What's the practical difference between short cage RD and long cage RD?
03-04-10 | 06:47 PM
#1
Thread Starter
Bike addict, dreamer
Joined: Nov 2009
Posts: 5,165
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From: Queens, New York
What's the practical difference between short cage RD and long cage RD?
What's the practical and functional difference between short cage RD and long cage RD? Why would I choose one over the other?
Thanks!
Adam
Thanks!
Adam
03-04-10 | 06:52 PM
#2
mechanically sound
Joined: Jan 2007
Posts: 1,610
Likes: 87
From: Dover, NH
Bikes: Indy Fab steel deluxe, Aventon cordoba, S-works stumpy fsr, Masi vincere, Dahon mu uno, Outcast 29 commuter
The difference is in the amount of chain it can "wrap up." The sum of the differences between the large and small cogs and chainrings on your bike determines how much chain you need to "wrap up," and this number is spec'd on each rear derailer. Simply put, if you have a triple chainring and mountain cassette, you definitely should use a long cage. If you have a double chainring and a corncob cassette, you only need a short cage.
