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I'm interested to know what forum members consider to be a good lifetime for an e-bike, and particularly for an e-bike kit motor. How many miles for a given price would you consider acceptable? This question was suggested to me by a YouTuber who was expressing some dissatisfaction with his CYC...

I have a Tongsheng TSDZ2 with about 5000km on the clock, and I have posted before about various noises which are coming from the motor, without having fully solved the problem. Now I have another issue, which may even be the key to the problem. When I begin pedaling from a standstill, whether...

I have a Tongsheng TSDZ2 which I have put about 4,000km on. I've had a few niggles with it, (which I mentioned in a thread titled Tongsheng Grinding) but it moved to a new level recently. This added to some existing clicks and grinds, which tended to get worse during a ride. After a freewheel...

I have a Tongsheng TSDZ2 mid-drive motor, which suits me well and on which I have ridden about 2000km. Recently, though, a horrible grinding noise has emerged when I am riding. I have done some analysis of this and discovered: the problem only occurs when pedaling - there is no noise when...

This is a bit of a long story about motor types, and effectiveness. I evaluate my e-bikes for effectiveness by their combination of speed, range, and rider power input which are optimal. For 2 years I rode a 500W 36V front-hub motor from a Chinese company called Jueshuai, which features 3 modes...

I guess it is common knowledge that a battery's voltage can actually increase just by leaving it lying around not charging, as the reduction in current load can allow the battery to recover. But I'm wondering about the extent of that. I have a 36V 2P10S Li-ion battery, which gave out while I...

I have recently bought a Tongsheng TSDZ2 torque sensor mid-drive, which has 4 modes - Eco, Tour, Sport and Turbo. It is said that this provides assist levels "from 36% to 300%". So if Eco provides 36% assist, and Turbo provides 300%, what levels of assist do the intermediate Tour and Sport modes...