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  1. U

    Question on Motor Controller Compatibility, and Troubleshooting

    Hello All, I have a question regarding motor controller compatibility for an existing E-bike kit supplied by Bafang USA Direct. In short, the problem is that this motor, and the motor controller that comes with, it is not designed to be capable of regenerative braking. We have made the...
  2. U

    Why is there no Free-wheeling in Direct Drive Motors?

    Hey guys, quick question. A main drawback to direct drive motors is that when the battery dies, you then have to pedal against the regenerative resistance of the motor (turning the motor into a generator and charging the battery, which makes hard work for pedaling). Could you not just disconnect...
  3. U

    Hollow Axle

    I'm working on a regenerative braking project on E-bikes and was wondering about axle-design specifications. I know that axles have standards in relation to dropout spacing, dropout width and axle flats but I have seen nothing in relation to axles being solid, or hollow. Does anyone know if most...
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