"Nitrogen is the most abundant gas in the atmosphere. Air is composed of 78 percent nitrogen. Oxygen accounts for 21 percent, and the inert noble gas argon makes up 0.9 percent of the air."
Illegitimi non carborundum
Posts: 2445 | Location: OKC, OK | Registered: February 15, 2008
Use to run nitrogen on funny car tires. I does change with temp but not as drastic as compressed air. Our reason was to get more stable pressure from pre burnout to stage. Now will say hard to tell how well it worked. It did seem to make prediction of car's first half numbers more accurate. May have just been I got better at knowing car. Yea I see replies from that now. Will say did not hurt anything in 60 or 330.
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I have a large tank for pressure testing so I have it on hand, so I tried it one time. Seemed like too much of a hassle. Maybe there is something to it for high end really fast stuff, but for bracket racing I will stick to air.
Posts: 1640 | Location: PA | Registered: February 26, 2000
Always wondered how much tire pressure changed after a burnout. So my boy and I did experiment. We checked the pressure before and right after burnout for weekend. Consistent 1/2psi in 32x16x15 M/T set at 8.5psi.
Bigger change comes from rims being HOT after slowdown. Then car sitting for little while. Important to watch if hot lapping. They will get way low if the wheels themselves get cool and you set them with the wheels hot.
Not sure of Nitrogen would make much difference in the whole scheme of things.
Posts: 1553 | Location: St Marys | Registered: January 12, 2004
We have 2 cars and 2 trailers I have a bottle in each trailer its a knee high bottle and is way easier than having am air tank 2000 PSI to start and it will last about 2-3 months depends on how much we race, and seems to be more stable.
Originally posted by ski_dwn_it: Always wondered how much tire pressure changed after a burnout. So my boy and I did experiment. We checked the pressure before and right after burnout for weekend. Consistent 1/2psi in 32x16x15 M/T set at 8.5psi.
Bigger change comes from rims being HOT after slowdown. Then car sitting for little while. Important to watch if hot lapping. They will get way low if the wheels themselves get cool and you set them with the wheels hot.
Not sure of Nitrogen would make much difference in the whole scheme of things.
All I remember was it still changed. And for all you gain I said the heck with it and went back to air. The key with air is to not have much moisture in it. I always questioned filling air tanks at the track. Probably no separator and I bet the tank hardly ever gets drained. I make sure I use from my tank and fill it at home with my system that has separators.
Posts: 1640 | Location: PA | Registered: February 26, 2000
