Re: [Chrysler300] should anyone want to see how a stock 300F wheel loo ks afte...

[Edward Mills Antique Tractors <millserat@xxxxxxxxxxxxx>]

Not sure where this thread came from as I can't find any thing preceding 
it - link to pictures of a 300F wheel after what???

As to Nitrogen vs air - the big difference has nothing to do with inert 
or corrosion, but rather the absence of water. Compressed air has water 
vapor trapped by the compressor. If you drain air every day or maybe 
every week depending on humidity where you live, you won't have any real 
problem. But in cases where stations do not drain moisture from bottom 
of tank, you get significant water in tires which expands at higher 
rate. Because % water is a variable, pressure pick up is a variable and 
in a race car situation, where pressure at operating temperature is 
critical as it relates to footprint / tread contact in cornering and 
hence cornering speed capability, racers typically prefer Nitrogen. Yes 
it increases in pressure with temperature, but at a consistent rate, so 
race set(s) of tires will be similar to those you tested on to develop 
starting cold pressure and checked pyro on to set alignment etc.

Been there, done that.

At to using pure Oxygen, you might have similar control of pressure, but 
it has its own problems which might include oxidation (corrosion) but 
that is not a concern in a race situation where tires are changed 
multiple times in a weekend - but then you would not want to be smoking 
or have an ignition source near a combustible material in pure oxygen 
(Ref Apollo1).

As to street application, most people are fine with regular Air - N2 is 
fine too, but not necessary so long as compressor does not accumulate 
significant moisture.

best, Ed

mgoodknight@xxxxxxxx wrote:
>  
>
> ALL GASES expand and contract with temperature changes. If you believe 
> differently you're dreaming. The benefit of using nitrogen (if there's 
> a benefit) is that it is inert, ie does not support corrosion. Common 
> air is 79% Nitrogen anyway. Keep your tires dry inside and you won't 
> have rust even with 20+ percent Oxygen. No rust, no leaks!
> -------------mgoodknight
> __________________________________________________________
> Handyman Franchises. Click Here.
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>
> [Non-text portions of this message have been removed]
>
> 




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