Robin'n'Marian
Edmonton, Alberta, Canada
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The reason you use Nitrogen in your tires is so that you won't have the tire pressure fluctuation caused by hot and cold temps that you do with air, per my DH. He does know what he is talking about, so there is a purpose to Nitrogen after all!
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hmknightnc
Wilmington, NC
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Hmmm.....
Pure Nitrogen being an ideal gas would follow the ideal gas law. PV=nRT where P is pressure and T is temperature. It T goes up then P goes up and vice versa. Sorry Robin the laws of physics trumps your answer
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K3WE
Missouri
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frankdamp wrote:As I've said befors, you only need nitrogen in your tires if your RV can do 150 mph for two miles with a dragging brake. (Boeing research - direct experience).
OK, finally a little something that makes sense. Carbon (lots of it in rubber) + Nitrogen does burn.....Carbon + Oxygen does.
I think I am going to contaminate my "pure nitrogen" with some
~80% nitrogen ~20% O2 (+ a host of other gasses in small concentrations)
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Too Young to Retire
Sun Diego
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Joined: 08/22/2011
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K3WE wrote:frankdamp wrote:As I've said befors, you only need nitrogen in your tires if your RV can do 150 mph for two miles with a dragging brake. (Boeing research - direct experience).
I think I am going to contaminate my "pure nitrogen" with some
~80% nitrogen ~20% O2 (+ a host of other gasses in small concentrations)
That's what I did! Now I'm concerned about tire failure when I get my rig up to 150 mph and start dragging the brake. Oh what to do.
Chevy 3500HD Crewcab, SB, Diesel pulling a 36' Cameo
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gkas
Southern California
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Nitrogen Fill In Tires = One Born Every Minute
My photos: http://mikekazphotography.com/Gerry/GalleryIndex/index.html
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W4MBG
Williamsburg, VA
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actually:
1999 Winnebago Minnie, 29', Triton V10, mostly stock. So far...
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pete42
Ohio
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I hold a commercial pilot's license and worked on airplanes during my younger years doing repairs.
we always used nitrogen in plane tires because compressed air has water in it which can and does freeze at the altitudes we flew.
when landing the frozen water can cause a tire to be unbalanced very bad when running down a runway at 150 knots.
my private plane which isn't flown much over 5 or 6 thousand feet and I land on grass runways unbalanced tires are not as bad as when landing on concret.
so if you want to keep the water out of your tires use nitrogen otherwise use compressed air.
pete
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Chemgoddess1
Suburbs of Cleveland, Ohio
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hmknightnc wrote:Hmmm.....
Pure Nitrogen being an ideal gas would follow the ideal gas law. PV=nRT where P is pressure and T is temperature. It T goes up then P goes up and vice versa. Sorry Robin the laws of physics trumps your answer
However air is NOT an ideal gas. Pete42 nailed it on the head. Unless you are using air that is dried then you have moisture in your mix.
2007 Fleetwood Utah PUP
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live well, laugh often, love much
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mgirardo
Brunswick, GA
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I'm not sure I'd use it in a Motorhome, but the last time we had tires put on our Astro minivan, the tire shop put nitrogen in without telling us they were going to do that. I never once had to put air in any of those 4 tires. My Xterra that does not use Nitrogen, I put a couple pounds of air in every month or so.
Since my wife drove the minivan, I was glad to have the nitrogen, since she wouldn't bother to check the air pressure in them.
hmknightnc wrote:Hmmm.....
Pure Nitrogen being an ideal gas would follow the ideal gas law. PV=nRT where P is pressure and T is temperature. It T goes up then P goes up and vice versa. Sorry Robin the laws of physics trumps your answer
You can't argue with Physics, however, air is not always an ideal gas. One of the reasons Nitrogen is better in tires is because it is a dry gas. There is water in compressed air and when there are temperature changes, the water can expand and contract causing the pressure in the tire to increase or decrease. Hence the reason Race car drivers run Nitrogen.
According to Popular Mechanics, there are several reasons Nitrogen is better than air.
-Michael
Michael Girardo :: michael@ecxc.com
2009 Jayco Greyhawk 31FS Class C Motorhome
2006 Rockwood Roo 233 Hybrid Travel Trailer
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tatest
Oklahoma Green Country
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Can't be down, they tell us the nitrogen molecules are too big to leak out, only oxygen can escape. Maybe they filled that one with air instead, and only the nitrogen is left?
Tom Test
Itasca Spirit 29B
2001 Ranger Edge
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