Jan Heine wrote:
>I haven't used the older dynohubs, but I think they added
>significant resistance. The Schmidt and latest Shimano generator
>hubs really have been a big step forward in that respect.
I have used all of these, and the new hubs have no less magnetic drag than Dynohubs did, actually, probably a bit more!
The big difference is that Dynohubs only put out 1.8 watts, while the newer hubs put out 3 watts. The main technological difference is the use of exotic "rare earth" magnets in the newer hubs.
Also, the new hubs are quick release, with push-on electrical connectors, while Dynohubs were nutted, including the electrical contact binding posts.
Sheldon "http://sheldonbrown.com/dynohubs" Brown
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