Originally Posted by cprobertson1

It had a UN55 square taper bracket installed about a two years ago, should have about 5000-6000km on it. I didn't plan on changing it, buuuuut... I have chainline problems... the largest chaining won't fit under the derailleur! D'oh!

The new (front) derailleur doesn't extend out far enough - I've got the old derailler on just now so I can still ride it. Still, I done-a-dum-dum. Never occurred to me the front derailer would have a different max-extension!

The one I installed is an FD-A073 which apparently is intended for a chainline of 45mm. The crankset is an FC-M371, which is a 50mm chainline - so something needs to be changed. Do you reckon a 45mm chainline bottom bracket would do me, or would I be better chaning the front derailleur? To be fair, the current derailer doesn't really need changed - it looks worn and sad and the plating is blotchy, but it works.