Originally Posted by
Aardwolf
Hiya folks,
I'm planning a new project; early 60's Holdsworth Cyclone or Monsoon (but I haven't got a frame yet).
I'm either going to build it period (ish) or swap in some functional later parts (1980 max).
But I'm stuck on which period derailleur would work.
I'm thinking 5 speed 14-28 + 52/36 for the gears which gives max cog 28 / wrap 30
For 80s I would pick SunTour Cyclone GT Mk 1 + SunTour Power Shifters
I've looked at Campy Gran Sport or Record and it looks like they can't handle cog 28 / wrap 30.
Can anybody suggest a 60s derailleur that would work ?
Peugeot UO-8s used very similar gearing (may be not as big as a 14-28 ... ) as shipped to USA, with Simplex derailleurs. If you can find anything pre-Delrin, it should be durable, and their Delrin dual-pivot models had pretty good range.
The Campagnolos of the day were intended for road-racing corncobs and pretty narrow spreads between the front rings. Think 14-18 through 14-23. An exception is the Campy Gran Turismo which has a pretty darn long cage. Low reputation but I don't know if that is because of weight or function.
"The Dancing Chain" should offer some decent guidance.