[QUOTEbroc11]haven't been using her much lately and just noticed it flat yesterday, don't know why the valve would just go like that without being disturbed
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You didn't say how it failed so I'm guessing it didn't pop out but is still in the rim.
Maybe it didn't 'just go like that'. It might have sustained a slow leak. Have you tried to fill the tire? Fortunately you found it flat instead of it going flat while riding.
I've never seen a stem like that and wouldn't have chosen it only because I'd assume centripetal force would be a problem and stress the base as a straight stem would not. And that's apparently what happened. Somewhere in the base at the rim the stem has cracked.
The stems I've seen are all metal with rubber washer(s) and a nut. They don't have the flex that your stems have. I'd think yours might be ok for low speed vehicles but that bend combined with centripetal force and pushing against when filling with air just wouldn't inspire my confidence. And your experience reinforces that.
Someone here has a problem with a leaky stem (standard I think) and was able to shore it up with tape until they could get it replaced. Maybe you'd get lucking with some sealant and tape to stabilize it. I'd try it only if I was going to a very nearby shop to get it replaced.
There are far better 90º stems. Or you could use a standard stem and put a 90º elbow on it when filling and remove it immediately afterwards.
[/QUOTE]
You didn't say how it failed so I'm guessing it didn't pop out but is still in the rim.
Maybe it didn't 'just go like that'. It might have sustained a slow leak. Have you tried to fill the tire? Fortunately you found it flat instead of it going flat while riding.
I've never seen a stem like that and wouldn't have chosen it only because I'd assume centripetal force would be a problem and stress the base as a straight stem would not. And that's apparently what happened. Somewhere in the base at the rim the stem has cracked.
The stems I've seen are all metal with rubber washer(s) and a nut. They don't have the flex that your stems have. I'd think yours might be ok for low speed vehicles but that bend combined with centripetal force and pushing against when filling with air just wouldn't inspire my confidence. And your experience reinforces that.
Someone here has a problem with a leaky stem (standard I think) and was able to shore it up with tape until they could get it replaced. Maybe you'd get lucking with some sealant and tape to stabilize it. I'd try it only if I was going to a very nearby shop to get it replaced.
There are far better 90º stems. Or you could use a standard stem and put a 90º elbow on it when filling and remove it immediately afterwards.
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