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07-28-04, 08:33 PM
I have an ongoing problem with inner tube valves failing. My presta valves always tear in that 1/8" rubber nub which connects the valve to the tube. This happens about every 300 miles of riding. I've filed and sanded the valve holes in the rims, and replaced the tape. But this hasn't helped.
I showed my latest torn valve to a wrench I respect. He said that when I remove the pump head from the valve, after inflating the tire, the head yanks the valve--and it's rubber nub--into the rim hole. No matter how gently I remove the head, that little nub is going to grow a hole eventually.
He said the pump head would come off the valve more smoothly if it had a little valve to bleed the air trapped inside it. He also said I should use threadless valves, as they're less likely to stick in the pump head while it's being removed from the valve.
I've ordered a pump head with an escape valve. I hope this helps my problem. I've been dealing with this thing since I got my bike, last November. Several times, I thought I'd solved the problem. But the valves kept failing right on schedule, every month.
Has anybody had this problem and solved it?
I showed my latest torn valve to a wrench I respect. He said that when I remove the pump head from the valve, after inflating the tire, the head yanks the valve--and it's rubber nub--into the rim hole. No matter how gently I remove the head, that little nub is going to grow a hole eventually.
He said the pump head would come off the valve more smoothly if it had a little valve to bleed the air trapped inside it. He also said I should use threadless valves, as they're less likely to stick in the pump head while it's being removed from the valve.
I've ordered a pump head with an escape valve. I hope this helps my problem. I've been dealing with this thing since I got my bike, last November. Several times, I thought I'd solved the problem. But the valves kept failing right on schedule, every month.
Has anybody had this problem and solved it?