Is this normal for an inner tube?
06-28-08, 05:21 AM
#1
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Is this normal for an inner tube?
Hi everyone,
I recently went to a bike shop to purchase a new inner tube for my bike as my current one has around 5 patches on it and has a slow puncture that I can't locate. Now the shop I went to isn't the most reputable, but it's the only one I have within walking distance.
Anyway, I bought an inner tube (the only kind they had), got home, and started to pump it up to see if it was okay. When I pumped it up however, it went into a really odd shape. I know if it was within the tyre, it would likely be constrained, but I can't help but feel something isn't right. I only pumped it up a little bit, as I was afraid of what might happen if I carried on! By a little, I mean three or four pumps of a largish bicycle pump.
So really, what I want to know is whether it's normal for an inner tube to go like this, or whether I should take it back to the shop and order a decent branded one online. A picture of the tube is below:
Thanks very much for taking the time to read this post!
I recently went to a bike shop to purchase a new inner tube for my bike as my current one has around 5 patches on it and has a slow puncture that I can't locate. Now the shop I went to isn't the most reputable, but it's the only one I have within walking distance.
Anyway, I bought an inner tube (the only kind they had), got home, and started to pump it up to see if it was okay. When I pumped it up however, it went into a really odd shape. I know if it was within the tyre, it would likely be constrained, but I can't help but feel something isn't right. I only pumped it up a little bit, as I was afraid of what might happen if I carried on! By a little, I mean three or four pumps of a largish bicycle pump.
So really, what I want to know is whether it's normal for an inner tube to go like this, or whether I should take it back to the shop and order a decent branded one online. A picture of the tube is below:
Thanks very much for taking the time to read this post!
06-28-08, 05:30 AM
#2
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Keep the tube inflated the way it is right now and go back to your LBS. You need to have the tube True'd.
06-28-08, 05:45 AM
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Don't pump up a tube like that before you put it in the tire. Pump it just a touch in order to seat it, that's all. Put this tube in, it will be fine.
06-28-08, 06:34 AM
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Don't inflate tubes like that so much without it being in the tire - it's liable to blow. You don't need it that big even to search for a pucnture. And that shape is normal, without the tire to encase the tube it will go into grotesque shapes.
06-28-08, 07:55 AM
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They do that to varying extents. I don't know that it's the sign of a cheap or bad tube. It probably means that one part is thicker than the other by a tad. But if it was all as thin as the thinner part, that wouldn't be an improvement, either.
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06-28-08, 11:12 AM
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You must have filled that too way to much for it to blow like that and still keep its shape.
