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  1. W

    Bafang BBS01/02 on a bike with hub gear and footbrakes?

    Hey, I want to build a Bafang BBS01/02 (is there another difference but 250W/750W here?) on a beautiful locally produced bike. It has different options of Shimano hub gears. I have read that pedal assist on crank drive is a bad idea with hub gear. Does anyone know if this is true? If so, is it...
  2. W

    Standard bike wheel only fastened at one side possible?

    Hello! I'm building a tadpole trike at my Uni's workshop now and I have two identical standard 26" bike wheels. On a regular bike the wheels are fastened at both the left and right side by the fork, but on my trike i want it to only be fastened at one side, like this velocar...
  3. W

    Friction in hub-motor, is the controller or motor broken?

    Hey, while driving my 1000w 48V ebike (cheap motor/controller from eBay/China) yesterday the engine suddenly stopped working and was no longer frictionless. From the engine there are 3 thick wires and 5 small (see picture) to the controller. The interesting part is that if the yellow wire...
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    Would this steering mechanism work on a tadpole?

    I'm making a tadpole bike for a school project and I'm wondering if anyone has come across a steering mechanism similar to the drawing I've attached. I see that the "steering pole" can't be to close to the wheel, because then it would hit the tire when turning to the right. Do you think it...
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    Uphill, no pedal, 20" 1000W 48V possible?

    Hey! I'm new to this forum and last week I managed to get my 1000W 48V 26" rear hub motor from China to work with a 48V20ah battery and i love it! I goes much faster than I expected also uphill if i help with the pedals. My next project will be to build a trike with no pedals. I understand...
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