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Old 12-02-2015, 03:40 PM
motoringbike motoringbike is offline
Motorized Bicycle Member
Join Date: Jan 2014
Location: CDN
Posts: 20
Default Motor and Crank - Sprocket Sizing

I'm building a freewheel crank.

Where are the cheapest places to buy the sprockets, I am looking for 50T on up.

Also, how does one calculate, or know, what kind of speed and torque I would have when changing the motor sprocket and the crank sprocket.

I have 2 motors, one is grossly overpowered, 3000W nominal motor, the other motor is a 1500W nominal motor.

I am building a mid-motor ebike, for hill and stair climbing.
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