Insane Bicycle Mechanic
Join Date: Mar 2008
Location: other Vancouver
Originally Posted by ls1geezer
Looks like one is set up for double cranks, whilst the other is for triple cranks. Probably more but that's what I noticed at first glance.
Nope. That's all there is to it. Shimano nomenclature increments "double" front derailleurs by three to make a "triple". That is:
Ultegra FD-6500 "double" + 3 = FD-6503 "triple"
Tiagra FD-4400 "double" + 3 = FD-4403 "triple"
Dura-Ace FD-7800 "double" + 3 = FD-7803 "triple"
Comcast nuked my web page. It will return soon..