Originally Posted by
Road Fan
I installed my 1st-gen Chorus rear mech on my GC just to compare it to the NR that came on the Masi. It fit quite well on the dropout and adjusted easily. In friction mode it shifted very well. I could not tell you how it would do in an indexed setup. I'm not sure Campy designed that early Chorus for indexing, did they? Perhaps in the B mode with the angled parallelogram it would index well. In the A mode the design geometry is lacking compared to the NR and SR.
Yes - my FD is braze on. I don't think the 1st gen Chorus RDs were designed for indexing, but they do shift well in the "B" position, where they are actually the first Campy slant parallelogram unit (I think).