Why nitrogen?

"Bertie the Bunyip" wrote in message
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"Bob F." wrote in
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"Bertie the Bunyip" wrote in message
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"Viperdoc" wrote in
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The thread on brakes raised a question from the past- why nitrogen
in the tires of big jets and heavies? Air is around 78% nitrogen
anyway, and the coefficient of expansion of the remaining 20% that's
oxygen can't make that much difference in volume.

Why not just use dry air? I couldn't imagine that dry air or dry
nitrogen could make that much difference in corrosion, either.

I seem to recall someone giving me the rationale for this a long
time ago, but also seem to remember thinking it didn't make that
much sense at the time.




Well, the greasemonkies say it preserves the rubber. Having said that
we go
through them pretty quick and even considering retreads there
wouldn't be years of exposure or anything..
Wheel fires may be another good reason...


bertie


Right, they are called Napoleon tires. You heard of "Napoleon Blown
Apart" haven't you. :-)


groan!


A guy i used to work with witnessed the aftermath of someone trying to
fill a 707 nosewheel wiht an incorrect type reduction on the bottle. The
guy was pretty much vaporised. My friend spent months as a witness in
the subsequent lawsuit.

Bertie

You're a cross posting dumb ass.