Originally Posted by
ToledoTom
Shimano front derailleur specs list the maximum changing size, i.e., teeth. I'm waiting on a FC-T4060 crankset (44/32/22) that I'd like to use with a M4000 Altus front derailleur. But specs for the derailleur say max chainring size 40t.
Can I cheat it or would that be asking for trouble?
You can probably cheat, but you may want to set the derailleur height close to where it would be if it were a 44t.
I have found when going to a smaller than recommended outer chainring, that setting it with a larger chainring/cage gap helps the upshift from middle (triple) chainring. I haven’t had an issue downshifting with the larger gap. But you do need to experiment to find the best setup.
John