Using Nitrogen? Please step inside...
Le Mans Master
Joined: Oct 2004
Posts: 5,323
Likes: 358
From: California
All of this nitrogen effort is a moot point if your tire mounter is wetting down the bead of the tire when he mounts it.
The water getting into the tire compromises your effort to control tire pressure increases as they heat up. So unless they use a dry mounting technique, N2 is just something that sounds cool.
The water getting into the tire compromises your effort to control tire pressure increases as they heat up. So unless they use a dry mounting technique, N2 is just something that sounds cool.
Last edited by Olitho; Nov 9, 2007 at 01:53 AM.
Race Director
Joined: Sep 1999
Posts: 12,439
Likes: 920
From: CONCORD NC
it's not the air that's the problem, it's the moisture that's in it, as well as the "lubricant" they use to mount tires. Purging and refilling several times with Nitrogen or other "dry" air will cause you to build less pressure when they get it. They'll still build a lot, but not quite as much. Hot pressures are what's important, and you need to experiment to find what cold temp gets you there.
Drifting
Joined: Nov 2000
Posts: 1,563
Likes: 31
From: scio or
All of this nitrogen effort is a moot point if your tire mounter is wetting down the bead of the tire when he mounts it.
The water getting into the tire compromises your effort to control tire pressure increases as they heat up. So unless they use a dry mounting technique, N2 is just something that sounds cool.
The water getting into the tire compromises your effort to control tire pressure increases as they heat up. So unless they use a dry mounting technique, N2 is just something that sounds cool.
It also occurs to me that if you were to do the empty/fill cycle 3-4 times you'd get all the vapor out, but any condensed water would still be in there. And as soon as the tire gets hot it'll vaporize and cause problems. Maybe it would work to empty the tire when its hot? I dunno.
Thats why the vacuum - so you can be sure the water comes out. And even at that, the colder it is outside the more vacuum you have to draw.
Drifting
Joined: Dec 2005
Posts: 1,954
Likes: 147
From: Bend, Oregon Black / Ebony 2LZ 2006 Z06 C6Z06 owner since 2/7/2006
Nah, it works fine even if they use water. The trick is you have to put a vacuum on the tire to vaporize the water and remove it. Same deal as working on an A/C system.
It also occurs to me that if you were to do the empty/fill cycle 3-4 times you'd get all the vapor out, but any condensed water would still be in there. And as soon as the tire gets hot it'll vaporize and cause problems. Maybe it would work to empty the tire when its hot? I dunno.
Thats why the vacuum - so you can be sure the water comes out. And even at that, the colder it is outside the more vacuum you have to draw.
It also occurs to me that if you were to do the empty/fill cycle 3-4 times you'd get all the vapor out, but any condensed water would still be in there. And as soon as the tire gets hot it'll vaporize and cause problems. Maybe it would work to empty the tire when its hot? I dunno.
Thats why the vacuum - so you can be sure the water comes out. And even at that, the colder it is outside the more vacuum you have to draw.
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