I have 4 speed coaster brake Schwinn. Installed the mid drive motor kit, had to order crank bushings, different sprocket, then new pedals. My issue now is chain seems bound up and I have no back brakes ( coaster brake), whats the fix ?
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My guess is you put it on the wrong bike, cant figure out how brakes would work, I would move the motor to another bike. That's my guess.