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#11
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Performance brand tube failures
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#12
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Performance brand tube failures
I got 3 luna light 700c tubes and 2 of the 3 were bad. The tubes got holes
or splits in them and I never even rode them. I installed them by hand carefully and overnight in the garage the tire went flat. I am bringing them back for a refund this weekend. cel "(PeteCresswell)" wrote in message ... Per : Anyone been having trouble with Performance Brand tubes failing at the valve stem? No but my current batch of 2.25" MTB tubes is so old that it probably doesn't mean much - bad batches and all that. Only negative I seen w/Performance tubes is that so many of them have such long valve stems. Probably not a physical problem - just looks kind of weird. -- PeteCresswell |
#13
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Performance brand tube failures
Yeah, they told me to bring them back for a refund too, but they are in
the trash. They did seem surprised when I told them that I think that they have a quality problem. These are the light weight road tubes, BTW. |
#14
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Performance brand tube failures
Bill wrote: wrote in message oups.com... Anyone been having trouble with Performance Brand tubes failing at the valve stem? My buddy has had at least 4 of them recently that have failed right at the base of the stem. We checked the hole in the rim for sharp edges, but didn't find any problem. One other possibility. I had a pair of Hutchinson tires a couple of years ago that caused tube failures adjacent to the stem. The tire's bead area was so large that the tube by the valve was suspended between the two beads and could not seat against the bottom of the rim. Over time the tube would fail at the unsupported area that was next to the valve. I ride the Huthcinson tires ( not with Performance tubes) and have no problem with valve stem failures |
#15
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Performance brand tube failures
(PeteCresswell) wrote: Per : Anyone been having trouble with Performance Brand tubes failing at the valve stem? No but my current batch of 2.25" MTB tubes is so old that it probably doesn't mean much - bad batches and all that. Only negative I seen w/Performance tubes is that so many of them have such long valve stems. Probably not a physical problem - just looks kind of weird. -- PeteCresswell Long valve stems MIGHT be part of the problem if you don't have deep wheels. So much of the valve stem protrudes from the wheel that it makes a pretty long lever that you attach the pump to. If you use a hand pump, the rocking back and forth might weaken an already poorly joined valve stem. |
#17
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Performance brand tube failures
wrote:
Anyone been having trouble with Performance Brand tubes failing at the valve stem? My buddy has had at least 4 of them recently that have failed right at the base of the stem. We checked the hole in the rim for sharp edges, but didn't find any problem. Is there any chance that he got any oil on the stem? This can happen either by getting it on the rim strip during a wheel build, or (possibly) by it being dripped from the chain. If this is the case, you'd probably notice a residue on the rim. Mark Hickey Habanero Cycles http://www.habcycles.com Home of the $695 ti frame |
#18
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Performance brand tube failures
Carl, looks like you put a bit of thought into this. I can't fault your
analysis, as long as the same sideways movement y is applied to both. But I bet that the longer stem could be pulled thru a greater arc with the same force applied. I need to dust off the old slide rule. |
#19
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Performance brand tube failures
Mark Hickey wrote: wrote: Anyone been having trouble with Performance Brand tubes failing at the valve stem? My buddy has had at least 4 of them recently that have failed right at the base of the stem. We checked the hole in the rim for sharp edges, but didn't find any problem. Is there any chance that he got any oil on the stem? This can happen either by getting it on the rim strip during a wheel build, or (possibly) by it being dripped from the chain. If this is the case, you'd probably notice a residue on the rim. Mark Hickey Habanero Cycles http://www.habcycles.com Home of the $695 ti frame No chance of getting oil on it. He does deflate the tires after each ride. Maybe the deflate-inflate cycles cause it to weaken. |
#20
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Performance brand tube failures
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