>>1471104>>1471088>can i use a FD that's designed for 48T on a crank that's 50T or greater?It depends on a few factors. Front derailleurs have a "capacity", which is the difference in chainring sizes that it can handle. The capacity needed for your crank is expressed as the number of teeth on your big ring minus the number on your smallest ring. As the big chainring gets bigger, you need to raise the front derailleur and run into the potential issue of the chain hitting the derailleur when you drop down into the small ring.
