Motor & Powertrain

Common issues we handle

• Failed or worn hub or mid-drive motor
• Faulty controller cutting power
• Bad hall sensors confusing the motor
• Throttle or PAS sensor not responding
• Damaged motor wiring or connectors
• Water intrusion into the motor

Services in this category

• Controller ReplacementThe controller is the brain that drives the motor. A failed controller can cause no power, cutouts, or erratic behavior. Replacing it with the correct unit restores normal operation.
• DiagnosticNot sure what's wrong? Book a Motor & Powertrain diagnostic — a provider will inspect and identify the issue.
• Hall Sensor TestingHall sensors tell the controller where the motor is spinning. When they fail, you get jerky power, no assist, or a motor that stutters. Testing them isolates the fault fast and cheaply.
• Hub Motor Repair/ReplacementHub motors live in the wheel and can fail from worn bearings, burnt windings, or water damage. We repair or replace the hub motor to bring back full, reliable drive.
• Mid-Drive Motor ServiceMid-drive motors deliver power through the cranks and need periodic service to stay smooth and quiet. We inspect, clean, and repair internal gears, bearings, and seals.
• Motor Noise DiagnosticsGrinding, clicking, or whining from your e-bike motor is a warning sign. We diagnose whether the noise comes from bearings, gears, the controller, or something rubbing before it gets worse.
• Throttle & PAS (Pedal Assist Sensor) RepairWhen your throttle stops responding or pedal assist cuts in and out, the throttle or PAS sensor is usually at fault. Repair restores smooth, predictable power delivery.
• Other ServicesAny Motor & Powertrain service not listed here — describe what you need and a provider will help.

Frequently asked questions