In article <[email hidden]>, [email hidden] says...
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Does anybody know if there's a noncircular inner tube on the market? I thought there was, but I can't find anything on the net. My bike has a full Nexus setup in the back and it's a royal pain in the ass to remove and reinstall the wheel. Be a lot easier if there was a straight inner tube, sort of like those long balloons that they use for balloon animals.
I have access to a heat sealer. Maybe I can try to make my own by cutting a tube and sealing the ends. Or maybe just good, old fashioned patch glue to seal the ends?
I'm in the same boat and I have the same recollection as you. A few years back I saw the ads for the tubes you mention. I haven't seen them recently. If you do find them, post the source. ---------------- Alex
Alex Rodriguez <[email hidden]> wrote in message news:<cfhd76> >I have access to a heat sealer. Maybe I can try to make my own by
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cutting a tube and sealing the ends. Or maybe just good, old fashioned patch glue to seal the ends?
Doesnt work, i tried all ends up to try to seal some inner tubes for another purpose (no, nothing perverted) and I could do nothing to seal them. Heat just seemed to melt them but they never stuck together, tube sealant couldnt hack the pressure or seal in the corners. Anyways, a straight tube would give you an aweful flat spot where the two bits come together.
Were you testing it outside of a tire? Inner tubes aren't designed to withstand high pressure. Tires do that. Inner tubes just keep the air from leaking. If tubes had to withstand pressure themselves, patches would never hold.
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or seal in the corners.
It might if you clamp the end for an hour or two while the glue sets.
Yeah, outside the tyre, but with less than readable pressure they all just unfolded/unstuck. Must have been sub 5psi.
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Anyways, a straight tube would give you an aweful flat spot where the two bits come together.
I'm thinking of cutting the end in a sawtooth pattern, so the three or four teeth would fold together in the middle, creating an end that's round rather than squashed. Starting with a large 700c tube (40mm or wider) instead of a 26" tube would give enough length to let the two blunt ends butt right up against each other.
Its an idea, but I'll be amazed if you manage it, maybe if you put some sort of inner skin inside each end to 'press outwards' against your glued ends and seal off. The minutest little scrap of a hole is a fast flat - give it a shot but I think you'll be wasting your time really.
