It is no secret … a crank drive motor is hard on drive trains. And if the rider does not know how to properly use that extra power being applied to the pedals the drive train can be destroyed quickly. Here is a video sharing advice on how to operate a crank drive e-motor.
Anyone using a crank drive e-motor would be wise to heed this advice. I was aware of what is shared here and followed this advice. My drive train was still quickly destroyed. Personally I don’t and I can’t recommend crank drive e-motors. After replacing badly worn parts of my drive train I went back to using my rear hub drive and much prefer it. My local LBS sells and services e-bikes including installing Bafang units on trikes. They say the same thing … a very simple truth … crank drive systems are hard on drive trains and they don’t recommend them.
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