Motor and Drive System Problems

The motor does not rotate (powered but not moving): This could be due to the handbrake not being returned, rear axle jamming, controller failure, or damaged handlebar. Lower the handbrake, check the rear axle gearbox oil, test the controller and handlebar.

Abnormal noise from the motor: Commonly occurs when Hall elements are burned out, the motor has a physical fault, or the bearings are rusted. Replace the Hall elements, troubleshoot the motor fault, or apply lubricating oil.

Jolts during driving or unstable speed: This could be caused by water ingress and oxidation of the connectors, insufficient battery voltage, or poor contact of the phase wires. Dry the connectors, conduct a charging test, or check the phase wire connections.