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Old 06-25-06, 07:13 PM   #1
spinnaker
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26 inner tubes in 28 tires?

I am currently running 26 tires on my road bike. I am considering bumping up to 28s for my tour. I have a bunch of 26 tubes. I have read that it is actually a good idea to use a smaller tube to prevent pinches. Is using a 26 tube in a 28 tire too much of a stretch. Pun intended.
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Old 06-25-06, 08:15 PM   #2
WestOz
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I've done it in an emergency. Stretched a thick thorn proof one onto a 28. It held, but when rubber stretches it becomes porous.

I once had a car that had the wrong tubes in. They were stamped the right size but were actually a size too small, and I kept getting punctures.
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Old 06-26-06, 02:17 AM   #3
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The difference in sizes is too small to cause a problem. Been there, done that.
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Old 06-26-06, 06:00 AM   #4
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I have 28 and use 18-23 tubes all the time. I rarely have flats, the last one was due to the tire wearing out and a piece of glass getting embedded in the tire. I am also assuming you are talking about 700c tires. Plus the tubes being smaller make them easier to install IMO.
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Old 06-26-06, 01:03 PM   #5
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I run the skinnier road tubes in the wider touring tires all the time without any problems. Must flats are caused by wide tubes getting pinched-- skinny tubes are easier to install. Plus, many touring tires that are labled 28-35 mm have so much rubber and belts in them that they are close to 25-26 mm inside anyway.
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