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Cyclocross Geometry (vs Road)

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Cyclocross Geometry (vs Road)

Old 03-26-18, 06:46 PM
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Cyclocross Geometry (vs Road)

Close to 10 years ago I bought a custom steel frame through my lbs after being fit for it. I had/have a neck issue so the bike is more upright. Has always felt fine to this day, though I still get the neck soreness frequently. I have a Chiro and RMT and itís pretty good now.

But I wanted to ask about cx bike fit. When I bought my Felt cx bike a few months ago I brought in the road bike and the lbs fit the cx bike to nearly the same fit as the road bike (saddle height and setback, reach, bar drop from saddle, etc). Changed the stem and felt good. Same saddles.

Iíve been on the cx bike a lot recently. Longest ride over two hours. Road bike on the trainer, and a few outdoor rides (longest less than 2 hrs). Thing is, the cx bike feels better and Iím not sure why. One thing is that the cx bars are 44cm wide vs 42cm on the road bike. Same saddles. Any thoughts on this? The cx bike feels more stable as well. And I ride it on roads, trails and gravel.
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Old 03-26-18, 07:05 PM
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I am more comfortable on a lot of bar to saddle drop. or sitting up. anywhere in between and it hurts.
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Old 03-26-18, 07:31 PM
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If you are really curious, swap the tires, or swap the bars, and see if that changes your preference. It is also possible the higher bottom bracket (assuming your CX bike has a higher BB), might change things. It would make me feel less stable, but who knows? The paradox is that the further you are from the ground, the easier it is to balance.
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Old 03-26-18, 07:45 PM
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Wider bars, could also be less drop and reach in the bars combined with lever position on the bars.

Depends entirely on how you sit on the two bikes. The frame angles between your CX and roadie might be similar, but the cockpit almost certainly isn't....unless your LBS substituted the same handlebar onto both bikes and placed it identically.
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Old 03-26-18, 07:58 PM
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Feels more stable, you say? Longer wheelbase, a bit more fork rake, and wider tires could all combine to account for that.
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Old 03-27-18, 03:42 AM
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Originally Posted by Marcus_Ti
Wider bars, could also be less drop and reach in the bars combined with lever position on the bars.

Depends entirely on how you sit on the two bikes. The frame angles between your CX and roadie might be similar, but the cockpit almost certainly isn't....unless your LBS substituted the same handlebar onto both bikes and placed it identically.
I think this is it (frame angles, that impacts how I sit). The reach is 1/2 cm longer and lower on the cross bike. The road bike is generally ok, and Iíve always thought it very comfortable to now. I will try wider bars but the rest ďmeasuresĒ very similar so I wonít make any other adjustments for a while. Perhaps the wider bars open up my shoulders which helps my neck pain...
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Old 03-27-18, 03:03 PM
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Originally Posted by DrIsotope
Feels more stable, you say? Longer wheelbase, a bit more fork rake, and wider tires could all combine to account for that.
Given the same ht angle more rake=less trail so that will make a bike less stable rather than more(small rake increase most likely won't be very noticeable). Tire circumference also effects trail to some degree.

reagards, Brian
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Old 03-27-18, 03:31 PM
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If the extra reach of wider bars is more comfortable you might be surprised to discover more bar drop also increases comfort. For me tons of bar drop feels great, higher bars and longer reach is hell.
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Old 03-27-18, 07:10 PM
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My cx bike is more stable too. It's the trail. Road trail is typically 57mm, cx is often 10mm more.
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