Cyclocross - What's the diff. btwn. Cyclocross frames and Mountain bike frames?

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Haptown
07-08-07, 01:55 PM
Some of you may think this is a dumb question but I don't know anything about cyclocross, I thought I'd peak in at this forum and find out a bit more. I was looking at some pics of cyclocross frames and they looked kind of like mountain frames with drop bars. Is this the only difference?

Psydotek
07-08-07, 01:58 PM
Actually, cyclocross frames are much more similar to road bike frames. In fact from what i've read, the first cyclocross frames were road bike frames. :D The main differences are just some minor geometery tweaks (i.e. higher bottom bracket for ground clearance) and forks/seatstays/chainstays that can accomodate wide tires.
Adagio Corse
07-09-07, 04:58 PM
The modern CX frame itself is a tougher version of a road frame with more upright geometry since an aerodynamic position is not necessary. Beefier forks to handle the cantilever brakes.

fogrider
07-14-07, 10:50 PM
mountain bikes are designed for suspension forks and more heavy duty. some cx frames are the same weights as road versions. mountain bikes also have much more tire clearence.