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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 10-12-05, 12:14 PM   #1
ibrown
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Building a CX Bike..Help

My last USCF race has come and gone, so I am dying to get out there in a CX race. I usually Mtb all winter, but I'm wanting CX like crazy. So...

I've got an extra older giant road bike with 8spd with 105 der. front and rear, open pros to unknown shimano hubs, a 600 crank, and some extras laying around from mtb's too. I was thinking I could just score a CX frame and swap the components from the Giant except for a couple pieces.

The question is....would these parts work, and if so, what frame should I get. By the way, it will be ridden pretty much only on trails and races, and I don't have much of a budget.
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Old 10-12-05, 07:19 PM   #2
kbabin
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Couple of things to think about.

1. What is the cog range of your rear cassette? 11x21 wouldn't work to well.
2. What chain rings does the crank have? Most cross bike use 48x39 or something close to that. Or they run single rings up front 42ish...
3. Pay attention to the rear spacing on the frame. I would guess that your hub is 130mm and some of the newer frames are 135mm... So check both before you by.

Here are a few frames that list rear spacing that would work with both 130 and 135 hubs...

http://www.surlybikes.com/crosscheck.html

http://www.somafab.com/frames.html

I browsed the web site for a cross bike specs at cannondale, surly, and others to see what they were doing to give me ideas.

Hope that helps...

Also, you might check to see if the race allows mountain bikes. You might try that before spending cash on a new bike. But I understand the "need" to build, it can be a sickness.

Good luck,

Kevin
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Old 10-14-05, 10:06 AM   #3
Phantoj
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8-speed cassette should mean 130mm spacing.
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