Reduction gear
thingiverse
This is a reduction gear designed so that on an ebike the magnet located on the rear disk spins slower, therefore increasing top speed. this is not to be used on public roads just private land. this was an experiment that worked so I thought I would share it the bore is 17mm dia with 2 opposite flats 15mm A/F i designed it on fusion 360 using spurr gears. - module 3 - external has 24t - internal has 9t - magnet gear 7t 10mm x 2mm rare earth magnet is press fitted into magnet gear when its all assembled total thickness is 5.5mm x 82 dia
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