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Date:         Wed, 23 Apr 2003 19:48:44 -0400
Reply-To:     David Brodbeck <gull@GULL.US>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Brodbeck <gull@GULL.US>
Subject:      Re: Tyres and nitrogen
Comments: To: Jim <jrasite@EONI.COM>
In-Reply-To:  <3EA722C5.7090703@eoni.com>
Content-Type: text/plain; charset=us-ascii; format=flowed

Jim wrote: > I'd be skeptical... If I remember Boyle's Law, inert or no, gas > pressure will increase with temperature. > > <http://www.grc.nasa.gov/WWW/K-12/airplane/aboyle.html> > > Jim

Yeah...there are only two benefits I can see to filling tires with nitrogen:

- It may bleed out less quickly through the sidewalls. - It will prevent any fires from starting inside your tires. ;)

Rumor has it that during development of the U-2 spy plane, they tried filling the tires with helium to reduce weight. (Every pound saved meant a notable increase in the aircraft's maximum altitude.) They found it wasn't practical because it leaked out through the sidewalls too fast.


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