Stumbled across this at work, its 6 years old. Never seen anything like it, so I took a video





The rear spokes have weights in them that are forced outward when the wheel moves faster and faster, this than pushes what is the spoke protector on most bikes against the chain, pushing it down through the gears. So, the harder you pedal, the faster the wheel goes, the more the weights move out, the higher the gear you go into. Its really cool how it works actually! Took me a few minutes to figure it out though

ahaha thats actually pretty sweet, took me a while to see what was going on in the vid... hows well does it work? aha you should do a test ride/review for the site

man thats one freaking smart 6 year old! hahaha that really cool!

It works ok, makes alot of noise and it is hard pedaling after its on the highest gear from a stand still.

haha i saw one of these today when i was riding around, i didnt see it in action, the man was jsut sitting on it wait for his wife i think? i was going to ask him if i could see it and find out more about it, but i really had to get somthing to eat, and by the time i got back from eating he was gone.