Keep ripping the valve off !
10-30-09, 07:34 AM
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Isn't it amazing how spit works as both a lubricant and a sealant? You'd think it would not work as both, but somehow it does, sometimes at the same time.
10-30-09, 09:53 AM
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Make a "gasket" around the valve stem of the tube. Use a small square of rubber (maybe from and old tube) and poke a hole in it. Slide it on over the valve stem before putting it on the rim.
08-19-12, 05:04 PM
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Uggg, just ripped one off for the nth time. I have ripped off so many. I try all the things mentioned in this thread and I do have a pump with a hose. I'm guessing that my pump just doesn't release well like it should. Unfortunately I dont have money for a new one and now I have no tube!
08-19-12, 05:25 PM
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As Chuck G suggested, tubes without threading. It may be that you may muscling it a little too much when disconnecting your pump's head from the valve stem. The slick valve stem may actually cause your pump head to disconnect prematurely at high pressures but that's preferable to what has been happening.
08-19-12, 09:10 PM
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I've torn a couple just by not being careful with my floor pump. Solution: use care when inflating.
08-20-12, 12:50 PM
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08-20-12, 02:13 PM
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For those managing to rip out their valves, are you holding onto the stem with one hand while pulling off the pump head with the other? If not, why not? 
08-20-12, 02:25 PM
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08-20-12, 02:33 PM
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I've drilled some rims out. Nothing super expensive, though, $100 rims at the most.
With wide rims making a comeback in the road world, running shraeder will be easier than in the days of the 17mm rim
With wide rims making a comeback in the road world, running shraeder will be easier than in the days of the 17mm rim
08-20-12, 03:52 PM
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When I use my floor pump, I don't need to support the pump head. Uh, I do ensure that the pump head is not locked before I try to remove it. But other than that... I am not really gentle about this at all.
I have several different bikes with different valves, so I've experienced them all. And I've been cycling for a long long time. Yes, I have road bikes, and mountain bikes and cruisers... you name it.
Really this is a problem? Wow.
08-21-12, 03:01 AM
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Uggg, just ripped one off for the nth time. I have ripped off so many. I try all the things mentioned in this thread and I do have a pump with a hose. I'm guessing that my pump just doesn't release well like it should. Unfortunately I dont have money for a new one and now I have no tube!
08-21-12, 06:40 AM
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Inspect the valve stem hole in your rim. It's possible that there are some sharp metal burs left from the boring of that hole. When I had my last wheel built, I went to pick it up and the rim had a presta valve hole. I told them I use schrader, so they bored it bigger for me. I ended up ripping a valve stem off a couple of times. Gave the hole a few passes with a small file and bingo, no more issues.
08-27-12, 01:21 PM
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I did try that, but it didn't come off. I had to hold the valve/rim with one hand and pull with all my might on the other. I have had this happen 3-4 times over the past 2 years I would guess. On multiple bikes with both kinds of valves. The only thing constant between the incidents was me and the pump. Since I'm not inclined to blame myself, I blame the pump. I dont have money for a new pump though, I'm going to try lubing the valve a little next time.
08-28-12, 12:47 PM
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What kind of tubes are you using? Cheap tubes aren't reinforced at the base of the valve, good tubes are.
