Old 10-26-18, 06:09 AM
multimodal commuter
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Join Date: Nov 2006
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Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...

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Internal wiring for dynamo lights: the heads tube connection

Rene Herse and others used to set up dynamo lights with a wire inside the down tube with a carbon brush connection inside the fork steerer tube. Here's a diagram I found with a little help from Google.

More discussion here:
René Herse randonneuse bicycle

Of course today one would use a dynamo in the front wheel, rather than one running on the rear wheel; otherwise the Herse design should work fine. Has anyone on this forum tried this, or something similar? (calling @gugie, who helped with that illustration). Do you have any experience to share? Suggestions on materials, what kind of carbon brush to use, etc?
I put new leather on ruined saddles like Brooks, etc. You can reach me by private message.

Last edited by rhm; 10-26-18 at 06:14 AM.
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