[CR]re: why no dynohubs?

(Example: Books)

In-Reply-To: <a062309bfc2a2ecd87597@[]>
Date: Sat, 23 Jun 2007 12:26:47 -0400
To: Jan Heine <heine94@earthlink.net>, classicrendezvous@bikelist.org
From: "Sheldon Brown" <CaptBike@sheldonbrown.com>
Subject: [CR]re: why no dynohubs?

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 +-----------------------------------------------------------------+ | Love seems the swiftest, but it is the slowest of all growths. | | No man or woman really knows what perfect love is until they | | have been married a quarter of a century. --Mark Twain | +-----------------------------------------------------------------+ --
    Harris Cyclery, West Newton, Massachusetts
       Phone 617-244-9772 FAX 617-244-1041
       Hard-to-find parts shipped Worldwide
    Useful articles about bicycles and cycling