Weak Ass Brakes
I installed a front drum brake on one of my bikes and a front disc brake on the other. I expected the drum brake to be weaker than the disc brake, but didn't expect both of them to be just plain ass weak... So I decide that rear brakes are absolutely necessary. I had previously removed the rear coaster brakes because the brake arms interfered with the rear sprocket adaptor sprockets. I revisited my decision to not use the coaster brakes. Fortunately I saved all he brake parts.
I also didn't use the motor mounts that came with the engine kit and as always I saved them too. I used one of the mounting clamps to modify the coaster brake arms for both bikes by cutting 10mm strips out of the clamp to extend the brake arms out past the rear sprocket and simply cut the brake arms and welded in the strips and secured the arms to the frames with the brake arm brackets just as they were to begin with. This is what I came up with.