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Thread: Nitrogen instead of air in your tyres.

  1. #21
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    Quote Originally Posted by Scaredycrow View Post
    Put helium in there to reduce unsprung weight

    At least you will know when you have a tyre leak............

  2. #22
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    save even more weight, put hydrogen in them, just dont get the tyres warm
    fill it with H+ molecules, reduce the weight of the air in the tyres to 1/28th of current weight
    Last edited by SarcasticOne; 15-12-2010 at 09:34 AM.

  3. #23
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    It's all about Radon you fools. Nitrogen was so 2009

  4. #24
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    Quote Originally Posted by 240MPS View Post
    At least you will know when you have a tyre leak............
    The tyre's voice gets really high pitched?


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  5. #25
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    Thanks for your input guys. For $6 a tyre I'll stick to the nitrogen and I'll still have money left over for coffee and cake!

  6. #26
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    Quote Originally Posted by Caffeine Fiend View Post
    The tyre's voice gets really high pitched?


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    The tyres will squeal more

  7. #27
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    The only advantages I can see are that nitrogen is "dry" there is less scope for condensation of any kind in the tyre, condensation which could (for example) reduce seal effectiveness, cause larger flutuations in tyre pressure over warm/cold cycles (condensates, dissolves gasses on cool down, releases gasses and then evaporates during warm up. Would be more apparent in coastal and humid regions.

    Pressure doesn't really matter what sort of gas it's using. While I'd be interested to see helium just to see if one can feel a difference, I expect the differences would lie in resonant frequencies, compression characteristics of gas.

    Hydrogen for instance, contrary to norm is endothermic on compression. The more you compress hydrogen, the colder it gets instead of warming up. I expect there would be differences using exotic gasses.

    Not Reccommended :
    Radon ( /ˈreɪdɒn/ RAY-don) is a chemical element with symbol Rn and atomic number 86. It is a radioactive, colorless, odorless, tasteless noble gas, occurring naturally as the decay product of uranium. It is one of the densest substances that remains a gas under normal conditions and is considered to be a health hazard due to its radioactivity. Its most stable isotope, 222Rn, has a half-life of 3.8 days. Due to its intense radioactivity, it has been less well-studied by chemists, but a few compounds are known.
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  8. #28

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    For balance, you might like to look at the stated advantages of N in your tyres on Nitrogen in Tires : Information about Nitrogen Tire Inflation News, Benefits, Generator Dealers, Location Finder & More

    The physical and chemical properties I refer to in my previous post remain valid and are indisputable properties ("you can't argue with science") , and my contention stands that for the average Joe who routinely checks his tyres, the benefits are minimal to zero. The costs associated with weekly or even monthly N top-ups would far outweigh the supposed savings from reduced tyre wear that might be attributable to "a lesser tendency to pressure reduction" via "rubber seepage", most of which is in any event is more likely the result of poor fitting rims and valve fittings. And if you are checking as frequently as weekly, which most people don't, then you can much better afford to use air for free, especially if you check tyres when they are at the same ("cold") temperature, with little or no risk of pressure loss between checks.

    See also "Overblown benefits" on: Nitrogen's tire benefits seem overblown - MSN Money
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  9. #29
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    Quote Originally Posted by Nexus View Post
    Not Reccommended :
    Radon ( /ˈreɪdɒn/ RAY-don) is a chemical element with symbol Rn and atomic number 86. It is a radioactive, colorless, odorless, tasteless noble gas, occurring naturally as the decay product of uranium. It is one of the densest substances that remains a gas under normal conditions and is considered to be a health hazard due to its radioactivity. Its most stable isotope, 222Rn, has a half-life of 3.8 days. Due to its intense radioactivity, it has been less well-studied by chemists, but a few compounds are known.
    Hahaha Shh... I was waiting for someone to comment. They're willing to pay for it, and I get rid of them as well

  10. #30
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    Quote Originally Posted by Doug_MPS6 View Post
    The relevant and oft-cited principle is that "the N2 molecule is bigger than the O2 molecule and the improved tyre pressure retention arises by virtue of the fact that the larger N2 molecules don't migrate through the porous rubber so easily". The fact that N2 molecules still migrate means that this sought after advantage plainly only applies to the ~21% of the air in your tyre that isn't N2 (e.g, the O2 component).

    I still have trouble with this assertion, as the empirically measured covalent radii for the two elements in picometers (pm, where 100pm = 1 Angstrom), with an accuracy of about 5 pm, are 65pm for N and 60 for O (i.e damn near identical within the limits of error), but in fact the N-N bond distance is actually smaller at 109.76pm while O-O bond distance is 120.74pm , although bond distances expressed thus can be misleading due to differences in bond strength.

    Whatever the rationale, in my view, unless it is for very specialist purposes, such as aircraft (and both my planes ran normal air in their tyres), and assuming you are normally handy to a service station to routinely check your tyre pressures, as you should, stressing over such a tiny advantage is a waste of time and money and merely a selling gimmick to certain tyre dealers exploiting tuners. The only possible useful differences some might care to mention are slight differences in coefficient of thermal expansion between the two gases with changes in temperature, almost certainly irrelevant and not easily compared considering all the other heat influences unless you are on a racetrack, while thermal conductivities of the two gases are the same at 0.015 W/m/degree C.

    And plainly, with pressure acting universally and equally in all directions against the constraints of the void it occupies, it doesn't matter what the hell gas your tyres are filled with (whether it is oxygen 02, nitrogen N2, hydrogen H2, methane CH3 or Uranium Hexafluoride UF6 or any other gas), and assuming equal set pressures and all else being equal, it is only in your head if you think the ride feel or roll resistance is any different to that achieved with straight air.

    Saving the $6/tyre will buy you a coffee and cake!
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  11. #31

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    Even worse than Radon in your tyres would be Uranium Hexafluoride UF6. Within a reasonable range of temperature and pressure, it can be a solid, liquid, or gas. Solid UF6 is a white, dense, crystalline material that resembles rock salt. It's very expensive, corrosive, radioactive, and explosive. Uranium hexafluoride does not react with oxygen, nitrogen, carbon dioxide, or dry air, but it does react with water or water vapor, sometimes violently, as in inadvertent bulk release from storage. For this reason, UF6 is always handled in leak tight containers and processing equipment. When UF6 comes into contact with water, such as water vapor in the air, the UF6 and water react, forming corrosive hydrogen fluoride (HF) and a uranium-fluoride compound called uranyl fluoride (UO2F2). Not the best stuff to be around. Of course, y'all needed to know this!
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    I been using Glider fuel in the tyres & tubes for as I knew how too & I will still use it.
    for Glider fuel

  13. #33
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    Quote Originally Posted by Doug_MPS6 View Post
    Even worse than Radon in your tyres would be Uranium Hexafluoride UF6. Within a reasonable range of temperature and pressure, it can be a solid, liquid, or gas. Solid UF6 is a white, dense, crystalline material that resembles rock salt. It's very expensive, corrosive, radioactive, and explosive. Uranium hexafluoride does not react with oxygen, nitrogen, carbon dioxide, or dry air, but it does react with water or water vapor, sometimes violently, as in inadvertent bulk release from storage. For this reason, UF6 is always handled in leak tight containers and processing equipment. When UF6 comes into contact with water, such as water vapor in the air, the UF6 and water react, forming corrosive hydrogen fluoride (HF) and a uranium-fluoride compound called uranyl fluoride (UO2F2). Not the best stuff to be around. Of course, y'all needed to know this!
    Radioactive enough to make the tyres glow green?

    I'm thinking Green glowing tyres with Red glowing brake disk's would be a very christmas themed look

  14. #34
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    I got some tyres fitted today (2nd set in 3 weeks from the same place) and they didn't even attempt to sell me nitrogen inflation, although they offer it.

    But...I did hear them on the phone and in person trying to sell it to "Mum and Dad" consumers, so it seems it's just a margin builder for them...

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