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Recreational Cyclocross and Gravelbiking This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like :The Dirty Kanza". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

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Old 01-15-08, 07:51 PM   #1
euphoria
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Fantom Cross Pro owners...FD clamp size?

I've run into a snag with my latest road build and I need to know whether I can galvanize the front derailleur off the Moto. I would just take it off but I don't want to mess up the alignment if it isn't a 34.9 clamp.
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Old 01-15-08, 10:56 PM   #2
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My Fantom Cross (not Pro) uses a 31.8 clamp.
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Old 01-16-08, 12:39 AM   #3
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If seatpost is 27.2 the outer seat tube diameter is generally 31.8mm.
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Old 01-16-08, 01:10 PM   #4
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Quote:
Originally Posted by MIN View Post
If seatpost is 27.2 the outer seat tube diameter is generally 31.8mm.
the CAAD9 is a fickle mistress, then.
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Old 01-16-08, 01:31 PM   #5
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Quote:
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If seatpost is 27.2 the outer seat tube diameter is generally 31.8mm.
This is true for most aluminum frames which usually have over-sized tubing. Most steel frames however, use 28.6 braze on adapters. The third "standard" is 35.0mm which a lot of carbon frames use.
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Old 01-16-08, 01:33 PM   #6
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While we are on the subject, my steel Lemond Poprad (2007) is a 31.8mm ST diameter with a 27.2mm seatpost.
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