Correction, 78%, not 79.8%.

---- Dave Mcneely <mcneely4@COX.NET> wrote:
> Well, the atmosphere is not 87% nitrogen, it is 79.8% nitrogen.  But that's ok, the principle is the same.  At any rate, one is simply adding nitrogen to air, and over time, will add more air, unless he goes back to the dealer to get another $10 shot of nitrogen.  BTW, the same amount of nitrogen costs the dealer a few pennies.
>
> ---- Rocket J Squirrel <camping.elliott@GMAIL.COM> wrote:
> > "Not sure how he would evacuate the normal atmospheric air form the
> > process [...]"
> >
> > Good question . . . aren't they just pushing nitrogen into a tire that
> > is already at 87% N at atmospheric pressure?
> >
> > Quick, someone do the math: after inflating a tire to, say, 40 psi by
> > adding nitrogen atop regular air at atmospheric pressure, what's our % N?
> >
> > --
> > Jack "Rocket j Squirrel" Elliott
> > 1984 Westfalia, auto trans,
> > Bend, Ore.
> >
> > On 10/17/2015 02:57 PM, Max Wellhouse wrote:
> > > Eric:  I have a friend here in Cedar Falls Iowa that fills his tires
> > > exclusively with nitrogen.  He runs a really small tire mounting and
> > > balancing shop out of his garage and does mobile repairs as well.  He
> > > says that in order to mount tires and fill them with nitrogen, you
> > > have to make sure the bead sealing surface is absolutely pristine, so
> > > there's no chance of micro leaks from pitted sealing surfaces.  I
> > > think he charged like $10/tire to do the fill.  Not sure how he would
> > > evacuate the normal atmospheric air form the process, but I have used
> > > his services on my Vanco II Continentals mounted on Mercedes CLK
> > > forged aluminum rims(mounted on my 90 GL  BTW)  and they haven't lost
> > > 1 psi in like 4 years.  I think Tire Rack offers the service as well.
> > > NASCAR Racers use nitrogen     YMMV
>
> --
> David McNeely

--
David McNeely