Why do the pedals of an electric bike rotate along with the motor?
2 Answers
Electric bike pedals rotate along with the motor because the flywheel pulls the crank axle into operation after the motor starts. Here is an introduction to engine-related content: 1. Energy conversion: An engine is a machine capable of converting other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, etc. For example, an internal combustion engine typically converts chemical energy into mechanical energy. 2. Device: An engine can refer to both a power-generating device and the entire machine including the power unit (e.g., gasoline engines, aircraft engines). The engine was first developed in the UK, so the concept of an engine originates from English, with its original meaning referring to "a mechanical device that generates power."
The pedals on my e-bike keep spinning along, making it really hard to ride. After checking, it might be an issue with the internal ratchet or clutch mechanism in the bottom bracket—either jammed or a loose spring—causing the pedals to rotate passively when the motor isn't assisting. Last time at the repair shop, the mechanic mentioned that this older motor design has flaws, especially prone to rust and clogging after riding in the rain. Over time, this not only drains the battery faster but could also lead to unstable control or even crashes when going downhill. For daily maintenance, it's recommended to regularly clean the chain and drivetrain, avoid overloading, and get a professional inspection immediately if there's unusual noise or excessive resistance. Replacing a small part early can prevent bigger issues.
