Fatal Swan
Senior Retro Guru
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I bought a set of Mavic Cosmic carbon wheels on ebay recently, and as a fully paid-up weight weenie, to offset some of the extra weight I fitted a pair of 40g Tubolito inner tubes. All is very good with wheels and tubes, only the Tubolito valve stems have no thread to secure them onto the rim with a little locknut. As a result they rattle like mad against the carbon faring - like in the picture here, only my valves don't have the thread:
Google throws up a few solutions this - blue-tack, electrical tape over the stem and rim together, 'thickening' the valve stem with some tape around it. They would all probably do the trick but are either ugly or not easy to with the tube already fitted.
A solution which I haven't seen posted anywhere already is to find some rubber O-rings of just the right size. I took the best measurements I could and came up with these at £2.50 posted for a pack of 10:
The 5mm O-rings with a 1mm thickness are a perfect fit - snug when rolled over the valve and they can be pushed to fit sungly into the gap between the stem and rim, keeping the valve stem perfectly in place and with no rattle!
Basically this is a post to remind myself of this fix when 10 years later I have the same problem, have forgotten all about it and google the solution again. And to remind myself I should have 8 of them spare in the garage already!
Google throws up a few solutions this - blue-tack, electrical tape over the stem and rim together, 'thickening' the valve stem with some tape around it. They would all probably do the trick but are either ugly or not easy to with the tube already fitted.
A solution which I haven't seen posted anywhere already is to find some rubber O-rings of just the right size. I took the best measurements I could and came up with these at £2.50 posted for a pack of 10:
The 5mm O-rings with a 1mm thickness are a perfect fit - snug when rolled over the valve and they can be pushed to fit sungly into the gap between the stem and rim, keeping the valve stem perfectly in place and with no rattle!
Basically this is a post to remind myself of this fix when 10 years later I have the same problem, have forgotten all about it and google the solution again. And to remind myself I should have 8 of them spare in the garage already!
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