Hi, I am looking to add to my stroller a generator that will generate power to run a series of lights the i will place on the frame at different points. for your referance i want to build this on a "bob revolution se dualie stroller" The point of the lights is nothing more than visibility and will most probably be mini LED style flashlight heads with color filters (red for the back and white for the front). I want to generate power for the lights by moving the stroller and the big issue that I am having is how to determine not how much power I need to generate but how to measure how much power I can generate by spinning the wheel. The wheels are independent and do not have an axle as such I will need an induction motor where the axle is connected to small wheel that is in contact with the stroller wheel itself. the stroller wheel has a radius of 8 inches. And I want to power 4 points (each running their own wires motor to lantern). the flashlights for the sake of argument) will be of the costco (inexpensive non specialty) variety where 3 or 4 AA batteries power 5-10 LED bulbs. the design is simple enough. my only issue is identifying which motor to buy as the axle wont be spinning very fast and i need to generate power. can using a small point of contact between the axle and the stroller wheel I can turn the turn the axle at a higher speed generating more power? also where is a good online source for motors that small?