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Campy 10 speed rear compatability

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Campy 10 speed rear compatability

Old 02-09-18, 10:35 PM
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Lightfoot21
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Campy 10 speed rear compatability

Simple question for some of you experienced mechanics. I currently have a campy chorus derailleur on a bike with a 12-25 cassette. Can I use the same derailleur if I go to a 12-28 or 12-29 cassette? i believe it is a short cage. I'll post a picture. Too many tough hills! Thanks in advance. Sorry something has changed since I last posted. I can not post the picture.

Last edited by Lightfoot21; 02-09-18 at 10:41 PM. Reason: Add photo
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Old 02-09-18, 10:49 PM
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Bill Kapaun
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Google-
campagnolo chorus rear derailleur capacity
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Old 02-09-18, 11:33 PM
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alcjphil
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I am using a Chorus short cage derailleur with a 12 29 cassette. Works just fine
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Old 02-10-18, 04:16 PM
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zacster
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It was always my understanding it would work. I thought it was a 13-29 that was available. I haven't looked in a long time.
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Old 02-11-18, 11:45 AM
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Originally Posted by Lightfoot21 View Post
Simple question for some of you experienced mechanics. I currently have a campy chorus derailleur on a bike with a 12-25 cassette. Can I use the same derailleur if I go to a 12-28 or 12-29 cassette? i believe it is a short cage.
Officially no, although it works for many people because the specifications are based on tolerance for different derailleur hanger configurations and no slack in small ring x smallest cogs.

Officially, short is for doubles and all cogs except 13-29 (and by inference the newer 12-30). Medium is for doubles with all cogs, and triples all except 13-29. Long is for triples with larger cassettes.

Last edited by Drew Eckhardt; 02-12-18 at 01:22 PM.
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Old 02-12-18, 09:32 AM
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Campy 10 speed rear compatability

Thanks for the information. My friend is on the lookout for a new cassette.
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Old 02-12-18, 07:22 PM
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it positively works - i run sc derailleur on 53/39 with 10sp 12-30cassette. just don't use (not the end of the world if it happens) combo 53/29. according to the official campy spec the capacity of the rd is 32, min cog 11. so, if you use compact 50/34 use sc der with 12-28, for standard crankset 53/39 12-29 is fine. 11t pulleys might extend the range even more.
hope this helps.
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