Originally Posted by
cyccommute
It really shouldn’t be an issue. You are really only asking the derailer to move the chain on a slightly larger chainring. There are lots of comfort bikes out there using MTB derailers on 48 tooth chainrings.
Originally Posted by
dsbrantjr
I am shifting a 42/32/22 crankset with an Alivio FD-M410, and it worked fine when had I put on a 46 tooth chainring; I removed it only because I preferred the lower gearing.
I hear you guys and I think that's the solution I'm going with (top pull FD and a cable stop for the frame). This will make for a cleaner cable run and that should help the FD.
But a lot of the MTB FDs are rated to 40 teeth, right? This shimano alivio is rated to just 40 teeth:
https://www.amazon.com/Shimano-9-Spe.../dp/B00OZPPC72
I'm not saying it won't work with a 46 tooth chainring; I'm just saying I'd rather not be the guinea pig on this one.