How to troubleshoot the cause of unstable rotation speed of JJRC C8803 motor?

[Fang RC Car]

JJRC C8803 The motor speed of RC car is fast and slow, how to check the cause?

First of all, check whether the battery power is sufficient, insufficient power may lead to unstable power supply to the motor. Check whether the brushes of the motor are seriously worn, if the brushes are worn, it will affect the normal operation of the motor. Check the heat dissipation of the motor, overheating may make the motor performance decline. In addition, troubleshoot whether the ESC is working properly, ESC failure may also lead to unstable motor speed.

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