User Manual
9
EN
ELECTRICAL LAYOUT
For correct operation, Channels
1 and 2 must be used as shown in
the wiring diagram. The motor can
be disconnected from the ESC at
the connectors in the wiring.
Part # Description
A DYN1072
Motor
B
DYN1050EC Battery 7.2V
C DYN3900
Steering Servo
D ECX9011
Receiver
E DYN4925WP
Electronic Speed
Control (ESC)
F
Channel 1
G
Channel 2
MAINTENANCE
ELECTRONIC SPEED CONTROL (ESC)
Low voltage cutoff (LVC) protects the battery from overdischarge by
activating when the battery reaches 1V per cell under load. The ESC
willresetafterapproximately10seconds.Thevehiclecanthenbe
driven slowly back to the driver for battery recharge.
Important: When the motor is disconnected or damaged,
the beep may not be heard.
NOTICE: Continually driving to LVC may damage the battery.
SETTING THE GEAR MESH
The gear mesh has already been set at the factory. Setting the gear
mesh is only necessary when changing motors or gears.
You must remove the vehicle’s gear cover (A) to make this adjustment.
Proper gear mesh (how the gear teeth meet) is important to the perfor-
mance 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.
Set the gear mesh by following these simple steps:
1. Loosen the 2 motor screws (B).
2. Put a small piece of paper (C) between the pinion and spur gears.
3. Push the gears together while tightening the motor screws.
4. Rotate the gears to remove the paper. The gearing should
move a small amount.
5. Reinstall the gear cover.
A
C
B
EC3EC3
A
B
C
D
E
G
F
Operation LED Color LED Status Sound
Stop Solid Green ON
Forward All OFF
Forward (full speed) Red ON
Reverse All OFF
Reverse (full speed) Green ON
Brake All Solid ON
Overheat All LEDs LEDs alternately flashing 1 beep per second
Motor Stalled Red LED Flashing quickly 3 times, stopping, then repeating 1 beep per second
BatteryOverVoltage(over10V) All LEDs Solid Red LED. Green LED flashing once per second 1 beep per second
BatteryUnderVoltage(5.0V) All LEDs Solid Green LED. Red LED flashing once per second 1 beep per 5 seconds










