how long should your wheel spin for if you pick up bike and spin wheel?

[nickyboy]

I had a rear wheel puncture the other week, while the bike was upside down the front wheel was spinning for the time it took me to change the tube, I was mesmerised by it, just when the heavy bit got to the top I kept saying to myself it will drop back this time, it never did, I had to stop it in the end it was getting obsessive, it was turning realy slow, I think it must have been the wind.

You've discovered perpetual motion, the answer to all the world's energy needs

 

[Crackle]

You've discovered perpetual motion, the answer to all the world's energy needs

Fields full of bicycle wheels with dynamo hubs.