Question; Please edumacate me. Is the 4 hole derailluer more desirable or does it work different from the other 3 hole ones? Cheers,
Answer; if you are collecotr of vintage Campy parts, yes, less availablity, because they had a problem of chain geting caught at 4th hole, so saving 1/2 gram or so wieght (and also maybe cool looks?) did not make through. Campy stop producing in a short period of time. If you enjoy riding, take their recmmendaton, replace it with improved model and sell the 4 hole one to Campy collector!
Have a great evening!
KEN TODA, High Point, NC, back in winter! 30's