Visit The Dirt Forum for More Information

Author Topic:   Compressed Nitrogen instead of air.
jammin
Dirt Administrator

Total posts: 5060
posted October 08, 2001 08:34 AM UIN: 16262997
Anyone run this in your tires? I heard that it doesn't expand as much as air when the tires heat up. Any comments?

jammin

LAYNE_Trans
Dirt Full Roller

Total posts: 61
posted October 08, 2001 02:04 PM
Actually the nitogen remains at a constant pressure unlike air. The main reason for this is that the moisture in air allows the pressures to change as the tires heat up.

To do it right, you have to evacuate the tire once mounted of all air, then fill it with compressed air. It is a lot of hassle for the weekly racer, and can be a significant expense by the time you get all the equipment to do it right.

rjs
Dirt Full Roller

Total posts: 72
posted October 08, 2001 03:48 PM
You will get similar results from using Tanner racing's air Dryer. It pulls moisture out of the air,in this case out of the air in your tires. For weekly racing use the least amount of soapy water to mt your tires, the water stays in the tire and expands when cycled. A good tip is to drain your air compressor regularly and use a water seperator just like if you were going to paint a car. One last thing, don't leave tires out side to get rained on, if they are lying flat and are out of air, water will seep into them and the problem gets worse.

Chad
Dirt Forum Racer

Total posts: 82
posted October 08, 2001 07:35 PM
I agree with the dryer. We use this in-line dryer on our Nascar asphalt car. We also use Argon. This is what all the guys back east are using instead of nitrogen. I'm not sure of the exact properties; but they are superior to nitrogen. Winston Cup teams have been using Argon for quite awhile.

rjjracing
Dirt Roller

Total posts: 11
posted October 10, 2001 09:35 AM
quote:
Originally posted by jammin:
Anyone run this in your tires? I heard that it doesn't expand as much as air when the tires heat up. Any comments?

jammin


I have run nitrogen in the tires for a couple of years. we have had a lot of luck with equal air pressure and tire wear no matter the track conditions. I recommend nitrogen.

Racer77
Dirt Full Roller

Total posts: 32
posted October 10, 2001 12:10 PM
I have used the Nitrogen in my tires for several years. a small bottle refill (an old co2 bottle for coke mach)costs $8.00 and it lasts about 4 to 6 weekend. I only take all of the air out after I first mount the tire (Tire repair places sell a tube air remover that pulls a vaccume it costs about $5.00)

The tires only expand about 1.5 lb.s compared to 4 lb.s that I get when I Forgot to get a refill.

I do notice that the car will not change as much after the Yellows, when the tires cool down.

jammin
Dirt Administrator

Total posts: 5060
posted October 10, 2001 12:50 PM UIN: 16262997
You could really use that temperature raise to your advantage toward the end of a feature....You could use air in the tires you want to raise and nitrogen in the tires you dont.

jammin

Back to the Archives