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-   -   derailleur ? (http://www.bikeforums.net/general-cycling-discussion/252930-derailleur.html)

johnism 12-14-06 07:33 AM

derailleur ?
 
what is the difference between a short cage and a long cage derailleur ( why would you use one over the other )?
Thanks,
John

barba 12-14-06 07:45 AM

The long cage will take up more slack in a chain. This is useful on a bike where there is a large difference between the lowest and highest gear. On road bikes you will most often see a long cage on a triple. You need enough chain to get around a 52t chainring which leaves a lot of slack chain when you use the 30t ring.

geo8rge 12-17-06 07:47 PM

I think the shimano mega range cassette and freewheel requires a long cage.


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