-=> MIKE ROSS wrote to JASEN BETTS <=-

 MR> "Jasen Betts" bravely wrote to "MIKE ROSS" (31
Aug 03  08:50:36)
 MR>  --- on the heady topic of "Vehicle LED's"

 JB> ISTM that the worst part of the lighting system is the friction drive
 JB> if there was a better way to drive the generator that'd help.

 MR> Ah, I see, I'm not so sure there is a lot of loss in the friction but
 MR> every little saving counts! Instead of the friction perhaps a direct
 MR> gearing drive would improve the efficiency you say? Hmmm, that would
 MR> involve placing the dyno closer to the hub and adding a gear to the
 MR> wheel with a smaller gear on the dyno to preserve the original ratio.
 MR> This might be possible... but certainly a propellor would not work.


When I was a kid my bicycle had a generator that was part of the
hub. Back in 1967 a 3 speed with this arrangement cost
somewhere around 100 dollars.
Far better than those little things that rub the tire.


 
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