I own a Raleigh Tristar tricycle with a Sturmey Archer internal 3 spd hub and coaster brake. I think the pedals should be able to go in reverse; so not to damage the motor or hub. I probably can disable the coaster brake, but then no rear brake! Will a mid drive work with a 3 speed internal hub?, or do I have to get a 5 speed cassette hub with disk brake for better braking? Looks like this is a lot of work. Should I just install a front ebike kit? I'll just have to use the front brake before applying the rear brake. Still will the front ebike kit work with an internal 3 speed hub? Your comments would be greatly appreciated. Jesse