Tire that makes electricty

[stovie]

I was thinking of taking piezo electric actuators and putting them around the outside of a tire. That should take the deflection of the tire and create power. Two of them on one square foot tiles were supposed to produce 150w from one 150 pound person walking on them, so having a couple hundred around the outside of the tires could make much more power.

The power produced by these systems are generally regaining "power" lost to the tires deflection otherwise producing heat in the tire. I don't think it could run an electric car directly but I do believe it could take the load of an alternator, say 80-100 amps

[Xist]

Heh. How about installing them in the floor in a high-traffic area?

[CapriRacer]

Originally Posted by stovie

I was thinking of taking piezo electric actuators and putting them around the outside of a tire. That should take the deflection of the tire and create power. Two of them on one square foot tiles were supposed to produce 150w from one 150 pound person walking on them, so having a couple hundred around the outside of the tires could make much more power.

The power produced by these systems are generally regaining "power" lost to the tires deflection otherwise producing heat in the tire. I don't think it could run an electric car directly but I do believe it could take the load of an alternator, say 80-100 amps

Not exactly. What causes the heat is the internal friction of the materials being deflected. Adding the piezo-electric actuators adds another amount of resistance and would increase the RR - and that becomes sort of like a perpetual motion machine.