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Fit Cyclocross Bike with Road Wheels (Disc Brakes)

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Cyclocross and Gravelbiking (Recreational) 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 : "Unbound Gravel". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

Fit Cyclocross Bike with Road Wheels (Disc Brakes)

Old 09-21-14, 09:12 PM
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Fit Cyclocross Bike with Road Wheels (Disc Brakes)

Hi Everybody.

Ok so I'm a complete Newbie to cycling and to this forum.

I was recently looking for a good all-round bike and decided on a Fuji CX1.1.

In short - I love this bike!

I've ridden it both on and off-road and have been really happy with it's performance.

However, I'm finding myself looking for a little extra speed on my road rides and I've made the decision that I need an additional set of road wheels to swap out to when needed. My FUJI CX is currently fitted with Vera City’s respectably wide 700 x 32c tyres.

Are there many options out there to swap to a speedier set of road wheels equipped to be fitted with Disc Brakes (BRAKE SET:Avid BB5, mechanical disc for road, 160mm rotors).

My bike specs can be found here 2014 Fuji Feather CX | Fuji | Cyclocross Bikes for sale in Glenelg | 102297271

I'd really appreciate any advise and hope I've given enough info to allow somebody to assist.

Thanks,

Damien
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Old 09-21-14, 09:40 PM
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Nothing wrong with 32c slicks. You really won't gain all that much speed with 28 or 25c. I run my Soma Double cross on either offroad knobblies (32c) or 32c slicks and the slicks are plenty fast at 100psi.
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Old 09-21-14, 10:49 PM
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You need to determine whether your rear hub is 130mm or 135mm spacing.
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Old 09-22-14, 07:56 AM
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It's always good to measure, but your current wheelset is almost certainly 135mm rear spacing (since most CX bikes are designed to take MTB disk hubs). Just about any CX or 29'er disk wheelset should work. The newer road disk wheels with 130mm spacing probably won't. I suspect your current rims are 18mm width which means you could run any road slicks on them (even 23s). I'd be tempted to mount 25 slicks on the current rims and get a set of 29'er disk rims that are a little wider (and maybe tubeless compatible) to mount your off-road tires.
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Old 09-22-14, 08:13 AM
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I started with the 32mm Conti Cross race tires that came with the bike and put on a 22-24mm set of slicks for a century and noticed a huge improvement.

Then I went from those to a set of 42mm Cross Rides and noticed almost no difference in rolling resistance or speed, only a higher sensitivity to crosswinds. The Crossrace has an interrupted center tread pattern, the Crossride a continuous one.

It's all about the tire design and inflation pressure. Width has little to do with your speed potential.
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Old 09-22-14, 09:11 AM
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Originally Posted by TGT1
I started with the 32mm Conti Cross race tires that came with the bike and put on a 22-24mm set of slicks for a century and noticed a huge improvement.

Then I went from those to a set of 42mm Cross Rides and noticed almost no difference in rolling resistance or speed, only a higher sensitivity to crosswinds. The Crossrace has an interrupted center tread pattern, the Crossride a continuous one.

It's all about the tire design and inflation pressure. Width has little to do with your speed potential.
Agree for speed, but acceleration with a big and likely heavier tyre is effected.

I can use a 25mm road tyre on the 24mm wide DT Swiss rims I have, this feels quite different from the 38mm gravel tyres in acceleration.

like other posters said, measure the rim width you have and maybe weigh them, then decide if you want a heavier duty wider or lighter duty second set
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Old 09-22-14, 09:20 AM
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Originally Posted by alex jb
Agree for speed, but acceleration with a big and likely heavier tyre is effected.

I can use a 25mm road tyre on the 24mm wide DT Swiss rims I have, this feels quite different from the 38mm gravel tyres in acceleration.

like other posters said, measure the rim width you have and maybe weigh them, then decide if you want a heavier duty wider or lighter duty second set
I'm running 25mm road tires on 25mm (HED) rims with no issues.
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Old 09-22-14, 10:45 AM
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The biggest difference between 700x32 tires and 700x28 tires is that most tires that are built for speed don't come in 700x32. Tires that do come in 700x32 are typically geared toward touring or commuting. That's not to say there aren't good tires in this size -- I've got 700x35 Schwalbe Marathon Supremes on my commuter and they're great but not the tire I'd pick for a group ride or a century. Something like the Continental GP 4 Seasons in 700x28 feels a good bit faster. It isn't actually much faster, but it feels faster and over a significant distance I think it induces less fatigue for the same rate of travel.
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Old 09-22-14, 07:03 PM
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Originally Posted by alex jb
Agree for speed, but acceleration with a big and likely heavier tyre is effected.

I can use a 25mm road tyre on the 24mm wide DT Swiss rims I have, this feels quite different from the 38mm gravel tyres in acceleration.

like other posters said, measure the rim width you have and maybe weigh them, then decide if you want a heavier duty wider or lighter duty second set
Yes it does feel different, but it's a perception that lasts milliseconds, (a couple of wheel revolutions) rather than something that significantly affects your ability to accelerate.

Unless you are racing or doing a lot of steep climbs the difference in acceleration is insignificant.

The biggest difference is when you blast down by a side canyon and a crosswind gust catches the double the side area of your front tire. I've never ridden deep CF rims, but they should be even worse in that regard.
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Old 09-22-14, 08:20 PM
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I put Boyd Altamont's Disc wheels on my commuter and use 25's. I get plenty of speed from them and they weigh in at just over 1650g. They are 24mm wide and will fit a 32/35 easily if needed.


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