Hey all of you nitrogen purgers out there!

I found an interesting article that suggests that oxygen's permeability across the tire wall and its inevitable oxidative capacity diminishes the tire's capacity to hold onto the air that it has, ie, as it heats up - some actually escapes - not just a gas law issue (VP = nRT). Sounds interesting. We can now think of tires as jailors of large molecules... sorry, its time for my medication again.

Here is the URL...

http://www.bcbr.com/jul1400/nitronics2.ht



And here is a snippet of the piece:

""Sperberg reports that tires filled with pure nitrogen travel 26 percent farther than the same tires filled with air. According to Verini, this 26 percent increase in tire life occurs because oxygen slowly permeates the rubber of the tire, leaving the nitrogen behind. "As the oxygen leaks out the tire pressure goes down and the tire temperature goes up, which increases oxidation, rolling resistance and tire breakdown. And you usually can't tell with radial tires by looking at them because radials look a little flat when they are fully inflated anyway." Obviously, increasing a tire's life by 26 percent is good idea. And the increased gas mileage from running on properly inflated tires is also a plus. This increase, however, becomes even more cost effective when multiplied by thousands of tires, such as at a tire store, a rent-a-car fleet or a fleet of commercial trucks.""


Cheers,
Eric

(sometimes I feel inert as well)

posted by 136.167.54...

• decision made on dunlops winter sport, aero rules, Wed, 4 Dec 2002 03:57:45
  • Re: decision made on dunlops winter sport, Boomer, Thu, 5 Dec 2002 16:50:48
  • nitrogen in tires explained, Sam Stoney, Wed, 4 Dec 2002 19:51:50
    • boiling water, Aero'ed, Thu, 5 Dec 2002 12:32:36
      • Re: boiling water, Sam Stoney, Thu, 5 Dec 2002 15:00:00
        • phase change, liquid to gas, Aero'ed, Thu, 5 Dec 2002 19:28:39
          • Re: phase change, liquid to gas, Dustin, Sat, 22 Sep 2007 11:46:57
          • Re: phase change, liquid to gas, Sam Stoney, Thu, 5 Dec 2002 21:11:21
  • Nitrogen reduces noise?, Aero'ed, Wed, 4 Dec 2002 07:21:18
    • Re: Nitrogen reduces noise?, Simon Watkins, Wed, 4 Dec 2002 07:41:38
      • They have nitrogen filling stations in Switzerland?, Greg Netzner, Wed, 4 Dec 2002 11:30:23
      • We used Nitrogen for tyre inflation..., b.flippo, Wed, 4 Dec 2002 11:29:46
        • Re: We used Nitrogen for tyre inflation..., neal, Fri, 6 Aug 2004 14:55:28
        • Nitrogen doesn't obey Ideal Gas Law, hmmmm, Aero'ed, Wed, 4 Dec 2002 12:49:14
          • Re: Nitrogen doesn't obey Ideal Gas Law, hmmmm, Simon Watkins, Wed, 4 Dec 2002 14:03:10
            • Not a chemist, and can't explain why, but..., b.flippo, Wed, 4 Dec 2002 16:27:35
              • Anyone tried Xenon in the tires?, bRAD, Wed, 4 Dec 2002 17:02:18
                • Nitrogen and permeability/oxidative capacity, Dr. Eric Strauss, Wed, 4 Dec 2002 17:51:00 <-- Viewing This Message
                  • Re: Nitrogen and permeability/oxidative capacity, Simon Watkins, Thu, 5 Dec 2002 02:06:32

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