Nitrogen, much larger atoms, inversely, helium has much smaller atoms, thus
helium's tendacy to leak much more easily. That is why helium leaks out of
rubber balloons so quickly and they now sell those Mylar balloons...or is it
the molecules in the rubber balloon, vs. the molecules in the Mylar
balloon...hmmm...verrrrry intereskint....
Your friend in nuclear science,
Dr. Rascal
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of andy levy
Sent: Thursday, July 29, 2004 3:07 PM
To: dakota-truck-moderator@bent.twistedbits.net
Subject: Re: DML: Guess, mpg
Dave Downing wrote:
> "Ed Buxton" <flamin_red_dakota@yahoo.com> wrote in message
> news:20040729180850.63741.qmail@web20626.mail.yahoo.com...
>
>>I was at Costco the other day...they had a sign up
>>about putting nitrogen instead of air into your tires.
>>I don't know if it was free or an "add on". Anyone
>>know the merits, if any, of nitrogen over regular old
>>generic air?
>
>
> My brother is a Tire Center Manager for Costco and he was telling me about
> this the other day. I thought it sounded weird at first, but it makes
sense
> now that he explained it. Due to the physical properties of Nitrogen, it
> won't bleed out through the tire, thus keeping your tire pressure more
> constant, less refilling. It also won't fluctuate as much in the hot/cold
> like regular air does. Don't know if it's free or not, but I could check.
Didn't some airplane use nitrogen in its tires for these reasons? I
want to say Concorde or SR-71.
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