What chain on Nuovo Record derailleur?
I'm building up an 80s Colnago frame that supposedly can accomodate 130 mm spacing. I have a Nuovo Record rear derailleur, vintage. Is there any way to tell what size chain will work on the derailleur? I wouldn't mind having more gears on the bike, but I figure the derailleur will need a wider chain, based on its age, correct?