MIKE ROSS wrote in a message to Greg Mayman:

 MR> "Greg Mayman" bravely wrote to "Jasen Betts"
(03 Sep 03  08:41:00) 
 MR> --- on the heady topic of "VEHICLE LED'S"

 GM> BSA cycles in Britain had the "DynaHub" generator in the 1950's,
 GM> built into the hub of the front wheel. There was slightly more
 GM> drag than a normal wheel when the lights were off, but a lot less
 GM> than the friction drive one with the lights on.

 MR> It couldn't have dragged too much if no power was being consumed.
 MR> How much magnetic loss could there be in a small thing like that?
 MR> Come to think of it I vaguely remember what you describe from my
 MR> childhood memories.

I've got a couple of these Dynahubs, the thoery is that if you crimp alum
blades on the spokes you can make a pretty useless wind generator.

Regards,
Peter 
--- timEd 1.10.y2k+