Ta! Is there an idler wheel you put the non-driving chain on or something? Can't find any decent photos/descriptions in a quick hunt online.
Only info I can find is from The Golden Age of Handbuilt Bicycles by Jan Heine and Jean-Pierre Praderes, beautifully illustrated with other early innovations as well.
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Ta - I think a mate's got that book, so I'll have to check it out!
Looks like it barspinz
@spudger started
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Ta! Is there an idler wheel you put the non-driving chain on or something? Can't find any decent photos/descriptions in a quick hunt online.