 6 minute epoxy or thick CA to secure the outer tube to the fuselage doubler Hint It is helpful to roughen the tube with sandpaper before applying the glue to make sure it adheres well Be careful not to get any glue in the opening of the outer tube Let the epoxy or CA thoroughly cure before proceeding with the next step CONTINUED Step 38 Take the 1 threaded rod and thread it onto one end of the inner tube Screw the 2 56 clevis 7 to 10 turns onto the 1 threaded rod The clevis will be attached to the throttle arm Slide the inner tube into the outer tube from the firewall end Note Use a small piece of fuel tubing to keep the clevis from accidently opening in flight Step 39 Take the 2 rod and make a Z bend at the unthreaded end of the rod The threaded end will have to screw into the inner rod so DO NOT make the Z bend at the threaded end Insert the Z bend end of the rod into the throttle servo arm It will be easier to insert the Z bend if you remove the throttle arm from the servo Turn on your radio system and center the throttle servo arm Also be sure that your throttle trim on your transmitter is centered With the inner tube installed attach the clevis to your engine s th
18. using the 2x3 8 self tapping wood screws Step 24 Paint the square valve covers flat light gray CONTINUED Step 25 Wing numbers The wing numbers can be made from black vinyl sheets or black UltraCote Plus Normal num bers are 6 digits including the N prefix Use your personal num ber Place in the center of the top right and bottom of the left of the wing panel as viewed from the pilot seat Refer to the 3 view for approximate placement and to the number size template in the back of the manual Pre Flight at the Field Range Test Your Radio Step 1 Before each flying session be sure to range check your radio This is accomplished by turning on your transmitter with the antenna collapsed Turn on the receiver in your airplane With your airplane on the ground you should be able to walk 30 paces approximately 100 feet away from your airplane and still have complete control of all functions If not don t attempt to fly Have your radio equipment checked out by the manufacturer Step 2 Double check that all controls aileron elevator rudder and throttle move in the correct direction Step 3 Be sure that your batteries are fully charged per the instructions included with your radio Adjusting the Engine Step 1 Completely read the instructions included with your engine and follow the recommended break in procedure Step 2 full throt At the field adjust the engine to a slightly rich setting a
19. wire to guide the blind nut into position then use a screw to tighten the blind nut into the plywood fire wall You can also reach inside the fuselage if your hand is not too large Step 7 Secure the metal motor mount to the firewall by installing the screws into the blind nuts Do not tighten com pletely until you trial fit the engine on the metal motor mount once more to make sure they are positioned at the proper width When you are satisfied with the fit securely tighten the screws of the metal motor mount to the firewall It would be a good idea to also apply Threadlock to the threads of the screws before they are tightened down as a means of preventing loosening of the screws due to vibration Step 8 With the engine mounted mark the location of the throttle pushrod exit on the firewall Make sure the mark is directly in line with the throttle arm Remove the engine and drill a 1 4 hole in the firewall Step 9 Important The drawing below shows the distance of the engine placements prior to the trial fitting of the cowl Fuselage 27 Section 11 Installing the Engine Gasoline Parts Needed Tools and Adhesives Needed e Fuselage e Plywood motor mount e Mounting hardware 4mm x 30mm machine screws 4 4mm washers 4 4mm nuts 4 blind nuts 4 e Flat head screws 4 e Engine e Shut off kill switch and hardware ZEN 20000 Phillips screwdriver Small round file Drill Drill bit 6 8mm
20. 6 minute epoxy Rubbing alcohol Paper towels Required but not included in kit Felt tipped pen or pencil Note Installation of the Zenoah G 23 Gasoline engine is not Step 2 Cut out the template found at the back of this manual difficult however there are two things that are impor and mark where the throttle and fuel line holes are located Also tant to keep in mind First a shut off or kill switch mark where the round Phillips head screws are located Refer to is a requirement for safety reasons Please refer to the illustration below for their relative location your Zenoah Engine Operating Instructions for the details on how to install a shut off switch Second the G 23 is heavier than most glow engines and O requires weight to be added to the tail of the aircraft to 9 Flat Head balance properly Be sure to read Section 19 and make Philips Head Screws Philips Head sure the aircraft is correctly balanced prior to attempt ing to fiy i Q Throttle Linkage Step 1 We will use a mixture of 6 minute epoxy and rubbing Fuel alcohol to seal the firewall area and the 1 4 plywood motor C Pat Head Fit Head O mount Mix up approximately 1 ounce of 6 minute epoxy and Screws Screws 1 2 ounce of rubbing alcohol Mix thoroughly and brush it on Round Round o the entire firewall area and the plywood motor mount to seal them from fuel Allow the epoxy to cure completely not
21. Step 14 Trial fit the long threaded rod onto the wood pushrod When you are satisfied with the fit mix up approximately 1 4 oz of 6 minute epoxy and apply to the hole and groove Insert the rod into the hole and groove Wrap the area where the rod con tacts the wood with included heavy nylon string Step 15 Before the epoxy is cured slide a piece of heat shrink tubing over the wood pushrod and threaded rod Use a heat gun to shrink the tubing in place Step 16 Repeat the process to attach the 6 threaded rod to the wood pushrod Allow the epoxy to cure completely before pro ceeding to the next step 39 40 Section 14 Assembling and Installing the Rudder Elevator and Throttle Linkages CONTINUED Step 17 Insert the rudder pushrod assembly long 12 Step 19 You can adjust the clevis at either end or both in or threaded rod first into the fuselage so the threaded rod exits the out to make adjustments to the rudder control surface to make it rudder pushrod hole Screw on a nut and then clevis approxi centered in neutral or 0 degrees deflection with the transmitter mately 10 turns Fasten the clevis to the rudder control horn Stick and trim centered Attach the clevis clip to keep the clevis from opening accidental ly in flight Step 20 The elevator pushrod is made similar to the rudder pushrod with the exception being the use of two 12 4 40 rods Step 21 Begin by marking the wood pushrod as follows on on
22. T ANSL SNELL standard while on the racecourse In addition all officials occupying safety cages must wear protective eye wear 61 SPECIFICAT EMPTY G90 WSEFUL LOAD 54D Ex GROSS WEKIHT 1100 vas WING 176 5 i LETA PUES POWER LONG 22 0 hi HP 58 SPEED BT mph 2 CEUSHG SPEEG LANGNG SPEED 38 mpa a RANGE aT CRUISE BPO miles MAX CEILING 12 500 free FUEL CAPACITY pals d Ol CAPACITY gal CONSUMPTION 9 4 pole he POWER CONTINENTAL 4 G5 4 LrCOMING 425548 FASHKLIN 4 65 ALL 65 HP AT 200 STAHDARO FACTORY amp 5LIE OVER ALL CUB YELLOW DEEP RELI YELLUW ALACK TRIM OTHER COLORS AT CUSTOMERS REQUEST EPRA 5 TIAL BODER F Full Scale Cub 3 View Full Scale Cub 3 View STara FIH Javna IMPHAL HAS TH T EMIL enr 21924 303422 sane uoo TE M E 62 Side Mounted Engine 1 20 1 80 4 Stroke 1 08 1 48 2 Stroke 63 64 Inverted Mounted Engine Throttle 1 20 1 80 4 Stroke 1 08 1 48 2 Stroke Gas Engine Mounting Plate Flat Head Screw O Round Head Pushrod Exits Flat Head Screw Flat Head Screw Round Head Elevator
23. ced Do not neglect this step The recommended Center of Gravity C G location for the first flight of the J 3 Cub is 4 s to 5 behind the leading edge of the wing If necessary add weight to either the nose or the tail until the correct balance is achieved Stick on weights are available at your local hobby shop and work well for this purpose Section 20 Scale Detailing the J 3 Cub Parts Needed Tools and Adhesives Needed 24x12x1 8 lite plywood 1 3 4x1 4x16 bass wood 1 3 8x1 hardwood dowel 1x3 8x4 balsa 1 2 56 threaded rod 4 2 56 solder clevis 4 2 56 threaded clevis 4 Nickel plate strap 1 Steel straps 6 2 56 bolts lock nuts 5 1 2x3 8 self tapping wood screws 21 Hangar 9 1 4 Scale pilot Instrument panel Roll yellow 3M pool tape 1 1 16x12 music wire 1 Paint List 1 Chrome Yellow 2 Flat Black 3 Insignia Red 4 Flat Light Gray MID5530 MID4069 MID MID6108 DUB801 DUB112 DUB109 DUB202 DUB158 DUB174 DUBS25 HAN8275 HAN184 K amp S504 TES1708 TES1749 TES1705 TES1730 Hobby knife with 11 Blade Zonah Saw or Jig Saw optional Medium Phillips Screwdriver Medium sandpaper Tin Snip or sheet metal cutters Paint brush Paint Thinner Drill Drill Bit 1 16 3 8 Thin CA glue CA debonder 6 minute Epoxy Rubbing Alcohol Paper towels Scale detailing your Cub will have little affect on the flight char acteristics The following sequence of constructio
24. e 2 x 3 8 self tapping wood screws to install the Step 10 The main struts will need to be modified slightly to interior cover s create a more scale look Begin by cutting the bolt tabs from supplied inter plane strut mounts leaving only L shaped bracket Hint A tin snip works great for this The C clamp portion of the hardware will not be used Step 8 Finish and paint the pilot figure s Place the pilot s on interior covers in appropriate positions single pilot goes in j rear seat Step 11 Drill through the bracket and the wood strut and attach the two together with a 2 56 bolt and lock nut both sides Do this for the three remaining brackets Section 20 Scale Detailing the 3 Step 12 Paint all bare aluminum fittings and bolt heads with chrome yellow Testors paint 51708 Step 13 The tail wire supports are constructed by first drilling bolt holes for the tab attachment fittings in the appropriate posi tions on horizontal and vertical stabilizer s Step 14 The six 6 steel landing gear straps are bent 25 degrees and will be used for the support wire attachments Note there are two steel straps on either side of the vertical stabilizer and two on each horizontal stabilizer half four total Bolt together with a 2 56 bolt and lock nut Step 15 Use 2 56 rods threaded on one end for each of the tail wires Each tail wire will be constructed by attaching a 2 56
25. e end for the 6 rod mark 1 1 2 from the end of the rod on the other end make a mark 2 from the end and another mark 3 from the end Step 18 Center the rudder servo and position the servo control arm so it is 90 degrees to the pushrod linkage Attach the rudder pushrod clevis to the rudder servo arm Section 14 Assembling and Installing the Rudder Elevator and Throttle Linkages CONTINUED Step 22 Use 1 8 drill bit to drill a hole 1 1 2 from the end of Step 25 Mark the non threaded parts of the rods where the pushrod Turn the wood rod so that the hole you just drilled is bends will be made in reference to the holes drilled in the wood not in line to the two holes drilled for the elevator rods The rods pushrod the 1 1 2 2 and 3 locations made in Step 21 for the elevator halves will be on opposite sides of the pushrod Refer to drawing Top View N NNI Elevator Pushrod Step 23 To determine the length of the elevator pushrod tem porarily tape the 6 at the 1 1 2 mark on the wooden rod Place the 12 at the 2 and 3 marks using masking tape Thread a cle vis to the threaded end of the rods approximately 10 turns Make sure the metal rods are clear of tape at the marked locations on the wooden rod as you will be marking the rods once the approximate pushrod length is determined Step 26 Use needle nose pliers or a similar tool to make a 90 degree bend at the opposite end of the treaded rod
26. e valve openings cylinder head external fill openings etc Note Be sure to set the engine prop hub 5 3 4 from the firewall Step 3 We suggest making templates of the cylinder head opening needle valve location etc in order to determine what areas to remove from the cowl so the engine will be enclosed Sample cylinder head templates for the inverted Saito 150 side mounted MDS 1 48 and Zenoah G 23 are provided at the back of the manual This is done though the use of a template with the opening cut out a strip of heavy paper or light cardboard to help position the template and masking tape to hold the template in place with the motor mounted When the cowl is mounted the motor being removed before the cowl is positioned the template is flipped back into position and the opening is traced onto the cowl with a felt tipped pen or pencil Section 17 Attaching the Cowling CONTINUED Step 4 Before marking the openings be sure the cowl is posi Step 6 After the cowl is mounted proceed with marking the tion on the fuselage with sufficient material to allow it to be openings for the engine cylinder head needle valve etc through mounted to the fuselage using four screws provided Mark the the use of the templates screw locations two on either side of the cowl as shown below E Note The Saito 1 50 can use the supplied muffler which will require some trimming of the firewall see below or a flex pipe to divert exha
27. e vertical stabi lizer Use a hobby knife to trim away the covering using caution to not cut into the balsawood Step 2 Remove the elevators from the horizontal stabilizer tak ing care not to lose any of the CA hinges The Elevators will be attached in Section 7 Use a straightedge of locate the center line of the horizontal stabilizer This line will serve as a reference point when the horizontal stabilizer is mounted to the fuselage Step 3 Slide the horizontal stabilizer carefully into the slot pro vided in the fuselage You may have to trim the opening to allow the horizontal stabilizer to be inserted By noting the centerline you marked position the horizontal stabilizer so that it s centered in the fuselage opening where the vertical stabilizer will go Step 4 Mark the center of the rear of the fuselage where the rudder will be placed Position the horizontal stabilizer so it s center line mark is in line with the fuselage rear mark Use the ruler to make sure the horizontal stabilizer projects an equal amount on either side of the fuselage at that point see below Also check that the stabilizer is level with the wing by sighting it from the rear of the fuselage 15 Section 5 Installing the Horizontal and Vertical Stabilizer CONTINUED Step 5 With the fuselage resting on a flat surface align the Step 7 When you re satisfied with the alignment of the horizon horizontal stabilizer by measuring from fixed
28. er is aligned properly Use thin CA to hinge the rudder to the vertical stabilizer Follow the same procedures to hinge the Step 6 Use a 1 16 drill to make pilot holes for the screws to rudder as you did in Section 7 Allow the CA to cure completely mount the tail wheel assembly Wipe away any excess CA with a paper towel Step 9 Flex the rudder back and forth to work in the hinges Make sure the hinges are secure by trying to pull the rudder from the vertical stabilizer Use care not to crush the structure Step 10 Attach the springs to the main tail wheel assembly and the T shaped piece on the rudder Step 7 Once the pilot holes have been drilled mount the alu minum tail wheel pieces to the fuselage We suggest mixing up 1 4 ounce of 30 minute epoxy and applying it to the holes first before mounting the tail wheel pieces to the fuselage Do the same for the T shaped arm mounted to the rudder Allow the epoxy to cure before installing the tail wheel wire wheel collars and tail wheel to the aircraft 23 Section 9 Installing the Main Landing Gear and Wheels Parts Needed Tools and Adhesives Needed e Pre painted aluminum landing gear e Small Phillips screwdriver e Wheels 2 e Moto tool with carbide cutting disc Landing gear bolts 4 e Threadlock Blind nuts 4 e Hobby knife with 11 blade e Axels w lock nuts 2 e Round file e Wheel collar w screw 2 e Drill e Nylon wheel spacer 4 e Dril
29. ess will be maintained throughout the length of the aileron The hinge is constructed of a special material that allows the CA to wick or penetrate and distribute throughout the hinge securely bonding it to the wood structure Step 10 Repeat this process with the other wing panel secure ly hinging the aileron in place Step 11 After both ailerons are securely hinged and dry firmly grasp the wing and the aileron to check that the hinges are Step 7 Turn the wing panel over and deflect the aileron in the securely glued and cannot be pulled apart To do this apply opposite direction from the opposite side Apply thin CA glue to medium pressure to try to separate the aileron from the wing each aileron hinge making sure the CA penetrates into both the Use caution to be certain you do not crush the wing structure aileron and wing Step 8 Use CA remover debonder and a paper towel to remove excess CA that may have accumulated on the wing or in the aileron hinge area Be careful when using debonder as excess and or some brands might discolor the fabric Section 2 Installing the Aileron Servos Parts Needed Tools and Adhesives Needed e BRight left wing panels e Standard size servos with mounting hardware 2 Note JRS 531 servos or equivalent recommended e Servo extension 18 2 Wood servo blocks 4 e Hobby knife with 11 blade e 6 minute epoxy e Medium Phillips screwdriver e Rubbing alcohol e D
30. et engine axial or centrifugal flow unless waiver for such specific operations from the utive Director and will abide by any restric operation by them Note This does not gines or electric motors olic beverages prior to nor during participa ions will have completed a successful radio equipment ground range ht of a new or repaired model will not fly my model aircraft in the presence of spectators until 1 unless assisted by an experienced helper urn after takeoff away from the pit or spectator areas and will not thereafter fly over pit or spectator areas unless beyond by control will operate my model using only radio contro allowed by the Federal C licensed Amateurs are authorized to operate eq Band frequencies will not knowingly oper existing model club flyin with that club will not fly my model ai tioned For the purpose o frequencies currently ommunications Commission Only properly ipment on Amateur ate an R C system within three miles of a pre 0 site without a frequency sharing agreement rcraft in any racing competition which allows models over 20 pounds unless that competition event is AMA sanc of this paragraph competition is defined as y situation where a winner is determined Every racing event requires that all officials callers and contestants must properly wear helm NOCSAE or comparable ets which are OSHA DO
31. ewall Step 17 Foam around the fuel tank and in the fuel tank com partment can be used to provide some vibration dampening and help support the fuel tank foam is not provided Hint Do not use any foam until after the throttle linkage has been installed Step 18 Use rubber bands provided to secure the fuel tank to the plywood fuel tank floor 33 Section 13 Installing the Radio System Parts Needed Tools and Adhesives Needed e 4 channel radio system with Medium sandpaper e 3 servos and hardware not included e Drill e Fuselage e 1 16 drill bit Radio packing foam not provided e Phillips screwdriver e Antenna tube not provided e Hobby knife with 11 blade e Delux Switch JRPA001 or JR Charge Switch e Felt tipped pen or pencil JRPA004 optional e Masking tape Step 1 Locate the plywood servo tray Trial fit it into the fuse Step 4 Locate three servos and install the grommets and eye lage area as shown There are notches in the tray to help in the lets in all three per the instructions included with the radio Place alignment You may have to trim the servo tray slightly to obtain servos in the servo tray in the fuselage as shown noting the a good fit Use some sandpaper to trim any excess wood to position of the servo arms Use a felt tipped pen or pencil and obtain a good fit mark the twelve servo mounting hole positions 1 Step 2 Once you re satisfied with the fit m
32. firewall CONTINUED Suggestion We mounted the Zenoah G 23 engine inverted and the throttle linkage exited the firewall at the right hand side of the firewall as if you were in the cockpit Drill a hole for the fuel line approximately 3 8 below the opening for the throttle linkage The hole for the vent line can be drilled 3 4 below the motor centered on the firewall We recommend the holes for the fuel line be drilled after the wood motor mount is in position and hat the fuel tank be installed after the gasoline engine is mount ed In this way you can best determine the location of the fuel vent and throttle openings drill the holes and then insta he fuel tank The illustration below of the firewall will help in locating the hrottle linkage and the fuel line openings Round i Round Phillips Head Phillips Head Front Throttle Linkage O Fuel O Flat Flat Round Round O Phillips Head Phillips Head Step 13 Before mounting the fuel tank into the fuselage you will need to install the plywood fuel tank floor Note the shape of the floor helps orient which is the front and rear Note also the slots cut in the plywood allow for the use of rubber bands to hold the tank in position Note We recommend the tank floor not be installed until after the motor mount has been installed It will be much easier to install the motor mount blind nuts before the fuel tank floor is installed Section 12 Assemb
33. fuselage Step 7 Apply Threadlock to the threads of the wing strut screws that attach the wing braces to the wing strut Tighten down the screws and nuts After the Locktite has cured check the security of the wing struts where they are attached to the wings CONTINUED Step 8 Slide each wing panel onto the aluminum wing braces and thread the servo leads into the fuselage Use the large wing bolt washer to tighten the wing to the fuselage Slip the wing strut piece that attaches to the fuselage over each pair of holes in the fuselage and attach with the bolts and washers provided Step 9 Check all nuts and screws to make sure they are secure before attempting a flight Step 10 Remove the wings from the fuselage before attempting to start Section 16 47 48 Section 16 Installing the Windshield Side Windows and Cabin Overhead Window Parts Needed Tools and Adhesives Needed e Windshield windows and cabin overhead window 10 pieces total Wood front windshield brace 2 prepainted Wood screws 4 Machine screws w washers 4 Fuselage Phillips screwdriver Scissors Masking tape Canopy glue e g R C 56 or Pacer Formula 560 Thin CA glue CA debonder Paper towel Drill 1 16 drill bit Step 1 Trim the front windshield on the cut line etched in the windshield with scissors Do the same to the pre painted cabin overhead window Note the lip on the cabin overhead window will fit snugly against
34. ge two on either side CONTINUED Step 7 The cabin overhead window is held in place by four screws with washers The blind nuts are already installed in the fuselage top Locate the overhead window template in the last part of the manual Cut out the template and attach it to the fuse lage using masking tape to hold it in position Trial fit the cabin overhead window template in place Look carefully and you will see the four screw locations through the template Mark the loca tion with a pencil Transfer the template marking to the plastic overhead window Note The screw locations on the template are approximate confirm before transfering to the plastic overhead window Step 8 Use a 1 16 drill bit and drill the four holes as marked Mount the cabin overhead window to the fuselage using the screws and washers provided To mount the wing you will have to remove the cabin overhead window to gain access to the inte rior of the fuselage 49 50 Section 17 Attaching the Cowling Parts Needed e Fiberglass cowl e Fuselage Sheet metal screws 4 Tools and Adhesives Needed Moto tool with sanding drum or carbide cutterr Phillips screwdriver Drill Drill bit 1 16 Masking tape Felt tipped pen Ruler Step 1 Use a Moto tool to grind out the cooling openings in the front of the cowl as marked Step 2 Mount your engine Note those areas that will have to be trimmed out such as the needl
35. hardwood pushrod at each marked end from step 21 Step 7 With the rods temporarily attached and each with a cle vis installed position the assembled pushrod along the outside of the fuselage lining it up with the control horn on the rudder and the servo arm of the rudder servo in the fuselage This will give you an approximate length of the pushrod Step 8 Adjust the rods on the wood pushrod to allow for a 90 degree bend to be made in the non threaded portion of the metal rod that will be attached to the wood pushrod Section 14 Assembling and Installing the Rudder Elevator and Throttle Linkages Step 12 Locate the marked 12 threaded rod and using pliers or similar tool make a 90 degree bend at the mark you made which should be at the opposite end of the threaded portion of the rod The bent section should be trimmed so it s 1 8 to 3 16 long to fit into the holes of the wood pushrod without the end extending out of the hole on the other side Repeat the procedure for the short 6 threaded rod Step 13 Cut a 1 8 groove from the hole to the end of the wood pushrod to help secure the rod into the wood pushrod when the epoxy glue is applied Round out the holes in the groove so the rod fits flush against the wood pushrod Wood Pushrod For the rudder pushrod wires install them on the opposite sides of the wooden dowel so they are not in line with each other ee M Rudder Pushrod CONTINUED
36. he compartment that is in front of the servo tray directly over the landing gear blind nuts Cut out another layer of foam that is the same size only this time cut out an open area in the center to accept the receiver battery Place another solid layer of foam on top Cut an open area in the next layer of foam to accept the receiver Top off with a final layer of foam that holds everything in place Step 11 Place the pre cut foam layers with the battery and receiver in place in the front compartment of the fuselage Route the antenna back through the fuselage using an antenna tube not included or route it outside the fuselage to the vertical stabilizer Hint We used a wood dowel not included cut to fit between the fuselage sides just on top of the protective foam and spot CA to the fuselage sides to hold the receiver and battery in place 35 36 Section 13 Installing the Radio System CONTINUED Step 12 The switch can be installed on the right side of the Step 14 Using a 1 16 drill bit drill two mounting holes for fuselage the pilots right side as he she sits in the cockpit if the switch as marked Use your hobby knife to carefully cut out the engine installed is the Zenoah G 23 gasoline engine If the opening for the switch between the screw holes mounting a 2 or 4 stroke engine you want the switch located on the side opposite from the muffler normally on the left side Le of the aircraft
37. he plywood motor mount and engine should fit flush against the firewall Step 7 Once the plywood motor mount has been attached to the G 23 proceed with mounting the motor and motor mount to the firewall using the four machine screws and four washers Note Instructions on the throttle servo linkage installation will be covered in Section 14 Assembling and Installing the Rudder Elevator and Throttle Linkages 29 Section 12 Assembling and Installing the Fuel Tank Glow and Gas Versions Parts Needed Tools and Adhesives Needed e Plywood fuel tank floor e knife with 11 blade e Fuselage e Medium screwdriver standard e Brass tube long vent e 30 minute epoxy e Brass tube long fuel e Rubbing alcohol e Clunk fuel pickup Epoxy brush e Fuel pickup tubing glow clear e Paper towels e Fuel pickup tubing gas black e Fuel tank Plastic cap 2 e Rubber stopper glow black e Rubber stopper gas red e 3mm screw e Fuel tubing gas not supplied DUB544 AER1073 Foam to wrap around tank optional e Rubber bands 2 provided Note Dubro tank and fittings shown Actual tank and parts Step 2 Locate the appropriate stopper red for gasoline and may vary but assembly will be the same black for glow Insert one long brass tube into one of the open holes in the stopper so an equal amount of tubing extends from each side This will be the fuel tank pickup tube that provides fuel
38. invert ed motor position Also mark the 7 8 diameter opening for the fuel lines at this time Step 2 Locate the two metal motor mounts and associated hardware four blind nuts four 1 screws four 14 screws 12 washers and eight nuts The larger screws will be used to mount the metal motor mount to the firewall The three flathead screws shown in the photo below are used to mount to the ply wood motor mount for the Zenoah G 23 gasoline engine in Section 11 Section 10 Installing the Engine Glow Step 5 Use a drill with a 1 4 drill bit to drill out the holes in the firewall for mounting the metal motor mount You will need to file out the openings slightly when installing the blind nuts so they will project far enough into the rear of the firewall Trial fit the engine to the metal motor mount without the muffler then place it on the firewall to see how everything fits The 7 8 diam eter opening for the fuel lines can be made at this time Step 6 Remove the engine from the metal motor mount before attempting to secure the metal motor mount to the firewall Mount the metal motor mount on the firewall using the hardware provided Do not tighten the screws until you are satisfied with the location and fit Note It will be necessary to install the blind nuts through the fuselage onto the back of the firewall CONTINUED To mount the blind nuts inside the fuselage behind the firewall use a piece of music
39. involved with flying the aircraft are allowed in front of the flight line Flying over the spectator side of the line is prohibited unless beyond the con permissible takeoff wei At ai musi side for spectators On shows or model director or other appropriate official or as having duties or functions relat are to be permitted on the d 0 monstratio ly exceptions which z 62 be established on 01 of the pilot s In any case the maximum ght of the mode is 55 pounds ying demonstrations a single straight line e side of which is for flying with the other y those persons accredited by the contest as necessary for flight operations ng to the conduct of the show or lying side of the line The may be permitted to the single straight line requirements under special circumstances involving consideration of side conditions and model size weight speed jointly approved by the Under all circumstances if my mode d power must be d the Executive Director AMA President a weights over 20 pounds will fly it in accordance with paragraph 5 of this AMA Safety Code will not my model address or AMA number on or in the apply to models flown will not operate mode boosts in which gases engine s nor will unless it is identified with my name and nodel Note this does not indoors Is with metal bladed propellers or
40. ive that each hinge is positioned so an equal portion of the hinge is in you use a high quality thin CA glue to properly each i e half in the wing and half in the aileron adhere the hinges and control surfaces in place Step 1 The wing is made up of a left and right panel with the ailerons temporarily mounted in place You will glue them in place in later steps in this section Note that each aileron is con trolled by its own servo You will need two servos when you begin Section 2 Step 2 Carefully remove one of the wing panels from its pro tective plastic Remove the aileron from the wing panel Note the position of the hinges The J 3 Cub comes with four high quality hinges in each wing panel Step 3 Remove each hinge 4 from the wing panel and insert a T pin near the center of the hinge as shown below Step 5 Slide the aileron onto the wing until there s only a slight gap 1 32 The hinge is now centered on the wing panel and aileron Remove the T pins and snug the aileron against the wing panel so the aileron is free to move and does not bind eK Section 1 Assembling the Wing CONTINUED Step 6 Deflect the aileron and completely saturate each hinge Step 9 Flex the aileron back and forth to work in the hinges with thin CA glue The aileron s front surface should lightly con check for proper movement tact the wing during this procedure Ideally when the hinge is glued in place a 1 32 gap or l
41. ix up 1 4 oz of 6 Step 5 After trial fitting the servos into the servo tray we sug Minute epoxy apply to the front and rear edges of the tray that fit gest the servo leads be identified by using some masking tape into the formers and install the servo tray into the fuselage with the appropriate letter to designate which servo it is e g throttle E elevator and rudder Step 6 Remove the servos and use a drill with a 1 16 drill bit to drill the 12 pilot holes for the servo mounting screws Step 7 Screw the servos in place using the 12 servo mounting screws included with the servos Step 3 Allow the epoxy to cure before installing the servos Section 13 Installing the Radio System Step 8 Use radio packing foam not included available at your local hobby shop when you install the receiver and battery Step 9 Attach the servo leads to the receiver prior to installing the receiver in the radio packing foam Route the antenna back through the fuselage using an antenna tube not included or route it outside the fuselage back to the fuselage rear along the bottom of the aircraft You can also run it out the top to the verti cal stabilizer where it can be attached using a small rubber band and a small t pin to hold the antenna wire on the tail CONTINUED Step 10 Use radio packing foam to install the receiver and bat tery With a sharp hobby knife cut a solid layer of foam the size of t
42. l Drill bit 1 8 Standard pliers Step 3 Cut out the pushrod exits for the rudder one on the left side of fuselage and elevator one on each side of the fuselage using a sharp hobby knife Use care not to cut too large of an opening Step 4 To make up the rudder pushrod locate one of the 12 threaded rods one of the 6 threaded rods one of the wooden pushrods 23 3 4 two clevises 2 4 40 nuts and two clevis Clips and two pieces of heat shrink tubing Step 5 Using either a pencil or a felt tipped pen make a mark 1 1 2 from each end of the hardwood pushrod 37 38 Section 14 Assembling and Installing the Rudder Elevator and Throttle Linkages CONTINUED Step 6 To determine the approximate length of the pushrod Step 9 Mark the non threaded end of the rods where the bend temporarily tape using masking tape the long 12 threaded will be made in reference to the marks made on the wood rod to one end of the wooden pushrod Thread a clevis on the pushrod the 1 o mark made in step 5 threaded end approximately 10 turns Repeat the process with the short 6 threaded rod and attach clevis to the threaded end of the rod Make sure the metal rod is clear of the tape near he marks made on the wood pushrod as you will be marking the rod once the length is determined o NU p sd Step 10 Disassemble the pushrod Remove the clevis and tape Step 11 Drill a 1 8 hole through the
43. l bit 5 32 Shock absorbing wires 2 Nuts 4 e Black shock absorbers 2 pr Step 1 Attach the axles to the aluminum landing gear using the Note You can use a Moto tool to cut the extra length off the lock nuts provided Slide on two nylon spacers then the wheel axle Be very careful not to get the axle too hot during Use the wheel collar to hold the wheel on the axle the cutting process Take it slowly Remember to cut the axle in such a manner that the Cub wheel hub will mount to the wheel without binding on to the axle Note Its always good idea to use Threadlock on the wheel collar set screws to keep them from coming loose Step 2 Locate the five hole indentations in the bottom of the fuselage directly underneath the landing gear block installed in the fuselage Use a sharp hobby knife to carefully remove the covering over the pre drilled holes Section 9 Installing the Main Landing Gear and Wheels CONTINUED Step 3 Trial fit the aluminum landing gear onto the fuselage Step 5 Locate the two wires that will be used to make up the positioning it over the pre drilled holes Use the aluminum shock absorbing system found on the J 3 Cub These wires are landing gear as a guide If the holes do not line up exactly mark threaded on each end Insert one nut on each wire end then and drill or file the holes so the landing gear can be bolted to insert the wires into the holes provided on the aluminum landi
44. les using the same procedure in Step 5 Use caution when drilling so the covering is not damaged Step 12 Carefully mount the rudder control horn using the same method as previously described Section 7 Mounting and Hinging the Elevators Parts Needed Tools and Adhesives Needed e Fuselage w vertical and horizontal stabilizer attached e Thin CA glue e Paper towels e Elevator halves left and right CA debonder e T pins Step 1 Locate the two elevator halves There are three hinges Step 3 After the hinges are dry check to be sure they in each elevator half Trial fit into their proper position Use the securely in place by trying to pull the elevator from the horizon T pins to make sure the hinges are installed so that half is in tal stabilizer Use care not to crush the structure Flex the eleva each surface tor half up and down to work in the hinges Step 2 Start with the left as the pilot sits in the cockpit eleva Step 4 Repeat the previous procedure for the other tor properly aligned apply thin CA glue to the hinges on both elevator half sides Wipe away any excess CA with CA debonder and a paper towel 21 22 Section 8 Hinging the Rudder and Mounting the Tail Wheel Assembly Parts Needed Tools and Adhesives Needed e Fuselage e Rudder e wheel assembly w tail wheel e Phillips Screwdriver e Thin CA glue Allen wrench provided CA debonder e 6 minute epoxy e 5
45. ling and Installing the Fuel Tank Glow and Gas Versions Step 14 Trial fit the tank floor into the fuselage forward area Some trimming may be required You will want to mount the floor so the tank fuel is centered as close to being in line with the engine carburetor as possible This is especially important for those opting for the glow type of engine installation Hint Wrap foam around tank rubber band in place and trial fit in place on the fuel tank floor to determine where centerline of tank is Then make adjustments up down of floor placement Mark location with a felt tipped pen Once you re satisfied with floor location proceed with epoxying the floor into place Step 15 Mix up 1 ounce of 30 minute epoxy and apply to the plywood tank floor edges that will contact the fuselage sides and firewall Install floor into fuselage forward area Allow the epoxy to cure completely CONTINUED Step 16 Install the fuel tubing on to the two fuel tank tubes and feed through the holes in the firewall Be sure to mark the appro priate vents now for once the tank is in the aircraft it will be dif ficult to determine which is which Hint It is sometimes helpful to use long 6 pieces of music wire to help guide the fuel tubing through the holes in the firewall Refer to photo below Note You can wait to install the fuel tank after you position and install the throttle linkage as you will be drilling a hole through the fir
46. lizer height It may be neces sary to cut off a small amount from the bottom of the vertical stabilizer to get the rudder to drop down to the proper position so the rudder and fuselage align m Step 10 Double check the horizontal and vertical stabilizer alignment It may be necessary to slightly trim balsa wood on the fuselage or tail parts with a sharp hobby knife to achieve exact alignment CONTINUED Step 11 When you re satisfied with the alignment carefully mark the position of the vertical stabilizer to fuselage with a pen cil at the junction where the vertical stabilizer meets the fuselage The pencil should make a light indentation in the covering Step 12 Remove the horizontal and vertical stabilizers from the fuselage Using a sharp hobby knife and a straight edge careful ly cut the covering at approximately 1 16 inside the lines you drew on both sides of the horizontal and vertical stabilizer Note Some covering may already be removed If necessary remove any excess CAUTION It is very important that you do Not press hard enough to cut into the wood structure as doing so could weak en the horizontal stabilizer 17 Section 5 Installing the Horizontal and Vertical Stabilizer Step 13 Mix up approximately 1 2 ounce minimum of 30 minute epoxy to attach the horizontal stabilizer to the fuse lage Slide the horizontal stabilizer back into the fuselage Epoxy will have to be worked
47. m Step 29 Repeat the process to attach the other two threaded rods to the wood pushrod Allow the epoxy to cure completely before proceeding to the next step Section 14 Assembling and Installing the Rudder Elevator and Throttle Linkages Step 32 You can adjust the clevis at either end or both in or out to make adjustments to the rudder control surface to make it centered in neutral or 0 degrees when the transmitter stick and trim switch are centered Be sure to tighten all nuts securely against the metal clevis Step 33 The elevator is adjusted in the same manner as the rudder pushrod with the exception being the elevators are split and will require separate adjustments of each clevis in out to position each elevator at neutral or 0 degrees Make sure each elevator half is at 0 degrees If the elevator surfaces are not the same it will be difficult to trim out the aircraft in flight Installing the Throttle Linkage Glow and Gasoline Parts Needed Nylon pushrod inner and outer tube 1 threaded rod 2 Z bend rod Clevis Tools and Adhesives Needed Thick CA glue CA debonder 6 minute epoxy Alternate Rubbing alcohol Alternate Paper towels Felt tipped pen or pencil Z bend pliers Hobby knife Razor saw optional 2 Rod with Z bend A Tube 1 Threaded Rodi Um Tube Clevis lu s into Servo Arm Connects to Throttle Note Its necessary to use a non conductive
48. n steps is merely a recommendation Step 1 Complete the initial construction of your Cub to the ready to fly status We strongly recommend test flight and con trol adjustment prior to detailing the Cub Step 2 Begin the detailing process with the interior detail Locate the paper template of the interior cover floor in the last part of this manual Cut out and mark the outline on a piece of 24 x12 x1 8 lite plywood Use a band saw or jig saw to cut out the lite plywood interior cover Note these are 3 pieces that make up the interior cover floor Step 3 Once you have the interior cover cut out trial fit it to the interior Trim as necessary and sand with medium sandpaper Step 4 Paint the interior cover s interior formers and walls flat black Testors TES1749 Step 5 Glue 2 3 4 x 1 4 hardwood rails on to the side of the interior formers 1 8 below the windows Put one one each side of the fuselage to support the interior cover 55 56 Section 20 Scale Detailing the J 3 Cub Step 6 Use a piece of 1 x3 8 x4 balsa to make the front seat Step 9 Mount the instrument panel to front bulkhead Install back Paint the seat back flat black and mount to the interior the wood dowel windshield braces at this point if you have not Cover Attach seat back in location as per the template for the done so See text in Section 16 Step 4 for placement of the interior cover braces Step 7 Use th
49. n to the aileron control surface dc pP P s Step 2 Thread 4 40 nut and clevis on each end of one of the threaded rods Step 3 Before mounting the linkages it s a good idea to center the wing servos electrically Connect them to the receiver if using a y harness use the aileron channel only Note If you are using separate channels for the ailerons check to make sure you connect to the appropriate channels refer to radio operating instructions for diagram Turn on your transmitter then the receiver Once the servos have moved to their electrical center you can position each aileron servo arm so that it will be approximately 90 degrees to the link age when attached Next turn off the receiver then the transmitter Step 4 To establish the length of the linkage required trial fit the control horn and linkage to the servo arm Adjustments to length are made by screwing one or both clevis in or out Be sure to securely tighten the 4 40 nuts against the clevis to pre vent the clevis from backing out The control horn should be positioned so the holes that the clevis connects to are over the centerline of the hinge line of the control surface Note For normal applications the clevis is connected to that portion of the servo arm that points to the wing tip see below Section 3 Installing the Linkages Step 5 Once you re satisfied with the control horn locati
50. ng the fuselage gear Retain with a nut on the other side Step 4 Bolt the landing gear to the fuselage with the included Note Use Threadlock to keep the nuts and bolts from hardware Insert a bolt through the aluminum landing gear and coming loose secure it with a blind nut inside the fuselage Note Be sure to use Threadlock on the bolt nuts Step 6 The round black shocks cut in half to allow mounting to the wire can be epoxied to the shock absorbing wires at a later time Refer to the 3 view for the position Allow the epoxy to cure completely 25 26 Section 10 Installing the Engine Glow e Fuselage e Phillips screwdriver e Rubbing alcohol e Metal motor mount e Small round file e Paper towels e Mounting hardware e 6 or 12 minute epoxy e Drill e Engine e Epoxy brush e Drillbit 1 4 Step 1 Mix up approximately 1 2 ounce of 6 or 12 minute Step 3 Before you mount the metal motor mounts you will epoxy with some rubbing alcohol approximately 1 4 ounce and have to decide if the engine is to be mounted inverted what we brush it on the firewall area to seal it from fuel Allow the epoxy to recommend or side mounted Refer to the templates located in cure completely the back of the manual for the mounting hole locations for the metal motor mount in both the side and inverted position Step 4 Mark the location of the mounting holes for the metal motor mount using the template for either the side or the
51. on remember it should be a straight line from the servo arm to the control horn mark the location with a felt tipped pen or pencil Note the linkage makes a 90 degree angle at the servo arm and at the center line of the hinge line of the aileron to wing CONTINUED Step 6 Using a 1 16 drill bit drill the screw holes for mount ing the control horn Since the aileron is balsa we recommend applying thin CA glue into the aileron through the drilled holes to saturate and stiffen the balsa in the mounting area Note It may be necessary to re drill the holes after the CA has cured Step 7 Attach the control horn to the aileron using the screws provided and a plastic plate Be careful not to accidentally punc ture the covering with the Phillips screwdriver e cL Step 8 Repeat process for the remaining aileron 13 Section 4 Bolting the Wing to the Fuselage Parts Needed Tools and Adhesives Needed Left and right wing panels Fuselage Aluminum wing brace 24 1 2 long Aluminum wing brace 16 long Aluminum wing brace screws 2 large w washers and 2 small w washers e Wing attachment bolts washers 2 each Allen wrench provided in kit e Medium Phillips screwdriver e Threadlock Step 1 Locate the two aluminum wing braces the wing brace hardware and the wing attachment bolts from the hardware bag Step 2 Attach the 24 1 2 long aluminum wing brace to the
52. pushrod for the throttle linkage when operating a gasoline engine A non conductive pushrod will prevent radio interference noise from the spark plug transmitting through the pushrod and causing radio interference The included pushrod system can be used with either gasoline or glow engines CONTINUED Step 34 Its necessary to cut the included nylon pushrod to the correct length Remove the inner tube from the larger outer tube of the nylon pushrod Temporarily install the outer tube into the fusealge through the throttle opening drilled in the firewall in previous sections You will need to mark the fuselage formers where the tube will be routed into the fuselage Make sure the outer tubing of the throttle pushrod is flush with the face of the firewall Step 35 With the throttle servo arm installed and centered on your throttle servo measure 1 16 in front of the servo arm and place a mark on the outer tube Remove the outer tube and cut it off with your hobby knife or a razor saw at the mark you made 43 44 Section 14 Assembling and Installing the Rudder Elevator and Throttle Linkages Step 36 Its best if you secure the outer tube to the side of the fuselage to keep it from sliding Install the outer tube back into the fuselage Make sure the end is flush with the face of the fire wall To make sure that the outer tube is aligned with the servo arm install the inner tube into the outer tube through the firewall
53. rill e Paper towels Drill bit 1 16 e Epoxy brush e Felt tipped pen or pencil e Masking tape String 24 with a small weight on end Step 1 Locate the servo opening in the bottom of one of each of the wing halves Use a sharp knife to trim away the covering over the openings Use care not to cut away too much covering Step 3 Trial fit the wood servo blocks into the servo opening You will mount these with epoxy after you have made sure they fit and that the servo will fit into the space Some material will have to be removed inside the servo opening to make room for the servo lead at two locations Make sure there is room for the servo lead to go into the round hole made for it to pass into the wing Second you will need to trim the area of the wood servo block so the servo wire exiting from the servo case is not crimped as it passes around or under the servo to the servo lead exit Step 2 Install the recommended servo hardware supplied with your radio system onto the servos you will use for the Cub grommets and eyelets Install a servo extension lead to each of the aileron servos as well an 18 extension is recommended Secure the connectors with either masking tape or a commercial ly available connector that prevents the servo lead connectors from becoming disconnected Hint It s always a good idea to tape or secure the servo connectors and servo extension together to prevent the wires from becoming
54. rottle arm Be sure the throttle barrel is in the 1 2 open closed position Section 14 Assembling and Installing the Rudder Elevator and Throttle Linkages Step 40 Hold the inner tube next to the Z bend rod that s attached to your servo arm From the threaded end of the rod measure back 5 8 and mark the inner tube Cut the inner tube off at this mark CONTINUED Step 41 Thread the Z bend rod into the inner tube and mount the servo arm to the servo Make sure the servo arm is at a 90 degree angle to the throttle pushrod Center your transmitter s throttle stick and trim and mechanically adjust the linkage of the throttle arm of your engine to be 1 2 open closed This will be close enough to adjust the throttle electronically with your trans mitter if you have a computer radio If you do not have a com puter radio you will need to make your adjustments mechanical ly to achieve a high and low throttle in accordance with your transmitter stick Screw the clevis in or out at the throttle linkage to adjust this 45 46 Section 15 Installing the Wing Struts Parts Needed e BRight left wing panels e Pre covered right and left wing struts e Wing strut hardware package Tools and Adhesives Needed e Threadlock e Phillips screwdriver WARNING The wing struts MUST be installed before flight They are functional providing the support necessary for the wing to withs
55. s 6 and the two 12 rods as marked in Step 25 Trim so the rods are 1 8 to 3 16 long to fit into the holes of the wood pushrod with out the ends extending out of the hole on the other side of the wooden rod Step 24 Adjust the length of the rods on the wooden pushrod if necessary to allow for a 90 degree bend to be made in the non threaded portion of the rod that will be attached to the wood pushrod 41 42 Section 14 Assembling and Installing the Rudder Elevator and Throttle Linkages CONTINUED Step 27 Trial fit each threaded rod onto the wood pushrod Step 30 Insert the elevator pushrod assembly the long 12 When you re satisfied with the fit mix up approximately 1 4 threaded rod first into the fuselage so the threaded rod exits the ounce of 6 minute epoxy and apply to the hole and grove then elevator pushrod exit holes Screw on a nut and clevis approxi insert the rod Wrap the area where the rod contacts the wood mately 10 turns Fasten the clevis to the elevator pushrod con with included nylon string trol horns Remember to attach the clip for the clevis Step 28 Before the epoxy is cured slide a piece of heat shrink tubing over the wood pushrod and threaded rod Use a heat gun to shrink the tubing in place Step 31 Center the elevator servo and position the servo con trol arm so it is 90 degrees to the pushrod linkage the 6 rod end Attach the elevator pushrod clevis to the elevator servo ar
56. t le and adjust the idle and low speed needle so that a consistent idle is achieved Step 3 Before you fly be sure that your engine reliably idles transitions and runs at all throttle settings Only when this is achieved should any plane be considered ready for flight 59 60 AMA Safety Code Official AMA National Model Aircraft Safety Code Effective January 1 1999 Model flying MUST be in accordance with this Code in order for AMA Liability Protection to Apply General 1 will not fly my model aircraft in sanctioned events air shows or model flying demonstrations until it has been proven airworthy by o will not fly my model ving been previously successfully flight tested higher than approximately 400 feet within three miles of an airport without notifying the airport operator will give right of way and avoid flying in the proximity of full scale aircraft Where necessary an observer shall be utilized to supervise flying to avoid having models fly in the proximity of full scale aircraft Where established w use and will not willf careless reckless and ill abide by the safety rules for the flying site and deliberately fly my models in a or dangerous manner At all flying sites a straight or curved line s must be established in front 0 which all flying takes place with the other side for spectato 5 Only personnel
57. tand various flight maneuvers Do Not fly the aircraft without the wing struts installed Step 1 Locate the two pre covered wing struts braces and associated hardware package of screws nuts and clamps Step 2 The mounting points for the wing struts are located in the wings and the bottom of the fuselage aft of the landing gear These mounting points already have the blind nuts installed However the covering material will have to be carefully trimmed away using a sharp hobby knife Step 3 Start with the fuselage and locate the four mounting points located aft of the landing gear on the fuselage bottom two on either side of the fuselage Use a sharp hobby knife and trim out the opening Step 4 On each wing panel locate the four mounting points two pair parallel to each other near the servo opening for the aileron servo If you look carefully at the covering you will see the square hardpoints with the hole through the covering Open the holes using a sharp hobby knife Step 5 We suggest mounting the two braces to each wing strut first using the hardware provided Do not tighten the nuts down completely yet as you will want to be able to make minor adjust ments when the strut is attached to the fuselage and wing Section 15 Installing the Wing Struts Step 6 After the two wing struts are assembled mount each wing strut to its wing panel noting the orientation of the part of the strut that will mount to the
58. tely 87 mph and cruise is in the area of 73 mph The J 3 Cub service ceiling is around 12 000 feet with an approximate range of 220 miles at cruise he Piper J 3 Cub is 22 4 long has a 35 2 1 wingspan and measures 6 6 in height A military version with some minor changes was designated the 1 4 by the U S Army Air Corps The L 4 saw service during World War II If you encounter difficulty in any construction sequence please feel free to contact one of our technicians We stand ready to provide any assistance we can concerning the construction of your J 3 Cub You can contact us at Horizon Hobby Inc 4105 Fieldstone Road Champaign IL 61822 877 504 0233 www horizonhobby com Warning An R C aircratt is not a toy If misused it can cause serious bodily harm and damage to property Fly only in open areas preferably AMA Academy of Model Aeronautics approved flying sites Follow all instructions included with your radio and engine Additional Required Equipment Radio Equipment 4 Channel minumum 5 Servos JRPS531 or equivalent Standard 600 1100 receiver battery pack Y Harness or servo extension Recommended JR Systems JR 400EX JR 421 EX JR XP652 JR XP783 388 JR XP8103 JR 10X JR PCM10SX Engine Requirements 1 08 1 48 2 cycle engines 1 20 1 80 4 cycle engines 23cc gasoline engine Recommended Recommended 2 Cycle Engine 4 Cycle Engine MDS 1 48 Saito 1 20 1 80 Moki 1 35
59. the fuselage sides The fore and aft portion are trimmed so the cabin overhead window fits snug against the top of the cabin Step 2 The side windows will have to be cut apart Trial fit each window to the fuselage to see how much area to trim You want to have enough material so the side window will mount to the fuselage securely Step 3 When you are satisfied with the fit run a small bead of canopy glue around the side windows Tape in place and allow the glue to dry Step 4 Trial fit the front windshield again to make sure it will fit properly Before installing the front windshield you can mount the front wood dowel windshield braces Mark the center of the front cabin former lightly with a pencil The wood windshield braces will be positioned from the edge of the instrument panel on the fuselage to approximately 1 4 either side of the center mark you made on the front cabin former refer to 3 view Use thin CA to mount the braces If you plan on installing an instru ment panel you may want to do so at this time then mount the wood windshield braces Section 16 Installing the Windshield Side Windows and Cabin Overhead Window Step 5 After you are satisfied with the fit of the windshield run a bead of canopy glue around the windshield and mount to the fuselage Hold in place with masking tape until the glue dries Step 6 After the glue is cured use wood screws to secure the front windshield to the fusela
60. to scale Caution Do not get epoxy into any of the pre drilled holes Step 3 Trial fit the plywood motor mount onto the firewall Hold the plywood motor mount flush with the top and sides of the fuselage Make sure the motor mount holes line up with where the round Phillips head machine screws will be installed Section 11 Installing the Engine Gasoline Step 4 To mount the blind nuts inside the fuselage behind the firewall use a piece of music wire to guide the blind nut into position then use a screw to tighten the blind nut into the ply wood firewall You can also reach inside the fuselage if your hand is not too large Step 5 With the screws temporarialy holding the plywood motor mount in place drill out the throttle and fuel line openings using a 1 4 drill bit It will be easier to drill out these holes now than to wait until after the motor has been mounted to the ply wood motor mount After the holes have been drilled remove the plywood motor mount Step 6 The plywood motor mount replaces the metal one on the G 23 motor and is used to mount the motor to the firewall Remove the metal motor plate from the G 23 and replace it with the plywood motor mount using the flat head screws provided Note The holes on the back side of the plywood motor mount are counter sunk for the flat head screws The bolt pattern of the counter sunk holes matches the screw locations on the G 23 engine CONTINUED When mounted t
61. to the engine Step 1 Locate the tank parts Decide if you will make up a glow or gas fuel tank Step 3 Slide the smaller of the two plastic caps over the brass tube on one side of the stopper so the small peg faces away Note If you install a Zenoah G 23 Gasoline engine use the from the stopper and toward the inside of the fuel tank The larg red gas stopper and the black gas tubing Do not er cap is placed on the other side of the rubber stopper so the use the black glow stopper or clear glow fuel tub raised center faces away from the rubber stopper ing with a gasoline powered engine as they are not compatible with gasoline operation 30 Section 12 Assembling and Installing the Fuel Tank Glow and Gas Versions CONTINUED Step 4 Locate the other long brass tube and bend one end Step 7 Locate the fuel tubing clear for glow engines or black for using your fingers as shown below This tube will be the fuel gas engines This tubing will be used for the fuel pickup inside tank vent tube the fuel tank Insert the clunk into one end of the fuel tubing Step 5 Slide the bent tube into the caps and the other open Step 8 Install the open end of the fuel tubing onto the fuel hole of the stopper as shown below pickup brass tubing 4 Step 6 Note the orientation of the tubes and plastic caps Make Step 9 Insert the 3mm screw into the center hole of the larger sure the vent tube is positioned correctly as shown
62. unplugged while inside the wing Section 2 Installing the Aileron Servos Step 4 Once you re satisfied with the fit of the aileron servo in the aileron servo bay proceed to epoxy the wood servo mounts into the aileron servo area Mix up approximately 1 2 ounce of 6 minute epoxy apply to the wood servo mounts and install into the aileron servo bay Allow the epoxy to cure before proceeding with the next step Step 5 While the epoxy is curing mount the servo arm onto the servo after you have trimmed three of the arms off as shown CONTINUED Step 6 Once the epoxy has cured you can begin to mount the servo into the wing You will want to first run the servo lead and servo lead extension through the wing and out the wing root Step 7 We recommend using a piece 24 of the string pro vided with a nut from the hardware bag attached to one end Drop the nut through the opening in the wing root and let it slide through the wing exiting at the aileron servo bay area Once you have run the string through you can remove the nut and tie the string to one end of the servo extension lead Fish the servo leads back through the wing by pulling the string out Secure the servo lead with a piece of masking tape to prevent it from falling back into the wing Section 2 Installing the Aileron Servos CONTINUED Step 8 Trial fit the servo into the aileron servo bay You will Step10 Using a 1 16 drill bit drill the servo screw
63. ust gas from the engine The MDS 1 48 can use the Pitts style muffler as used by the Webra 120 For the Zenoah G 23 a template for the engine and muffler will have to be used to cut out portions of the cowl Step 5 After you have marked the mounting hole position for attaching the cowl to the fuselage drill the holes using a 1 8 drill bit 4 51 52 Section 17 Attaching the Cowling CONTINUED Step 7 After the openings have been marked on the cowl Step 8 Remount your engine and install the cowl attaching it remove the cowl from the fuselage and proceed to rout out the to the fuselage using the screws provided openings marked using a moto tool Note On some engines where the carburetor is not easily accessible a fueling valve can be used Dubro s DUB334 is an excellent choice and should be avail able at your local hobby shop Section 18 Control Throw Recommendations The following control throw recommendations offer positive response and are a good place to begin setting up the aircraft for flight After you have become more familiar with the flight characteristics of the J 3 Cub adjust the control throws to meet your flying style Aileron 1 up 1 down Elevator 1 1 up 1 1 down Rudder 2 Right 2 Left 53 54 Section 19 Balancing the Hangar 9 1 4 Scale J 3 Cub An extremely Important step in preparing an aircraft for flight is ensuring it is properly balan
64. with gaseous other than air enter their internal combustion erate models with extremely hazardous fuels such as those containing tetranitromethane or hydrazine 10 11 will not operate models with pyrotechnics any device th e of any kind including but not limited to burns or propels a projecti at explodes rockets explosive bombs dropped from models smoke bombs all explosive gases such as hydrogen filled balloons ground mo devices launching a proj ets flown i authorized m accordance with or those permanently attac or Air Show Team use as defined by AST Advisory com document available ted 6 The only exceptions permitted are rock the National Model Rocketry Safety Code hed as per use also those items ecti rom AMA HQ In any case models using rocket motors as primary means of propulsion are limited to a maxi mum weight of 3 3 poun Craft is defined as carry a human being will not operate have obtained a specia AMA President and Exec ion s imposed for such consume alcoh y model will no tion in a Radio Control 1 check before the first flig become a qualified flier will perform my initial t aircra y turbo apply to ducted fan models using piston e ds and a G series motor Note A model air with or without an engine not able to j

1/4 Scale Cub Manual - Hangar-9

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