I ordered a Tongsheng TSDZ2 crank drive motor March 25, 2021 and installed it in very late April after waiting to get an extension cable I discovered I needed. Yesterday with only 1365 miles on it I uninstalled it as it no longer ran. It didn’t even last two months. I am very disappointed with it and there is no way I can recommend it to anyone. It is a piece of junk as far as I am concerned. I have requested a full refund. I will be waiting to see how that goes. It was my first experience with crank drive as I have always had a rear hub motor since I got into e-motor assist over 4 years ago. I did discover that I don’t like crank drive at all. It is very hard on the drive train. A hub drive is much more practical. I think the Tongsheng motor is underbuilt and poor quality.
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