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LOSI Tuff COunTry XXX-SCT rTr • InSTruCTIOn manuaL
EN
preCauTIOnS
• Never touch moving parts.
• Never disassemble while the batteries are installed.
• Always let parts cool before touching.
adjuSTInG THe SLIpper
Turn the 1/4" (3mm) adjustment nut clockwise (to the right) to reduce the slip
or counterclockwise (to the left) to increase the slip.
GearInG
Your vehicle has been equipped with the optimal gearing for the stock platform. It offers an
ideal balance between speed, power and efficiency. Should you decide to customize your
vehicle with optional batteries or motors, it may be necessary for you to change the pinion or
spur gear.
Installing a pinion gear with less teeth or a spur gear with more teeth will provide greater
torque but will reduce top speed. Likewise, a pinion gear with more teeth or a spur gear with
fewer teeth will reduce torque and increase top speed. Care should be taken when installing
larger pinion gears as this can “overgear” the vehicle, resulting in overheating of the motor
and ESC. When testing different gearing options, pay close attention to the temperature of
the motor and speed control to ensure you are operating within the temperature range of the
components. The motor or ESC should never be so hot that it cannot be touched. If tempera-
tures are too hot, a different gearing combination with a lower pinion gear and/or higher spur
gear is suggested.
CHanGInG THe pInIOn Gear/Gear raTIO
1. Unscrew the gear cover screws and remove the gear cover.
2. Loosen the motor screws and slide the motor back.
3. Loosen the set screw and remove the installed pinion gear.
4. Place the new pinion on the end of the motor shaft so the set screw is located
over the flat on the shaft.
5. Position it so the teeth line up with the spur gear and secure the pinion by tightening
the set screw.
6. Set the gear mesh.
7. Reinstall the gear cover.
dynaMIte tazer 3300kV 4-pole Brushless Motor (dyn4942)
SeTTInG THe Gear meSH
The gear mesh has already been set at the factory. Setting it is only necessary when changing
motors or gears.
Proper gear mesh (how gear teeth meet) is important to the performance of the vehicle. When
the gear mesh is too loose, the spur gear could be damaged by the pinion gear of the motor. If
the mesh is too tight, speed could be limited and the motor and ESC will overheat.
1. Unscrew the gear cover screws and remove the gear cover.
2. Loosen the motor screws and slide the motor back.
3. Put a small piece of paper between the pinion and spur gears.
4. Push the gears together while tightening the motor screws.
5. Remove the paper. Check the mesh at 3–5 different locations around
the spur gear for a small amount of movement.
6. Reinstall the gear cover.
trouBleshootIng guIde
If after reading below you cannot resolve your problem,
contact the appropriate Horizon product support center.
STeerInG SerVO OperaTeS BuT THe mOTOr dOeS nOT run
• Reprogram the ESC by following the programming instructions.
• Confirm the ESC is properly connected to the throttle channel on the receiver.
• Damaged motor: Test motor independently, repair or replace as needed.
• Vehicle battery voltage is low: Charge as needed.
• ESC overload protection is enabled: Check motor and connections.
• Transmission is damaged: Check transmission gears, spur gear
and pinion gear for damage.
STeerInG and mOTOr dO nOT funCTIOn
• Servo and ESC are not properly connected to the receiver:
Check polarity of the connectors to the receiver.
• Transmitter batteries or vehicle battery pack discharged: Recharge or replace as needed.
• Transmitter and receiver have become unbound. Refer to the Transmitter and Receiver
Binding section to re-bind.
fuLL Speed nOT aTTaInaBLe
• ESC programmed incorrectly: Reprogram the ESC.
• Check battery connectors for damage.
• Vehicle battery is weak: Recharge vehicle battery.
VeHICLe WILL nOT reVerSe
• Confirm the throttle trim is at neutral.
• Confirm the ESC is not in Forward Only mode.
• ESC is not calibrated correctly: Reprogram the ESC.
Spur Gear IS damaGed repeaTedLy
• Improper gear mesh.
• Slipper clutch is not adjusted correctly.
mOTOr STarTS runnInG aS SOOn
aS THe BaTTery IS COnneCTed
• Always power ON the transmitter before powering ON the vehicle.
• ESC is damaged and needs to be replaced.
• Throttle trim is adjusted incorrectly.
mOTOr SLOWS BuT WILL nOT STOp
• Throttle trim is adjusted incorrectly.
• ESC program does not match transmitter: Reprogram the ESC.
reduCed radIO ranGe
• Electrical noise from the motor: Move the receiver away from ESC, motor and wiring.
• Transmitter batteries are weak: Replace AA batteries.
TranSmITTer dOeS nOT pOWer On
• Confirm the AA batteries are installed correctly.
• Replace AA batteries in the transmitter.
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LOSI Tuff COunTry XXX-SCT rTr • InSTruCTIOn manuaL
