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Tractor Talk Discussion Forum

Re: Tire pressure

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55deere70

01-05-2013 17:16:12
75.138.191.254



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Sounds like some people are filling their tires with air from the cow barn...




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willie in mn

01-05-2013 17:52:17
67.142.168.22



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 Re: Tire pressure in reply to 55deere70, 01-05-2013 17:16:12  
The nitrogen theory is a sales gimmick. Ambient air, what is out there in nature, is 80% +/- nitrogen, & 20% other gasses & water vapor. Thing about bottled nitrogen is that the process of compressing & filling the tanks squeezes out the water. Same thing happens with air. Ever notice the water collected in compressor tanks? Water vapor expands with heat more than the other gasses. A good drier, such as used inline for paint guns, will give the same result without the major expense. Size of molecules has very little, if any, effect on leakage.
Wayne started out right, 10 deg temp change makes approx 1 psi pressure change. To stretch the point a bit, winter air does actually contain a bit less water vapor tham summer air.
Willie

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