Hi,

>Sounds good. I suppose though you have to brake a lot to build up potential, thus needing to replace the brakes more often, with the power it requires to make new brakes. Ain't no such thing as a free lunch :-)

I think the opposite is true. You use the brakes less because the 'dynamo' itself acts as a brake. Same as riding a bycyle down hill with a dynamo - the dynamo slows you down.

There were buses made for a while with a flywheel. When stopping the bus the brake pedal actually engaged the flywheel so that it built up a spin. This was then fed back into the transmission to assist the bus when starting off again....