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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 10-20-08, 05:36 PM   #1
bad news hughes
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700X23 tube in 700X22 tire

these are probably ******** questions, but:

1) if i were to run a 700X23 tube in a 700X22 tire, would i need to adjust the psi, or just fill as i would if it were a 700X23 tire? ( i normally keep my tires at about 115)

2) i have the same question but for a 700X23 tube in a 700X24 tire.

the reason i'm asking is i just bought a new tire set with these sizes, and want to use my old tubes.
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Old 10-20-08, 05:37 PM   #2
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doesn't matter.


I wouldn't run it in say, 27x1 1/4 tho.

(although, I have in a pinch and it worked to get home).
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Old 10-20-08, 05:39 PM   #3
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doesn't matter.


I wouldn't run it in say, 27x1 1/4 tho.
cool. didnt think it would, but wasnt sure if i would need to use more or less air bc of the slight size variation
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Old 10-20-08, 05:40 PM   #4
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Don't do it dude.
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Old 10-20-08, 05:41 PM   #5
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Where do you get 700 x 22 and 24 tires?
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Old 10-20-08, 05:43 PM   #6
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Where do you get 700 x 22 and 24 tires?
conti attack/force set

got it for a bike that 23s dont clear the fork
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Old 10-20-08, 05:43 PM   #7
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Thanks
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Old 10-20-08, 05:46 PM   #8
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Don't do it dude.
my sarcasm detector is broken, so i'm not sure if you're serious
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Old 10-21-08, 12:44 AM   #9
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No problem at all.

I once crammed a 29er (700x60) tube into a 28mm tire when I had no other choice.
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Old 10-21-08, 02:06 AM   #10
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It will work . I've stuffed 27" in 700 and 700 in 27" no problems. Run the pressure that you normally would
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Old 10-21-08, 05:07 AM   #11
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Old 10-21-08, 10:17 AM   #12
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Uh-Gi-Oh!!
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Old 10-21-08, 10:24 AM   #13
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I regularly run 700x20-23 tubes in 700x32-35 tires.

My bike's only exploded twice because of it.
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Old 10-21-08, 10:25 AM   #14
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Uh-Gi-Oh!!
Man the fact that you tried to make a joke and then spelled it wrong is in and of itself a facepalm.
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Old 10-21-08, 10:33 AM   #15
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The extra pressure might blow your tire off the rim.

Just kidding it's fine. Inflate to the same pressure as normal.

In the case of the too big tube, there might be some extra folded up rubber but it won't do any harm besides adding some marginal amount of weight and possibly making correct inflation (preventing pinch flats, keeping the beads seated) a little trickier. If anything you will be slightly more flat resistant. It the case of the too small tube, it will be slightly lighter and as a tradeoff it will be marginally less flat resistant.

People in pinches have gotten away with running 28 tubes in a 23 tire, 29er tires on a 26" mtb rim, and worse. When I used to run 28's I regularly ran 23 tubes in them because that was all my lbs had.

The bottom line is, what you are asking about hardly even registers on the scale of audacious tube-tire combos. I would definitely run it and maybe think about getting tubes of the correct size once the old ones have too many patches.

Last edited by mander; 10-21-08 at 10:42 AM.
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