Inflate tire with nitrogen
12-20-2004, 07:35 PM
#41
After doing a little research on this, it seems that the reason Nitrogen is used is because of the 0% water content. If you figure normal air to contain around 30% water vapor, then there is potentially enough water to a) freeze in the pores of the rubber, increasing internal breakdown of the rubber (water expands when it freezes), and potentially causing balance problems for a tire that is accelerating from 0 to 150+ MPH almost instantly.
FWIW..
FWIW..
12-22-2004, 08:33 PM
#44
01-21-2005, 07:52 PM
#46
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cheap source of DRY AIR
The water content in the air that comes out of common air compressors is what needs to be avoided. For the temprature range that is associated with with Tires, most gasses will behave like "ideal gasses"
The coefficient of expansion is about the same for all the common gases at ordinary temperatures; it is 1/273 of the volume at 0°C per degree rise in temperature. The Kelvin, or absolute, scale is based upon this behavior. Charles's law concerning the expansion of gases states that the volume of a gas is directly proportional to its absolute temperature.
The most easily available source for "dry air" is from a scuba bottle. All water is removed from air before it is used to fill scuba tanks. It is easy to get an adapter that will fit on the low pressure side ( 110 to 130 psi ) of a scuba regulator. I use it to fill all of my tires.
Air is a mixture of gases. Mostly Nitrogen and Oxygen.
If you believe that Oxygen escapes from tires much faster than Nitrogen just overfill your tires with dry air for a few days and all of the Oxygen will escape through the tires and you will be left with nothing but Nitrogen.
The coefficient of expansion is about the same for all the common gases at ordinary temperatures; it is 1/273 of the volume at 0°C per degree rise in temperature. The Kelvin, or absolute, scale is based upon this behavior. Charles's law concerning the expansion of gases states that the volume of a gas is directly proportional to its absolute temperature.
The most easily available source for "dry air" is from a scuba bottle. All water is removed from air before it is used to fill scuba tanks. It is easy to get an adapter that will fit on the low pressure side ( 110 to 130 psi ) of a scuba regulator. I use it to fill all of my tires.
Air is a mixture of gases. Mostly Nitrogen and Oxygen.
If you believe that Oxygen escapes from tires much faster than Nitrogen just overfill your tires with dry air for a few days and all of the Oxygen will escape through the tires and you will be left with nothing but Nitrogen.
01-27-2005, 07:11 PM
#47
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Originally posted by ZpikeZ
Not sure if it would reduce unsprung weight, but i know that helium and hydrogen are flammable.
Flammable tires + blowouts on highway = major explosion.
Not sure if it would reduce unsprung weight, but i know that helium and hydrogen are flammable.
Flammable tires + blowouts on highway = major explosion.
01-27-2005, 11:02 PM
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Re: still skeptical
Originally posted by Murry
Why is nitrogen more STABLE than DRY air? Why do people think that it won't change temperature like air--(Both can be condsidered ideal gases)? What it the maximum temperature inside a tire? The only theory that holds water is corrosion so far....
BTW-- Just because someone has a nice looking website doesn't make the information accurate. Their point might be correct but their wording needs help.
O2 doesn't go boom fuel does.
-Murry
Why is nitrogen more STABLE than DRY air? Why do people think that it won't change temperature like air--(Both can be condsidered ideal gases)? What it the maximum temperature inside a tire? The only theory that holds water is corrosion so far....
BTW-- Just because someone has a nice looking website doesn't make the information accurate. Their point might be correct but their wording needs help.
O2 doesn't go boom fuel does.
-Murry
Last edited by GY-Z; 01-27-2005 at 11:05 PM.
01-27-2005, 11:10 PM
#49
The reason to use Nitrogen is the 0% water content.
As air is heated, it can hold more water vapor. Cooling the air (like letting the tire sit overnight) can cause that water to condense into a liquid, causing the tire pressure to fall (liquid takes less volume than gas). Heat the tire again and the water turns back into vapor.
Simplified, but that is the reason.
As air is heated, it can hold more water vapor. Cooling the air (like letting the tire sit overnight) can cause that water to condense into a liquid, causing the tire pressure to fall (liquid takes less volume than gas). Heat the tire again and the water turns back into vapor.
Simplified, but that is the reason.
01-27-2005, 11:39 PM
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Originally posted by I Hate JDM
Helium is a noble gas Smart Guy...it isn't even flamable.
Helium is a noble gas Smart Guy...it isn't even flamable.
Imagine how many people would have blown up by now if helium was flamable? Ballons have helium, your talking a time bomb specially at parties were people smoke.
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