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Old 08-27-23, 04:35 AM
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Wyojon
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Originally Posted by TiHabanero
From your description it seems as though the tube is not "blowing" rather it is forming a leak at an area where the tube passes over the location where a spoke is located in the rim. Since the rims on that wheelset are box section rims, the rim tape sags slightly at that location.
Assuming you are using a tube that is not undersized for the tire size, if the leak is more of a slit rather than a hole, try two things.
1. talc the entire tube. This acts as a lubricant and allows the tube to move during expansion and contraction instead of binding on the rim tape and tearing.
2. grease the inside of the tube. This has the same effect as talc.

Another option is to try a tube one size up from the tire size. 700x25mm tire, use a 700x28mm tube. Note that some tubes cover a wide range of sizes, if the tire is at the upper limit of size, go to the next size range.
One more option as pointed out in a previous post, use a different brand of tube that has thicker walls.
It does tend to have a a slit where it pops.
Where do you get talc? Baby powder is all corn starch now.
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