Originally Posted by
gmason
Just curious. Weren't chains in those days (and chainrings) much wider (thicker)? Will a 10s chain really fit over the teeth of the old chainrings?
8-speed and older chains were wider because the sideplates were thicker and the pins longer. The gap inside of the plates has remained the same and a 9 or 10-speed chain will fit over the teeth of older chainrings.