Originally Posted by
ft3safety
First question I have is what frame are you using? If you're using a frame with a braze on derailleur mount, it might not be low enough to accommodate the 24 tooth. Typically Braze on mounts are good for 34Tooth compact and may have room to go a little lower. I
It's not the inner chainring the fd mount has to satisfy, it's the larger chainring. The derailleur should be positioned low enough to just clear the 40T outer ring.