1
vote
1answer
84 views

Replacement chainring compatibility

I have a Fuji Absolute 3.0 (about 2011) with a generic crankset. The triple chainrings are stamped with 'SAMOX'. It is a 30-42-52t set. I favour the middle chainring, which is now badly worn and needs ...
7
votes
1answer
3k views

What physically makes chainrings have a specific speed compatibility?

Chainrings are sold as having a specific compatibility for only certain speed setups, some overlapping across many. What physically makes this the case? From what I understand, 5/6/7/8/9 speed chains ...