[R-390] COSMOS - Sources for Nitrogen

[2002tii]

Russ wrote:

>I located this site that gives locations that will supply nitrogen 
>for inflating tires (tyres).
>
>http://www.getnitrogen.org/index.php
>
>I'm not going to get into the issues related to nitrogen vs. air in 
>tires but it will be
>interesting to see if the handling improves on my R-390A after inflation.

Most welding supply stores sell nitrogen bottles.

Back in my roadracing days, we used nitrogen bottles with regulators 
to fill our tires, but not for any handling advantage or change in 
the tempco of pressure (air is 78% nitrogen -- the pressure tempcos 
of air and nitrogen are so similar the difference is 
negligible).  Rather, it was (1) to have a reliable source of gas at 
a regulated pressure where you might not have electricity to run a 
compressor, and (2) to make sure there was no moisture or oil in the gas.

For a while, I used helium in an effort to reduce unsprung 
weight.  However, it leaked out fast enough to be a problem, no 
matter how well we sealed the wheels and beads.  (Plus, it didn't 
reduce the unsprung weight to speeak of.)

Best regards,

Don