Tom Adams wrote:
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> So is it fair to say that six speed started popping up on the radar around 1972 led principally in the US by the Raleigh Pro, and by 1981 the battle was pretty much over?
There is this note in the Campagnolo Timeline at http://www.velo-retro.com
"1961 - In July a revised Gran Sport rear derailleur is introduced with a 10mm spring cover (was 8mm) to improve shifting on six-speed freewheels. Note that six-speed freewheels are not commonplace until the mid-1970s!"
Chuck Schmidt South Pasadena, Southern California
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