REFLECTOR: nitrogen in tires...

[nmflyer1 at aol.com]

Honestly Al, I was wondering what took you so long :) 

Good to hear your input. 

I believe, however, that what was put in to this thread does not equal a decent level of output. 

Bummer when your put-out is not equaled or exceeded by your output. 

Kurt 


-----Original Message-----
From: Al Gietzen <ALVentures at cox.net>
To: steve at hord.com; 'Velocity Aircraft Owners and Builders list' <reflector at tvbf.org>
Sent: Wed, 29 Apr 2009 11:32 pm
Subject: Re: REFLECTOR: nitrogen in tires...




 [1] Nitrogen is denser than Oxygen: This means the larger molecules

escape less easily from tires resulting in a more gradual loss of

pressure over time. According to the Michelin Tire Manual, a tire that

is inflated with Nitrogen loses its pressure 3 times slower than if it

were inflated with air.

 

Clearly this discussion has already gone beyond its merits for our purposes; but for scientific interest we should at least know that oxygen, atomic number 8, is a larger atom than nitrogen, atomic number 7; and the density of oxygen, O2, is 14% greater than nitrogen, N2; when at the same pressure.  Beyond that, the size of the atom – or molecule when two atoms are joined, is irrelevant to the leak rate or loss of pressure in the tire.

 

I could go on . . . but, no; I’ll spare youJ

 

 Al




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