9
ADJUSTING THE ELECTRONIC SPEED CONTROL(ESC)
BATTERY
ESC
MOTOR
RX
BK
Battery Wire
Receiver Wire
Motor
Wires
Y
R
Calibrating your ESC and transmitter.
1. Install the ESC according to the diagram shown above.
Switch on the transmitter first, and then switch on the
ESC power. Once the ESC is switched on, it will
emit a series sound indicating the ESC is actuating.
Adjust the throttle trim to get the best neutral position. When neutral is set,
another confirmation sound is emitted. If it fails to set up neutral, the confirmation
sound will not be heard. In such a case, re-do & re-check the system again
starting from Step1 of these instructions. This ESC is applicable to transmitters with either 50/50 or 70/30 throttle/brake movement
range.
3. Confirm that the throttle forward direction coincides with the ESC forward direction. Lift the car off its wheels. Move the throttle
forward and watch the wheel’s rotation direction, then move the throttle backwards and see if the system brakes.
4. If the wheels’ movement coincides with the throttle input then the setting is correct. If the movement is opposite then switch off the
ESC, change the setting on the transmitter’s throttle reversing switch, and go back to Step 2.
5. Motor rotation direction - Slowly apply throttle to check if the motor is rotating in the correct direction.
To reverse the direction of the motor, switch any two of the motor wires. Note: Do not reverse the battery wire connections! Reversing
the battery polarity will permanently damage the ESC.
6. For the first trial run, start with a smaller gear motor for 2~3 minutes then monitor the temperatures of both the ESC & motor. If
both temperatures are similar to each other, they are at good match. The gear ratio can then be properly adjusted to the desired
optimum ratio depending on the type of car and track. However, it is very important to always keep both temperatures under
95 °C, when selecting a gear ratio. A higher gear ratio (larger pinion or smaller spur gear) will increase the system temperature.
Running the system at increased temperatures will cause demagnetization of the motor, resulting in a dramatic drop of motor efficiency.
7. It is ok to replace a higher gear ratio or a higher KV motor if the temperature is kept under 80 °C but it should be done in accordance
to the instructions in Step 6. Start from a lower ratio then incrementally adjust higher. Battery selection is also an important consideration.
Changing to a higher voltage battery will require a lower KV motor and/or a lower gear ratio, unless the original motor has a low
enough KV rating to begin with. The ESC will be burn out if the motor and gear ratio does not match the input voltage properly.
See the example below showing how battery voltage affects power output.
Input 7.2V, internal resitance 0.18 --- 40A
(V/R=I 7.2/0.18=40A)
Input11.1V, internal resistance 0.18 --- 61.6A
(V/R=I 11.1/0.18=61.6A)
7
RADIO OPERATION
a
a. When turning radio system on. Turn the transmitter on first, then turn on the ESC.
b. When turning the radio system off. Turn the ESC off first, then turn off the transmitter.
c. Servo Reversing:It is sometimes necessary or convenient to reverse the output direction of the servo. The direction of the rotation
for each individual servo can be changed by simply flipping the reversing switch that corresponds to the channel number on the
receiver where the servo is plugged in. Under normal circumstances, Ch1 is steering, Ch2 is throttle, and Ch3 is for extra
function.Using the reversing switches as needed.
Caution: Do not run the transmitter's battery flat or you will lose control of the car. For additional details, please refer to
the transmitter instruction manual.
b
ONOFF
a. Check the radio steering functions. With the radio transmitter and receiver on, turn the steering wheel to the left. The front tires/wheels
should turn left accordingly. If not, flip the steering servo reverse switch.
b. Return the steering wheel to neutral. The front tires/wheels should point straight forward. If not, use the steering trim lever to
correct it.
c. Turn the steering wheel to the right. The front tires/wheels should turn right accordingly.
OPERATING RADIO STEERING FUNCTION
8
a
b
c
c