Originally Posted by
rat fink
What are the functional differences between short and long cage RD's? I thought long cages were intended for triples?
More chain wrap, so that you can run a larger difference in teeth from low to high. A long cage will work fine (I'm running one with my compact double, although I could get away with a short cage), and although some might claim the shifts aren't as crisp, on proper setup they will shift just as well.
Considering they are half price of the short cages, it's a good place to save money.