Originally Posted by
arfer1
Yeah, I was looking at the Megarange for hills, but I don't know whether the RD can work on a larger cog. The RD is a Shimano Altus LT that was original to the bike. How does one determine the capabilities of such a derailleur?
As I noted above the megarange will require a different derailleur. Your derailleur's capacity is 28 teeth.
VeloBase.com - Component: Shimano RD-AT12, ALTUS LT. There are ways to push capacity a little, but not by that much.