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#1
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Is it worth trying to patch this tube?
The tube is a pricey Vittoria latex tube. See the white dot at the base of the valve stem in the black? That's where the hole is. I was thinking of cutting a hole in the center of a Rema patch, and slipping the patch over the valve stem to cover the area, glued down with patch cement.
Last edited by MikeD; 04-14-2024 at 02:44 PM. |
#2
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Would a little squirt of sealant work as well? Pump up, shake by the hole.
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#3
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I wouldn't fix that. It would likely fail.
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#4
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I've never had success patching in that location.
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#5
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I won't patch around a valve stem. No telling what other part around the valve might go next, maybe catastrophically. Teeth and collarbones cost more than a new tube. Even expensive ones.
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#6
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Additionally check the valve hole at the rim to make sure there are no burrs or sharp spots that may have caused that and will be a problem with the next tube.
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http://less-than-epic.blogspot.com/ |
#7
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I repair tubes until they're completely unsalvageable...I think 11 patches is my record.
unfortunately, any hole near a stem usually ends in wasted effort. save yourself some frustration and just toss it. |
#8
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No…..
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#9
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Seems like a risk not worth taking.
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#10
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It seems that every time I try to patch a hole adjacent to the valve, the patch fails sooner or later.
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It don't mean a thing, if it ain't got that certain je ne sais quoi. --Peter Schickele |
#11
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wrap a bit of sandpaper around a chopstick and round off the sharp edge of the valve hole in the rim, it's just going to happen again.
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#12
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I patch latex tubes, but when they fail at the valve stem I throw them away or cut them up for patch material.
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#13
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Thanks for the info. I'm going to bin the tube or cut it up for patches, although I think I'm going back to light weight butyl tubes. I've had these wheels for a long time and this is the first time I've ever had a flat at the valve stem and this tube has been in there for at least a couple of years. I didn't feel any burrs at the valve hole, but I think the edge is a bit sharp radius so I'll chamfer it and maybe put some rim tape there, since the rim uses no rim strips.
I think part of the problem was these tubes have no valve nut and every time I pump the tires, the valve gets pushed up into the tire. All that extra flexing may have contributed to the failure. Last edited by MikeD; 04-15-2024 at 02:32 PM. |
#14
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Quote:
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#15
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I only just saw this. Yes, it's not patchable. Can I check, though, when you're putting your pump chuck on, how hard are you pressing the chuck in? Silca says push it on very gently. I got little tears just outside the black rubber patch until I followed that advice. You don't want the stem moving back into the rim when you push the chuck on.
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