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it can't be the weight... lets say u have 35psi of regular air in ur tires... its 35 pounds per square inch, to have 35 psi of nitrogen you still
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#1 (permalink) |
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Track Member
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it can't be the weight... lets say u have 35psi of regular air in ur tires... its 35 pounds per square inch, to have 35 psi of nitrogen you still have 35 pounds per square inch... so its not weight
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#3 (permalink) | |
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A True Z Fanatic
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Vs dry air, nitrogen is going to respond to heat at about the same rate as air. As temperature increases, the gas will try to reduce it's density, which when inside a fixed size volume (for arguments sake) will increase its pressure. The water vapor may respond at a different rate, so that may be the only significant difference. Perhaps there is benefit to aging, but most tires I've seen crack up on the outside first due to the sun cooking the oils out of them. |
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#4 (permalink) |
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A True Z Fanatic
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There are certainly a lot of completely wrong answers in this thread thus far.
Nitrogen is an inert gas and as others have said, 'air' is 78% nitrogen. Removing the oxygen and insignificant other gases from the tire inflation composition won't do much other than minimize oxidation to the surfaces within the tire. As Chris has noted, the weight difference between air and nitrogen alone will be negligible in our tires. Molecular size is also not a factor for tire inflation...tires are not selectively permeable membranes that would leave you with pure nitrogen as the oxygen diffuses out more quickly (very funny idea though). Nitrogen's molecular size is nearly identical to that of oxygen anyway. The ironic part of all this is that people actually pay more money (or any money, if you will) for a nitrogen fill. In SCUBA diving, we pay a small amount more to minimize the composition's % of nitrogen by adding more oxygen to the fill. This blend is called Nitrox and usually it's only a couple dollars more expensive...and this is a filtered, clean blend that we are actually breathing. Paying more for an abundant gas that gives no benefit and doesn't need to meet any cleanliness guidelines is really not necessary. Last edited by spearfish25; 05-15-2009 at 10:01 AM. |
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#5 (permalink) | |
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#6 (permalink) | |
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All you need is dry air. |
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#7 (permalink) | |
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