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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 09-13-10, 03:09 PM   #1
bluenote157
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1x8 with 11/30t cassette. Looking for recommendations on chainring size.

I'm going to be using this for winter beater/trail riding and maybe a cx race or two...
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Old 09-13-10, 05:04 PM   #2
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Obviously it depends on the hills you want to ride. I think a 38T or 39T would be great with that cassette.
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Old 09-13-10, 06:26 PM   #3
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I race with a 12-27 and pretty much leave it in the 39 ring, so I think that would be pretty good. MA is a bit hillier than MD, but 39x30 should be pretty good for almost anything short of a true hill climbing ride.
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Old 09-13-10, 06:38 PM   #4
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thanks guys.. now i just need to find a cheap 39t replacement for my beat-to-$hit ultegra compact. Any suggestions??
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Old 09-13-10, 06:49 PM   #5
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Is the crank shot, or just the rings?

If the crank is still good, you could probably put a 110 bcd FSA ring on there with 39t and use the outside ring for a chain guard. Might look a little funky, but it's a cross bike!

Harris Cyclery also has 39t 110bcd rings from TA, which are nice, and "Rocket Rings," which are cheap.
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Old 09-13-10, 07:48 PM   #6
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nope..that is exactly what i was thinking of doing. Ugly Rocket Rocket ring in the inner with my existing outer to cover up the fugly rocket ring.

Thanks
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Old 09-13-10, 10:30 PM   #7
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reccomendation

you could also run a chain guard if you wanted a little cleaner look. that's what i am doing on the new 1x10 i just built up.
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Old 09-13-10, 10:39 PM   #8
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Also.... this is how I decided what size chainring I wanted. http://www.sheldonbrown.com/gears/
I put in 3 different chainring sizes coupled with cassette I will run and compared it to what stock cross setups would be.
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