Cyclocross - Fantom Cross Pro owners...FD clamp size?

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euphoria
01-15-08, 06:51 PM
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.
justinb
01-15-08, 09:56 PM
My Fantom Cross (not Pro) uses a 31.8 clamp.
If seatpost is 27.2 the outer seat tube diameter is generally 31.8mm.
euphoria
01-16-08, 12:10 PM
If seatpost is 27.2 the outer seat tube diameter is generally 31.8mm.
the CAAD9 is a fickle mistress, then.
~stella
01-16-08, 12:31 PM
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.
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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