I'm possibly buying a road bike (again...) on Saturday and i'm going for a sit-upon this time.
Bike comes with a short-cage mech and an 11-25 cassette, i would prefer an 11-28 and have been told it will need a medium cage mech to go with it. Bike has a 50/34 compact chainset as well.
Just checking mechs on CRC and the short cage mech will apparently take a 30T cassette, but the bit that is puzzling me is the bit about the maximum front difference being 16T,maximum 34T.
What does that mean?