Is anyone using Nitrogen in their tires?

[Brett Dikeman]

On Jun 12, 2008, at 10:18 AM, Bares, Vittorio wrote:

> I've also seen, trackside teams that have N2 bottles use them to run  
> air
> tools such as grinders and impact guns...


The smart ones would be using CO2, which provides a lot more gas  
storage since it can be stored easily a liquid.

A while back I posted the results of analysis a friend did with  
MATLAB.  The difference in pressure (in two tires each raised more  
than 200 degrees) between air and pure nitrogen is on the order of ten- 
thousandths of a percent volume change, and not just because air is  
largely nitrogen anyway.

A compressor with a dryer should be plenty good enough for even the  
autox and weekend track people.  If you're going to the track and want  
to run tools for a bit and do dry fills, rent a scuba tank (buy a high- 
pressure regulator used, and plug all the ports except one of the  
LP's, and put on a quick-disconnect chuck on the end of the LP hose.)  
Or, go the liquid CO2 route via your friendly local beverage dealer-  
that'll provide a lot more volume.

Brett