Step 1: Find a trike. and motor(s)
also going to need a front sprocket from a donor bike pile. the bigger the sprocket the faster the bike will go (horsepower permitting)
the wheelchair has all needed parts. motor, controller, batteries, and controls.
other bits are from ACE hardware.
Step 2: Mounting the motors
connected into the 3 speed hub i have 3 gear choices 1st gear is 50% underdriven (more power for hills) 2nd gear is 1 to 1 and 3rd gear is 50% overdriven (for more speed)
if you dont have a 3 speed you can connect the motors straight to the chain gear on the rear axle.
since it is an electric powerchair with 2 motors and the gearboxes had a 5 bolt hub i went to ACE and got some couplers and dug up an old front sprocket from a donor bike. placed the sprocket between the hubs and bolted the hubs together.
MAKE SURE BEFORE YOU INSTALL THE MOTORS THAT THE MOTORS ARE TURNING THE PROPER DIRECTION TO POWER THE BIKE.
motors are mounted on a board that is attached to the bike by the brackets that held the basket on originally.
you want to mount the motor solidly because it is going to put out 3 or 4 times the force of an average person pedaling.
also make sure the sprockets are perfectly aligned. If they are not the chain will slip off.
also make sure all bolts are on the bike frame or it can cause problems later on. i built this with absolutely no welding.