That’s not a bad shout - will maybe dig the parts out and retry as in theory copper grease would make it worse (conductivity creates a path to improve galvanic action), but other greases might work!
Also not a good idea to add extra mass at the end of the valve. Although it does not look like much, the additional centrifugal force when the wheel is rotating at many RPM can cause the valve to fail.
That's a very good point indeed - I will weigh the two caps next time I am at the workshop and see what the difference is, then we can calculate the different in force applied to the valve stem for a given speed...! I see a follow up video!
it can be a bit hit and miss, it probably depends a lot on the time of year too - if you fit it in winter when the air is damp you are more likely to trap moisture inside. If you live in a very dry climate in the US for example, it may be much less of an issue.
Fucking brilliant, tell it like it is! Amazing it's that bad after just ten weeks. I have only ever had one direct run in with one of these having acquired a singular disaster zone on one wheel of a car I bought. Predictably it was weldes together, and cost me half an hour of my life and a much as a set of valve caps is new, to get the local used tyre place to pop the tyre half off, swap the valve, and give me the lecture about Ali valve caps being toss .
I believe the more expensive ones have a plastic insert, or are plated brass. Else if you really wanted, if guess atleast add a health smear of copper grease or waterproof lithium grease or the like. It would help if they screwed all the way down and bottomed out on the rubber of the valve stem, but most seem to have a seal at the bottom (why?) and or not enough thread depth. Classic case of not understanding how carefully designed these simple things in life are and hence how easy it to cock that up!
What if you add some grease to the thread. Would it prevent anything? You could add that to the test.
That’s not a bad shout - will maybe dig the parts out and retry as in theory copper grease would make it worse (conductivity creates a path to improve galvanic action), but other greases might work!
Vaseline works wonders so iv been told
Also not a good idea to add extra mass at the end of the valve. Although it does not look like much, the additional centrifugal force when the wheel is rotating at many RPM can cause the valve to fail.
That's a very good point indeed - I will weigh the two caps next time I am at the workshop and see what the difference is, then we can calculate the different in force applied to the valve stem for a given speed...! I see a follow up video!
You will also note that the mass is further away from the rim, as the new caps not only have more weight, but more “height”
Interesting. I never had this problem with mine in the past, but I guess I never wet the valve underneath the valve cap...
it can be a bit hit and miss, it probably depends a lot on the time of year too - if you fit it in winter when the air is damp you are more likely to trap moisture inside. If you live in a very dry climate in the US for example, it may be much less of an issue.
Fucking brilliant, tell it like it is! Amazing it's that bad after just ten weeks.
I have only ever had one direct run in with one of these having acquired a singular disaster zone on one wheel of a car I bought. Predictably it was weldes together, and cost me half an hour of my life and a much as a set of valve caps is new, to get the local used tyre place to pop the tyre half off, swap the valve, and give me the lecture about Ali valve caps being toss .
I believe the more expensive ones have a plastic insert, or are plated brass. Else if you really wanted, if guess atleast add a health smear of copper grease or waterproof lithium grease or the like. It would help if they screwed all the way down and bottomed out on the rubber of the valve stem, but most seem to have a seal at the bottom (why?) and or not enough thread depth. Classic case of not understanding how carefully designed these simple things in life are and hence how easy it to cock that up!