At 9:41 AM -0600 7/20/07, Mitch Harris wrote:
> finally permitted in the Tour de France in
>1937. Racers back then mostly used the Osgear Super Champion.
>The parallelogram derailleur seems to have been invented that year
Sorry about that. I added a paragraph between the TdF mention and the Nivex. The Nivex was patented in 1937 and entered production in 1938. The first review of the Nivex that I have found was in Cyclotourisme 7/1938. That issue also contained an ad that stressed the constant chain gap of the Nivex, a feature that still is considered paramount for consistent shifting across the gear range.
Jan Heine Editor Bicycle Quarterly 140 Lakeside Ave #C Seattle WA 98122 http://www.bikequarterly.com