Bicycle Mechanics - is this rear derailleur short cage or long cage?

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bitt3n
09-04-11, 06:35 PM
I'm selling the rear derailleur off this bike, and someone asked whether it's short or long cage. I assume it's long. Is this correct?

http://i.imgur.com/QSHsfh.jpg

FBinNY
09-04-11, 06:55 PM
There's no one definition for cage lengths, but yours appears to be a short cage. In Campy derailleurs short cage models typically are about 55mm on center between the pulleys, medium cages are 74mm.
Shimagnolo
09-04-11, 07:01 PM
I have a long cage Centaur with pulley centers ~90mm.

HillRider
09-04-11, 08:27 PM
My long cage '06 Chorus rd is 88 mm between pulley centers and my long cage Shimano Ultegra RD-6500 is 72mm. Campy made short, medium and long cages and Shimano only short (SS) and long (GS) cage road derailleurs.
LesterOfPuppets
09-04-11, 08:58 PM
Your water bottles are gonna fall out! :)
bitt3n
09-04-11, 09:36 PM
thanks 55mm is correct