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I like your idea- but one thing I have learned is that with a limited power supply, it is advantageous to be able to funnel it in through a point where you can utilize the gear system to get the right power curve. I had a 80 cc chinese motor on my bike, which didn't reach it's peak until I hooked it in through a triple front chainring and 9 in the back to really take advantage of the it's power band. I also had to disassociate the front chainrings from the cranks by adding a front freewheel so pedaling was supplemental and optional- not having the engine spinning the cranks and my feet at 120 rpm.
Maybe an electrical motor with a rim that large as the magnet would have so much torque it wouldn't matter?
I was just watching a video with a similar setup as the recently found bike which produced 250 watts ave- which is a NICE supplement to have.
Nice idea though- anything related to bikes like this I just love!
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