Originally Posted by
old's'cool
I'm thinking of upgrading the crankset from a traditional 42-52 double to a triple; and I'm doubting that the NR RD has the required wrap for say, 36-22 to 52-19, i.e. 13T of wrap, not accounting for shifting errors, which would extend the wrap requirement to over 30T, in the worst case.
Further background is, apart from consumables, I've kept this build almost 100% European; only exceptions so far being low profile components like the seatpost and the freewheel.
Soma makes a retrofit long cage for the Campy NR
Soma Nuova Retro Derailleur Cage Plates
Saw lots of them at Eroica -
Chas makes a good point about the simplex upper pivot bolt on the hanger model not being interchangable to use as a direct mount, however, seems to me that the cages ARE generally interchangable, so if you get a long cage, you can put it on another body (for that matter, the upper pivot bolts generally are interchangable as well - LJs are different, as the spring keys into the body instead of the bolt, and I can't speak to much beyond early 80s), but generally speaking, if you end up with a simplex GT, hanger model, and pickup a direct mount model, you can swap things around and make them work. On the other hand just getting a new cage for the existing NR seems much easier than going down the French/Simplex rabbit hole.
......just sayin'
Joe