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short cage long cage.. how do you determine?

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short cage long cage.. how do you determine?

Old 09-16-11, 06:01 PM
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short cage long cage.. how do you determine?

How do you determine what cage would work best..
I have a campy daytona 10speed group except for
the rear derailleur.. double not triple..
is the short for double and long for triple?

thanks Dwight in New Orleans
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Old 09-16-11, 06:06 PM
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Yes. Generally, this would be the case. However, depending on the Range of your cassette, and whether or not your crankset is a COMPACT double, you MAY require a longer cage. Some of them come in a mid-length, also.
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Old 09-16-11, 06:10 PM
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no it's not compact and I'm in the flats most of the time. 11-23 cassette 53-39 rings
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Old 09-16-11, 06:12 PM
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Campy makes (made?) three derailleur cage lengths, short, mid and long. You calculate the "total teeth" ((big chainring-small chainring) + (big cog-small cog)) and that determins which one you need. Campy's web site tells you how many total teeth each cage length will handle. For example for a compact crank with a 12x25 cassette the total teeth value is (50-34)+(25-12) = 29 so you need a rear derailleur that can wrap 29 teeth or more. Too many is better than not enough if you are between sizes.
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Old 09-16-11, 06:25 PM
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thank you
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Old 09-16-11, 06:33 PM
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Branford's page on Campy RD wrap capacities: https://branfordbike.com/articles/rea...leurs-pg62.htm
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Old 09-16-11, 06:39 PM
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Originally Posted by Shimagnolo
Branford's page on Campy RD wrap capacities: https://branfordbike.com/articles/rea...leurs-pg62.htm
The Campagnolo 2009 technical manual is a little more generous on the short cage.
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Old 09-16-11, 06:40 PM
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thank you thats great
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