Gig 601XL Builder wrote:
"Ray Andraka" wrote in message
...

Gig 601XL Builder wrote:



Fill them with Nitrogen they won't leak as much. Not that I've tried it.

How do you figure that? Air is already mostly nitrogen. Why would a
higher concentration of nitrogen leak any less than plain old air? The
difference in atom sizes between nitrogen and the other major constituents
of air is on the order of a few percent, so even the other constituents
aren't going to leak out leaving just nitrogen.


As I said I haven't tried it but there are 398,000 hits when you Google
Nitrogen filled tires. I saw and ad for it in one of the aircraft mags the
other day and hadn't really looked into it that much. But glancing at the
Google results the opinions are mixed between works well and snake oil.



There are reasons for using nitrogen in tires, but leakage isn't one of
them. From what I understand, high pressure tires often need nitrogen
because if regular air was used the high pressure of the oxygen mix
becomes combustible and can lead to tire fires. In our spam cans
though, the pressures aren't high enough to cause problems. There's
also the convenience thing if you happen to have bottled nitrogen in the
hangar, and finally some have said that it keeps the rubber from
oxidizing, but I doubt that is a real issue since the outsides will
deteriorate long before the inside oxidizes enough to be a problem.