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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 03-10-05, 08:53 AM   #1
Essy
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Cross Check size?

Hey all -

I'm thinking about getting a cross bike for commuting since my single speed mountain bike is a bit unwieldy and I was looking at the Cross Check since I can get the frameset from aebike at a good price. The only thing that I am unsure of is the sizing. My roadie (Specialized Allez) is a 52cm, but from what I've managed to glean from the forums, cross bikes run large. Is this correct? Does that mean that I should invest in a 50cm frame? I've looked at the geometries online, but since I am unsure where each company measures from, conversion from mm to cm is hard, etc, I'd rather ask then get the frame and have to try to sell it. I was also interested in the Soma double check, but I'm not sure I can justify the extra price just because I think blue is purdy...

Oh, and I promise to never, ever refer to myself as someone who does cyclocross. I will "commute using my cyclocross bike."
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Old 03-10-05, 08:55 AM   #2
trlpmp
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Thats what I use mine for.
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Old 03-10-05, 10:39 AM   #3
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I am 5'6" and ride a 52cm Trek 5200 carbon road bike. I was in the same position as you, and bought a Surly CrossCheck frame sight-unseen. My frame choice was based on comparing my road bike geometry to the geometry listed on Surly's website. I ended up with a 46cm cross check frame and it fits me perfectly. I have an ultegra triple group on mine, with Avid Shorty brakes, eggbeater pedals, and Bontrager Extralight wheels. It weighs in at just under 20# and makes a great road training and touring bike. You need to look at the standover height, and most importantly, the EFFECTIVE top tube length (the frame has a sloping top tube) when comparing to your road bike. It is easy to end up with a cyclocross-style frame that is too high and too long.
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Old 03-10-05, 11:12 AM   #4
Essy
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Huh. Interesting, I never thought I'd have to drop to a 46cm! I'm also 5'6" so we're probably similar - although I imagine if you are male then my legs are a bit longer (short torso, long legs, yippee female anatomy!).

I plan on building this one up as a single speed to start since I'm a student and less parts = cheaper. My biggest concern will be putting on bomb-proof wheels since the potholes in Boston can eat you if you are not careful. It's also why I have emergency flares, in case I fall in and cannot get out.
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Old 03-10-05, 02:16 PM   #5
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I chose my Cross-Check frame size based on the top tube length. I'm comfortable on a 56 cm top tube so I went with a 54.
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