While hub motors provide simplicity and efficiency through their compact wheel integration, they naturally generate heat as a byproduct of electrical resistance and mechanical friction during operation.
Smaller ratios allow higher top speeds due to lower RPM needs, while larger ratios provide greater climbing power from increased torque.
Mid-drive and rear-drive motors each have their own pros and cons for mountain bike modifications.
To repair the wheel hub motor, you need to first diagnose the fault type, and then conduct troubleshooting and repair according to the fault type. However, if the wheel hub is seriously damaged, it will need to be replaced with a new one.
