Re: Very Slow Leaks.

Am Mon, 5 May 2025 18:25:26 -0400 schrieb Frank Krygowski
<frkrygow@sbcglobal.net>:

On 5/5/2025 4:22 PM, cyclintom wrote:

...

They look like hair thin wire punctures bot there are usually no trace of a wire in the tire inside or out. To even find them you have to pump the tube way up and put it under water and look for a very slow leak which mafes it almost impossible to patch. So I have to replace the innertube.

>
That last bit makes no sense. Over 50+ years of riding I've had plenty
of leaks so slow as to require water submersion to detect. They were all
able to be patched.

Same here, mostly. I had a slow leak once that couldn't be patched
because it was near the valve.

>
If you don't want to take the time, or don't know how to patch, that's
fine. You're allowed to use new tubes.

Depending on where and how a bike is ridden, I recommend new tubes.
While I sometimes successfully patched tubes on my 12 km commute, I
wouldn't use patched tubes on long distance tours in hilly areas,
anymore. Somebody in de.rec.fahrrad reported a series of tests breaking
hard on fast ridden lang descents, while measuring the rim temperature.
It needs less temperature to unglue a patch than to destroy an unpatched
tube.

Patching and then riding a litte more carefully is one thing, but a tube
is cheap enough to avoid that risk.


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