To operate your converted electric-assist bike is very easy. The power is controlled by a simple throttle, much like a motorcycle or ATV. You replace the standard hand-grip on your bike with the twist (or thumb) throttle, and then can use it when you like. If you need lots of power to get up a hill or across an intersection, you twist it all the way. If you need just a bit of power to maintain a fast cruising speed (while pedaling if you want), then you twist it part way. If you want to just pedal it like a normal bike, then you leave the throttle and just pedal. You choose when or if to have the electric motor helping you, and you choose whether to pedal or not. Any combination works. And unless you're on a steep hill, you can even use the motor without any pedaling at all - though the range of the battery will be reduced. So you can choose how much exercise you want to get on a given day and how much you want to use the motor.