rocketman58
100 mW
- Joined
- Aug 6, 2022
- Messages
- 35
I have two trikes, both with Bafang 500w geared hub motors. One has a model G060, and the other has a older CST motor that I purchased used. The 060 is very quiet, and I have no problems with it. The CST motor is noticeably louder. It makes an audible whine when running. This whine gets worse at a certain RPM. The motor seems to work fine, but the noise is annoying. Since it is a used motor, I don't know the history behind it. What would cause a motor to become noisy, and what can you do to fix this?