> Raleigh Pros had six gears in the rear as early as 1972. I have a 1972
> with 126 spacing and a six speed cluster. The 1972 catalog does not
> specify a six speed cluster but the 1973 catalog does. BTW, Pro's were
> the first production bikes equipped with Campy brakes IIRC. Also, most
> of the early Pro's and Internationals that I've seen from the early
> 1970's had 172.5 cranks for some reason. If you have a no date pre-1973
> crank with 172.5 arms I'd say the odds are better than even it came from
> a Raleigh.
> So when were six speed clusters introduced?
> George Allen
> Lexington, Kentucky
Thanks to some other listers and a search of the archives, I have found that six speed clusters first appeared in 1960. So my rear hub with 126 spacing is not an anomaly, but just outside of my experience.
Hazelwood, Missouri USA