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#1 |
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Peter Cole <peter_cole_no_spam_at_all@comcast.net> wrote:
>"David Damerell" <damerell@chiark.greenend.org.uk> wrote in message >>Peter Cole <peter_cole_no_spam_at_all@comcast.net> wrote: >>>Presta valves aren't very fragile. If they're failing it's either a Q/C >>>problem in manufacture or a pumping technique issue. >>It's all too easy to bend the shaft once the valve has been unscrewed. >>Yes, that's poor technique, but I'd describe something that breaks easily >>with poor technique as fragile, especially when the alternative is not so >>vulnerable. >Maybe it's a difference in the tubes we buy, but I find the valves difficult >to bend/break -- I've never bent/broke one. I don't just mean the valve body, but the little nubbin on the threaded shaft - if you're cack-handed, which I have been known to be, you can easily use that nubbin to bend the shaft badly. >bike), but I don't know how it's possible to put much force on the valve with >the wheel off unless your hand slips. I don't normally take my wheels off to pump them - I do far more weekly maintenance inflation than post-flat inflation. -- David Damerell <damerell@chiark.greenend.org.uk> Kill the tomato! |
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#2 |
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Peter Cole <peter_cole_no_spam_at_all@comcast.net> wrote:
>"David Damerell" <damerell@chiark.greenend.org.uk> wrote > Peter Cole >>I don't just mean the valve body, but the little nubbin on the threaded >>shaft - if you're cack-handed, which I have been known to be, you can >>easily use that nubbin to bend the shaft badly. >Oh, that. Yes, that does bend easily, but I don't think I've ever bent one of >those either, they just seem to stay out of the way. I don't anymore, but I used to before I worked out how not to. I think it's reasonable to say that _in this respect_ the Presta valve is inferior, because other valves are harder to break. -- David Damerell <damerell@chiark.greenend.org.uk> Distortion Field! |
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