User Manual - Modeltronic
Contents
1. 2005 RCE 30 User Manual Slow cutoff and remove small pieces of tape and put the Blades back on the Glasses Once the Blades hangs 100 horizontal it s balanced and ready to connect to your Helicopter 2005 RCE Repair Hints amp Tips 31 Ready to Go Once everything is checked and re checked you are ready to take your heli for a maiden light 2005 RCE 32 User Manual Once again check the Balance of the Heli refer to Adjust the Balances with the Battery section on Balancing Tips Extend the Transmitter Radio antenna to full length and switch on the transmitter Please NOTE Always make sure that the Channel 1 Throttle Position is set to 0 Connect the Heli Battery to the Receiver and ESC units 2005 RCE 33 Repair Hints amp Tips isn t this FUN And there we Explosion Drawing 9 H 7 H H 4 fo 4 5 4 H H H H H H H H I D 4 H H H LI 1 H D H 4 H H H 4 LI H n t5 u to o E T T T I lt ko I r ile T T LU u u u 0 0 LI2. RCE 2005 34 User Manual 10 Individual Spares Part List 2005 RCE Individual Spares Part List 35 x Double Hole Tie Bar Short EH 2 EH 3 EH 4 Rotary Sleeve Spindle 3x6x2 5mm EH 5 Main Rotor Ball Bearings 4 2 x Rotor Head 2005 RCE 36 User Manual 10 EH 6 En 7 EH 8 EH 9 EH 10 C Besson m _ Internal Control Panel Double Hole Tie Bar Long External Control Panel Stabilizing Wing Beam Internal Tilting Pan lt 2005 gt RCE Individual Spares Part List 37 j JJ Time ii 11 EH 11 Single Hole Tie Bar 12 EH 12 Servo Hole Tie Bar 13 EH 13 Stabilizing Blades 14 Servo 15 EH 15 Main rotor Motor Kit 2005 RCE 38 User Manual ee ____ i EH16 PcCB Box Lid k lt EH 18 Casing Canopy EH 19 Battery EH 20 Foot Pole Support 2005 RCE Individual Spares Part List 21 22 23 24 25 EH 21 EH 22 EH 23 EH 24 EH 25 Main Sha t Driving Wheel Gear Battery Holder Casing Pole Support Foot Pole Support 39 2005 RCE 40 User Manual No Pareno Description _ Tail Stabling Wing Tail Fasteni
3. The Left hand Control controls the Rudder feature proportionally in the horizontal position This feature is necessary to turn the helicopter with the nose in the direction in which you wish to fly This takes place through the control of the small rear Tail Motor Lever to the Left Nose Left Tail Right Lever to the Right Nose Right Tail Left Channel 3 2005 RCE Know your Radio Transmitter 7 The Right hand Control controls the Nick feature forward Backwards in the Vertical position Lever UP Helicopter nose Down and Flies forward Lever DOWN Helicopter Nose up and fly Backwards Channel 4 2005 RCE 8 User Manual The Right Hand Control Roll Feature proportionally in the Horizontal position This feature is necessary for flying the helicopter side ways The nose of the Heli still points forwards Lever to the Left Helicopter inclines to the Left Lever to the Right Helicopter inclines to the Right Heli Trim and Pre Flight Setup Put the helicopter on a flat level surface Fit the battery pack 2005 RCE Heli Trim and Pre Flight Setup 9 Turn Rotor head so that Blades are horizontal with the tail boom Put your 2 fingers under the screws that hold the rotor blades and lift the heli off the table Adjust the battery position until the heli lifts of evenly The Landin
4. Colco Thunderbird Concept II User Operators Manual This material is Copyright c 2005 RCE Solutions Capetown South Africa Spares ordering and Questions Visit http www rchq co za Contents Table of Contents Part Part Il Part III Part IV Part V Part VI Part VII Part VIII Part IX Part X Part XI Foreword Introduction Safety Instructions Know your Radio Transmitter Heli Trim and Pre Flight Setup Adjust the Balance with the Battery Gyro Setting Service and Cleaning Repair Hints amp Tips Explosion Drawing Individual Spares Part List PP Joy Index 2005 RCE N ND o 12 14 16 17 33 34 42 User Manual Introduction Dear Customer Thank you for purchase the Thunderbird Colco Concept II Mini RC Helicopter For more information about our product please visit the RC Headquarters on the internet at http www rchq co za Online spares can be ordered and Question can be ask and will be answered by our group of RC Heli pilots A Online price list is available and spares can be ordered and will be available within 48 hours after ordering if we have stock Enjoy the Thunderbird Mini RC Helicopter RCE Solutions Cape Town South Africa Cornelis van Rensburg Crashbandit Safety Instructions Read the operation instructions through completely before commissioning This include important information for correct ope
5. Install the software automatically Recommended C Install from a list or specific location Advanced Click Continue Installation until Done to continue When Complete with the Driver Installation go to Start Programs Parallel Port Joystick and PPJOYCOM to Execute the Com Driver for the Joystick 2005 RCE PP 55 al PPJoy Serial stream to Virtual Joystick 1 Jaystick device Virtual joystick 1 Successfully opened joystick Serial port Successfully opened part Baud 18200 v state Disable Data bits HIS state Enable 1 k F Parity None LTS flow False Stop bits OSA False Serial protocal Zhen Hua 5 byte protocol gt Waiting for stream Beep on serial input debug Load ini Save ini Record Cancel Select the Serial Port and Select THEN HUA 5 BYTE PROTOCOL at the Serial Protocol Drop down Note the Message Waiting for Stream Init Plug the Connector into your Radio TX Do not Switch the Radio ON NOTE The Message will change to Read Serial Stream if the connection is successful If not remove the Cable and try a Different COM port Minimize the PPJOYCOM Window and Start FMS NOTE This window must be active to allow the Radio TX to work with FMS Once in FMS go to Control Panel and Select Joystick Interface and Click on Mapping Calibr
6. right Now flick the helicopters tail away from you counter clockwise The tail rotor should speed up rev to try to prevent this movement The size of this Rev is determined by the gain control 2 Jscrew the gyro Do not fiddle with this screw It should be set Ok Doing so will also affect the mixing ratio and you will have to start adjusting again from the top of this chapter Now Still holding the helicopter throttle up to hover rpm the heli wants to fly up out of your hand Feel again for any Forces exerted on your hand If there are no strong forces in the roll or yaw axis and the tail seems to be neutral briefly let go of the helicopter If you have setup your helicopter correctly it will fly hover pretty much in the same place you left it It may however climb upwards in which case you must reduce the throttle slightly Service and Cleaning Clean the Helicopter and Rotor blades after each flight Disconnect the battery from the Receiver and ESC Check all screw connections for tightness after each flight 2005 RCE Repair Hints amp Tips 17 8 Repair Hints amp Tips Tail Rotor Motor and Gears Here are a Few Images I took to demonstrate how to assemble the Thunderbird RC Helicopter Put the Small Capacitor Legs through the Little hole at the Back of the Tail Rotor Motor Screw the Rail Rotor Motor to the Tail Holder 2005 RCE 18 User
7. the software Getting the Thunderbird Radio to Work with 2005 RCE PPJoy 53 FMS Follow the Instructions on How to Install PP Joy Plug the Serial Interface Received with your Heli into a Free Serial port on your Computer DO NOT PLUG IT INTO THE RADIO TX YET Go to Start Control Panel Parallel Port Joysticks PPJoy Joystick and Gamepad configuration utility vO This utility allow vou to configure and remove joysticks and gamepad connected to parallel ports VE FPJav is Copyright Deon van der Westhuvsen 2002 2004 Configured joysticks Remove Mapping Timing Options Done Click on ADD 2005 RCE 54 User Manual Configure new controller Controller configuration Parallel port Controller type Interface type Controller number Controller sub type Virtual javsticks Virtual joystick Virtual joystick Controller 1 Cancel Select at the Parallel Port Drop Dow Virtual Joysticks and Press ADD and the DONE Your Operating System will Install the Necessary Software for the Virtual Joystick Found New Hardware Wizard Welcome to the Found New Hardware Wizard This wizard helps vou install software for Parallel Port Joystick 1 ar j 2 If your hardware came with an installation CD 9 or floppy disk insert it now What do want the wizard to do
8. Manual Solder the Wire to the Motor Please note the Polarity Red wire Black Wire Add the Tail Rotor Gear to the Tail Fastening Sleeve Spindle 2005 RCE Repair Hints amp Tips 19 The Tail Rotor Motor assembly are completed Please note the Distance between the Motor and the Rotor Gear Do not tighten to tight Leave a Little cap between the Motor and the Gear SERVOS Connect the Servo Tie Bars to the Servo Horn 2005 RCE 20 User Manual F j Er Connect the Servos with the Screw supplied to the Main Frame Servo Holders Receiver Speed control and Gyro Add the Speed Control and Receiver in the PCB Box 2005 RCE Repair Hints amp Tips Connection Diagram for the Speed Control Gyro and Receiver is as Follows 21 2005 RCE 22 User Manual Receiver COLCO nm ina HT P 0 3 Nick Forwards Back Wards Servo Roll Left Right Servo _ Speed Controller To Tail Motor To Main Motor lt E A Yellow or White To Battery B Red C Brown or Black Main Motor amp Main Gear Add the Main Rotor Motor Give Out cove to the Main Motor Be careful not to put the Cove over the Ventilation Holes on the Motor 2005 RCE Repair Hints amp Tips 23 Use the Supplied screw
9. am Folder _Skip This gt Existing Folders AccessOnes Administrative Tools Gadwin Systems Games Microsoft Plattorna SOK October 2002 Farallel Fort Joystick Startup Back Cancel 2005 RCE 46 User Manual This screen allows you to select the Program Folder on the Start Menu where the PPJoy files will be installed Accept the default folder recommended or choose a new folder Click on Next EET Ready To Install Setup now has enough information to start installing Parallel Port Joystick Click Back to make any changes before continuing Click Cancel to exit Setup lt Back Cancel This screen confirms that setup is ready to start the PPJoy installation Click on Next Setup Copying file Files Parallel Port Joystick PPJauL Ta exe Ga 1 i This installation was created with Installer VISE from Mind vision Software http Pen cam This dialog shows the installation progress During this process Windows 2000 or Windows XP may show Unsigned Driver warning messages Please click on Yes Windows 2000 or Continue Anyway Windows XP when these warning are shown 2005 RCE PP Joy 47 sb Finished Setup is complete and Parallel Port Joystick is now installed Click Close to end the Setup lt Back Parce The PPJoy setup is complete Press C
10. ation The Default setup should look like the Image Below 2005 RCE User Manual Mapping Calibration Mappin Channel Inv Rudder Elevator Aleron Throttle Tall Mick Fall Pitch To calibrate your transmitter click on Calibrate Calibrate Cancel Remember to Calibrate you TX before lying attempts Press the OK Button M M MM M M M M TATIANA You are ready to fly the Heli on FMS Enjoy 2005 RCE
11. er was created using the Shareware Developer version of Installer VISE fram Mindvision Software 4 Far licensing information contact MindYision Software salesteimindvision com http han mindvision cam IF need technical support with the product being installed contact the shareware developer Software Copyright 1993 2000 Software All nights reserved worldwide Use of this software to distribute commercial software Is strictly prohibited Please report violations to Mind ision Click on this dialog to continue The installer for PPJoy was created using Installer VISE from Mind Vision Software For more information on Installer VISE contact Mind Vision Software 5901 North 58th Street Lincoln NE 68507 Voice 402 323 6600 Fax 402 323 6611 E mail mindvision mindvision com http www mindvision com If you are a shareware or freeware author you may use their installer free of charge to distribute your products Press any key or click on the Dialog to continue Driver Signing Warning Your system does not allow unsigned device drivers to be installed Please enable the installation of unsigned drivers then click on OK to continue Click on Cancel ka abort the installation See the PPJoy documentation Far more information ca 2005 RCE 44 User Manual If you get this warning it means that the PPJoy setu
12. es roll or yaw hard it is not set up right and you will never be able to fly it properly You will be fighting it every second you fly Adjust the Balance with the Battery A very important aspect for flying the Thunderbird Helicopter is to make absolutely sure that the Balance Also refer to as the CG Centre of Gravity is set correctly on the Helicopter Incorrect Balancing can lead to a few problems when flying Use the Battery to Adjust the Balance of the Heli Set the Main Blades inline with the Tail Rotor Boom Lift the Heli in the Middle on the Fly bar beam with one hand 2005 RCE Adjust the Balance with the Battery 13 NV The following Picture show that the Balance is to far Back and need to be adjusted forward Move the battery forward to make the Heli hangs level This can lead to a broken Tail rotor as soon as you try to lift up due to the Heavy weight to the back The next picture show the Ideal Balancing of the Helicopter When holding at the Fly bar beam the Helicopter hangs horizontal in the Air 2005 RCE 14 User Manual Gyro Setting Adjustment Centrifugal System The helicopter is equipped with a Centrifugal Gyro System This system compensates the rotary movements of the helicopter fuselage which arise through the rotating motor The Helicopter remains stable in the desired light direction This feature has to be adjusted before flyi
13. g Device Manager Hardware Protiles in Hardware profil s provide way for to set up and store different hardware configurations Hardware Profiles Windows XP 2005 RCE System Properties Windows 2000 49 After clicking on the Hardware tab your screen should look like one of the two screens shown above Now click on Driver Signing 2005 RCE 50 User Manual Driver Signing Options Tell me why this testing is important Make sure that either Warn or Ignore is selected Then click on OK Opening the PP Joy Application Applet This document describes how to open the PPJoy Control Panel applet The PPJoy applet is used to add and remove joysticks that are plugged into the Parallel Port 2005 RCE PP Joy 51 Windows Catalog ty Windows Update Programs k Documents Settings e Network Connections T Printers and Faxes Taskbar and Start Menu Search a Help and Support First click Start on the Taskbar then Settings and finally on Control Panel This will open the Control Panel Control Panel File Edit View Favorites Tools Help Accessibility Add Hardware Add ar Administrative Date and Time Display Folder Options Options Remo Tools gt 9 gt 4 Game Internet Keyboard Mouse Network Parallel Port Controllers Options Connection
14. g gear lifts of level with the table Turn on transmitter ALWAYS FIRST Plug in battery Set the TX trims so that the Swash plate is level Make Sure it is level with the surface the heli is on 2005 RCE 10 User Manual Loosen the screws on the fly bar paddles and align them to be exactly level Even a slight up or down angle on the fly bar paddles will affect the flying characteristic Make sure the fly bar lengths are exactly the same on both sides of the rotor head Slight length differences Will cause vibration rod 2005 RCE Heli Trim and Pre Flight Setup 11 Tighten the screws that hold the blades to the rotor head not too much just a little The blades should be able to move but should not fall slide out of position under their own weight If the blades are loose they do right themselves by centrifugal force but I do not like the vibration it causes until they are aligned Now rotate the whole rotor head assembly by turning the main gear through 360 degrees Ensure the fly bar paddles remain exactly level through the entire rotation 2005 RCE 12 User Manual If it does not re adjust the trims and fly bar paddles until it does You might have to redo this a couple of times to get it right If all is set up correctly and you let go of the heli it should hang reasonably still in the air If the heli do
15. ing 4 Make sure that Warn or Ignore Is selected 5 Click on DK b Click on DK During installation when You see a warning message stating that Parallel Port Jaustick ar Parallel Port Joystick Bus has not passed Windows Logo testing please click an Continue Anyway G lt Back Cancel 2005 RCE PP 45 This screen may contain important information in addition to the PPJoy documentation Please read it carefully Click on Next once you are done Choose Destination Location Setup will install Parallel Port Joystick in the following directory To install to this directory click Next To install to different directory click Browse and select another directory ou can choose not to install Parallel Port Joystick by clicking Cancel to exit Setup Destination Directory F Program Files Parallel Port Joystick Browse Space Required 1448 K Space Available Z75424 lt Back Cancel This screen allows you to choose an installation directory for PPJoy This is where the PPJoy documentation and source driver files will be kept Accept the default location recommended or choose a new directory Click on Next Select Program Folder Setup will add program icons to the Program Folder listed below au may tupe a new folder name or select one from the Existing Folders list Click to continue Skip This gt Progr
16. lose to finish setup Changing the Driver Signing Windows 2000 and XP have a new feature that controls the installation of unsigned device drivers There are three settings for Driver Signing e Block This will prevent the installation of unsigned drivers e Warn This will prompt the user whether to install an unsigned device driver or not e Ignore The system will install unsigned drivers without prompting the user The PPJoy device drivers are unsigned and you will need to set your system to Warn or Ignore The rest of this document describes how to do that Unsigned device drivers are drivers that are not certified and digitally signed by Microsoft 2005 RCE 48 User Manual Open My Co Explore Search Manage Network Drive Disconnect Network Drive Create Shortcut Delete Rename Properties They may impair your system performance It is up to you to decide if you want to take the risk or not First locate the My Computer icon on the desktop or in Windows Explorer Right click on the My Computer icon and select Properties System Properties E System Restore Automatic Updates Remote General Computer Mame Hardware Advanced Add Hardware Wizard Add Hardware Wizard Device Manager The Device Manager lists all the hardware devices installed i on your computer Use the Device Manager to change the properties of any device Driver Signin
17. ng Sleeve spindle Tail Rotor Gear Wheel EH 30 Tail Rotor Ball Bearing 2005 RCE Individual Spares Part List 41 i il 2 32 33 34 CLC II Electron Timing R144 IDF Receiver 34 EH 46 PG 03 Gyro 2005 RCE 42 User Manual 11 No PartNo Description NN EH 49 Training Frame EH 50 Tail Rotor Motor Give Out Cove EH 51 Main Rotor Motor Give Out Cove PP Joy This document describes how to install PPJoy on a new system If you are installing PPJoy on Windows 2000 or XP please make sure that You are logged in as Administrator or another user with Administrative privileges on the local machine Your system allows the installation of unsigned drivers See Changing the Driver Signing settings for more details First extract the contents of PPJoySetup zip to a temporary folder Double click Setup exe to start the installation After the installation is done you can delete the files from this temporary folder Tf you are using WinZip or a similar utility you may be able to simply double click on the downloaded zip file and click on YES OK to run Setup 2005 RCE PP Joy 43 Parallel Port Joystick Setup Starting Parallel Port Joystick Setup Please wall Please wait while the PPJoy installation prepares itself It should only take a few seconds This install
18. ng is commenced Proceed as follows e Put the helicopter on a Level open Area e Centre the channel 2 Trim slider Move it to the centre position 2005 RCE Gyro Setting 15 e Connect the Battery to the Helicopter and wait approx 2 seconds Automatic setup is Carried out e Hold the helicopter by the tail boom behind the landing gear Increase the throttle and allow the main blades to start rotating at a fair pace where it feels as if it want s to lift off out of your hand Check to see that the tail motor starts spinning too Feel whether the helicopter is trying to except a sideways force on your hand If the heli s tail wants to swing anticlockwise turn the gyro mixing control 1 screw clockwise 2005 RCE 16 User Manual This will increase the speed at which the tail motor spins proportionally to the main rotor and will counter the tail s anti clock wise rotation If the tails want s to swing clockwise turn the setup mixing screw counterclockwise this will reduce the speed at which the tail rotor spins proportionally to the main rotor The idea is to set the speed of the tail rotor just right so that the helicopters tail does not want to rotate in any direction but remains neutral in flight If the mixing is not correctly setup the gyro will try to correct the tail too much This will shorten the life of your tail motor drastically Take time to get it
19. not toys For this reason children and young people should always be supervised by adults when operating 3 Know your Radio Transmitter RC Helicopters come in different modes to fly in Mode 1 and Mode 2 Personally I think mode 2 is the easiest mode to fly any RC heli in But that s a personal decision and the mode that your comfortable with is the correct mode for you Very Important Always switch on the Radio first and then connect the accumulator Battery to 2005 RCE User Manual the Heli Make sure that the throttle is at 0 speed Lowest Position Let see the functions of the Channels Sticks on the Radio Transmitter F 2 Forward Nose Down Throttle 100 Roll Right Nose Right Roll Left Nose Left Backwards Nose Up Servo Reverse This is a Quick overview of the Functions for each channel on the radio With the thunderbird we only use 4 Channels due to the fact that the TB is a Fixed Pitch Heli Channels 5 and 6 are not occupied and are not required for flight operation Channel 1 2005 RCE Know your Radio Transmitter 5 The left hand control aggregate control the rotor speed proportionally in the vertical direction This is the only aggregate with a Snap in feature for maintaining the rotor speed during flight Lever DOWN 0 Speed Lever UP 100 Speed Channel 2 2005 RCE 6 User Manual
20. p application thinks your computer will not allow the installation of unsigned drivers Please see the section Changing the Driver Signing settings for details If you are sure your settings are correct then press OK to continue with the installation If you press Cancel the installation will stop 4d welcome Welcome to the Parallel Port Joystick Setup program This program will Install Parallel Part Joystick on your computer It 12 strongly recommended that you exit all Windows programs before running this Setup program Click Cancel ta quit Setup and then close any programs you have running Click Nest to continue with the Setup program WARNING This program protected by copyright law and international treaties Unauthorized reproduction or distribution of this program any portion of it may result in severe civil and criminal penalties and will be prosecuted to the masimurm extent possible under law lt Back Cancel Click on Next Important Notes The installation must copy and Driver files to your Windows directory in order For the product to function The drivers shipped with this package are not signed Windows must be set to allow the installation of unsigned drivers To change or venty the Driver Signing settings 1 Right click on My Computer and click an Properties 2 Click on the Hardware tab in System Properties 3 Click en Driver Sign
21. ration We do not take any responsibility for personal injury or damage property caused by incorrect handling or non observance of the safety instructions To maintain this status en ensure safe operation the user must comply with the safety instructions and warnings contained in these instructions Do not leave chargers and connected battery s in operation unattended Chargers and accessories should be kept out of reach of children It s not toys Avoid Charging operation under adverse ambient conditions These can lead to damage to sensitive electronics on the inside of the charger and thus to possible danger for the user Adverse ambient conditions are Excessive humidity gt 75 relative condensing Wetness and dampness petrol Dust or combustible gasses vapours or solvents excessive ambient temperature gt approx 40 C When charging battery s always observe the charging regulations and the battery manufacturer concerned 2005 RCE Safety Instructions 3 Never touch the charger with moist or wet hands There is a risk of a fatal electric shock The charger is licensed for operation on main sockets with alternating current in the household 220 230 V 50 60hz and in dry rooms Remove the battery s from charging devices is not in use When operation a Model aircraft Heli or Airplane you are responsible for actions and any consequences Remote controlled model aeroplanes are
22. s Joysticks b b Phone and Power Options Printers and Regional and Scanners and Scheduled Sounds and Modem Faxes Language Cameras Tasks Audio Devices 3 moe Speech System Taskbar and User Accounts Start Menu 2005 RCE 52 User Manual In Control Panel double click on the Parallel Port Joysticks icon shown highlighted This will open the PPJoy Control Panel applet Parallel Port Joystick and Gamepad configuration utility Ed a E This utility allow vou ta configure and remove gt x joysticks and gamepads connected ta parallel ports ia Configured joysticks LPT 1 Amiga 4 Player Joystick 1 LPT 1 Amiga 4 Player Joystick 2 LPT 2 SNESkey Genesis pad 1 4 6 0 and Start Remove Mapping Done This is the main PPJoy applet window From this screen you will add and remove joysticks that are connected to the Parallel Port Joysticks that connect to the Game port or USB will not show up here Fatal error Cannot open the Parallel Port Joystick Bus Enumerator Please install PPJoyBus sys First If you get this error message instead of the PPJoy applet you need to make sure that PPJoyBus sys is installed Under Windows 98 Me you need to install it yourself see Windows 98 Post Install actions Under Windows 2000 XP you need to make sure your settings allow the installation of unsigned drivers see Driver signing for more information and re install
23. s and screw the Main Motor to the Body Frame Don t tighten them yet because we need to align the Main Rotor Gear Add the Main Shaft to the Main Motor Gear and Press in the Main Frame Body Please make sure that the Bottom and Top bearings are fitted correctly before press the shaft through the Main Frame hole 2005 RCE 24 User Manual Pay attention to the clip that hold the Main Shaft in place at the Main Gear I used a Little CA glue after the pin is securely fitted Also adjust the Main Motor that the Gear is not running to tight against the Main Gear Press the gear to the top and Attach the Sur clip to the Main Shaft Head Assembly 2005 RCE Repair Hints amp Tips 25 2005 RCE 26 User Manual 2005 RCE Repair Hints amp Tips ye PEA han i ax CL a amp 5 SS sue LR i F 2005 RCE 28 User Manual Loosen the Fly bar Blades and align the 0 Horizontal and tighten them again Balancing amp Fitting the Main Blades 2005 RCE Repair Hints amp Tips 29 Use two Flat bottom glasses and put the Main Rotor Blades with head Assembly on the bottom If the Blades hang to the one side Use Electric Tape to balance the Blades
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