Originally Posted by prathmann
I've used a variety of bottle dynamos (incl. Union and also some very cheap discount store models) and have never had a problem with them in either wet or dry conditions. Slush and snow have resulted in slippage and reduced light output so auxiliary battery lighting is good under those conditions. There shouldn't be any need for a tire with a generator track since I position the roller of the dynamo to run on the main tire tread surface - not on the sidewall. Of course this is with road tires with non-aggressive tread patterns, not MTB knobbies.
How does this work if I go with something more for multisurface, like an Armadillo or even (shudder) one of those big fat cheap Cheng Shins? Plus, I assume I'll have to relieve teh fender for pully clearance, depending of course on chain lines.
Duhhh (said Road Fan editing his post), if I go with a heavy tire like I described, its sidewalls will be able to withstand a bottle even if I do get it installed a bit sideways ...
Last edited by Road Fan; 02-25-10 at 11:15 AM.