Here is how I used electric bike kits to convert bicycles into e bikes. Only one e bike conversion is shown here.
The bikes were older daily rides that needed work and new paint, so this was a chance to fix them up and install the kits all at once.
Before you get started with a conversion, decide what you want to use as a donor bike, what kind of riding you want to do, the kit you want, and finally the cost. You may be tempted to just get the cheapest kit out there, which might work, but it is best to try and figure out what you want the final conversion to do.
If you need help in deciding the size of motor and battery pack to use, cruise on over to: http://www.evsroll.com/Electric_Motor_for_Bike.html for details on how much power you need. It is interesting if nothing else.
Step 1: The E Bike Kit
Here is the kit used in the conversions. You have a rear wheel motor, controller, thumb operated throttle, on/off switch, brake levers with kill switches (not used), and battery to control cable.
The motor in this kit is a 500 watt continuous, 1200 watt peak power geared motor especially suited for hills. This motor requires a 22 Amp continuous controller.
The brake levers had kill switches on them. Since the throttle is thumb operated, the kill switches and extra wires did not seem necessary. This proved true later on. If you need to stop, you just let go of the thumb throttle, and the motor stops. It is intuitive.
The kits also came with nylon battery bags. These bags are well made, but the battery instructions warn against using these bags! Go figure.
Cost of Kit: $350
Controller: $ 50 extra
Total cost for the conversion including the kit, battery, and parts was about $950