Can CX wheels be us...
 

[Closed] Can CX wheels be used as 29ers?

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And vice versa? Are all the tyres and tubes interchangeable? (Width permitting, of course)


 
Posted : 13/06/2013 9:39 am
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I've put some 700-33 cx tyres on my stans race gold wheels
And works just fine

It's just the width you need to worry about


 
Posted : 13/06/2013 9:48 am
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Dropout spacing could be an issue too. 29ers will be 135mm (or 142 X12, etc.). CX are generally 130mm spacing like road bikes, but some might be 135mm, and some might even be 132.5mm designed to swing both ways (probably more likely with steel frame).


 
Posted : 13/06/2013 10:01 am
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CX are generally 130mm spacing like road bikes, but some might be 135mm

My [url= http://www.rosebikes.co.uk/article/rose-pro-dx-cross-4400-compact-612199/aid:612230 ]Rose CX bike[/url] came with 135mm Mavic CrossRide 29er wheels on it (and Racing Ralphs).


 
Posted : 13/06/2013 10:11 am
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Most disc CX bikes will have 135mm spacing. Running Stans Crest Hope Hoops 29ers here with no issue on my Kinesis Pro6. Gives quite a wide tyre profile which may or may not be your thing. I'm not bothered either way.

I'll probably swap for Iron Cross rims soon, but only because I'll use the Crests on a new 29er, and not because I'm desperate to change.

I'd say that proper CX rims would be okay for MTB to a point, as long as you aren't looking at anything too narrow and hoping to run wide tyres.


 
Posted : 13/06/2013 10:17 am
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My Droessiger CX bike came with 130mm Shimano 105 / Mavic Open Pro wheels.


 
Posted : 13/06/2013 10:17 am
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Nearly all disc CX bikes now come with 135mm dropouts to make it easy to run/spec 29er disc wheels.


 
Posted : 13/06/2013 10:20 am
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This is a revelation to me. I've been having trouble with

a) Finding a cheap front wheel to try my Inred out as a 69er

b) Finding a nice wide rim for Ms Shermer's Genesis Day One.

Bingo!


 
Posted : 13/06/2013 10:28 am
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My commuter (pompetamine) has superstarcomponents 29er wheels on.

My CX bike is running Hope Pro 2 Evos and lighter rims.

The only things to look for is that CX wheels may be built up light rather than strong. Also the rims may be narrow so that CX tyres fit well so running wide mtb tyres may be an issue. I had the opposite problem in that the mtb rims were too wide to get narrow slick on so I'm unning a 32mm not a 25mm.


 
Posted : 13/06/2013 10:52 am
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I had the opposite problem in that the mtb rims were too wide to get narrow slick on so I'm unning a 32mm not a 25mm.

I'm running [url= http://www.conti-tyres.co.uk/conticycle/ti%20grand%20prix%204%20season.shtml ]28mm Conti GP 4 Season[/url] on my [url= http://www.mavic.com/en/product/wheels/mountain-bike/wheels/Crossride-Disc-29 ]CrossRide 29er rims[/url] (700x19c / ETRTO 622-19).

They seem fine, but I probably can't go much narrower. I think.

(Mavic recommend a minimum tyre width of 1.5 - which I [i]think[/i] translates to 28mm. [url= http://sheldonbrown.com/tire-sizing.html#width ]Sheldon certainly reckons 28 is safe minimum on a 19c rim[/url])


 
Posted : 13/06/2013 11:33 am
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1.5 is more like 38 I think?


 
Posted : 13/06/2013 11:37 am
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In theory, but "Brown's Law Of Tire Sizing" from the same Sheldon page:

"If two tires are marked with sizes that are mathematically equal,
but one is expressed as a decimal and the other as a fraction,
these two tires will not be interchangeable."

๐Ÿ˜€


 
Posted : 13/06/2013 11:41 am
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[url= http://www.ctc.org.uk/cyclists-library/components/wheels-tyres/tyre-sizes ]According to the CTC[/url] the rule of thumb is:

"The ideal relationship between tyre and rim section is about 1.8 to 1, but any tyre from 1.4 to 2.2 times should fit"

So using that a 622-19 rim [i]should[/i] take between 26.6 to 41.8 (which roughly tallies with Sheldon's table).

Anyway, it seems to run just fine ๐Ÿ˜€


 
Posted : 13/06/2013 11:52 am