|
When they inflate tires.....................
#348086
06/15/09 05:33 PM
06/15/09 05:33 PM
|
Joined: Jan 2003
Posts: 5,906
Athens, Greece
Pyper70
OP
master
|
OP
master
Joined: Jan 2003
Posts: 5,906
Athens, Greece
|
do they use some special air in the compressor or a chemical for sealing?
My old man was telling me this as I noticed all my tires on the 69 went from 32 down to 27.5....he laughs as his GMC van has held 34psi on all 4 tires for 6 years
Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s
|
|
|
Re: When they inflate tires.....................
[Re: Scott Carl]
#348089
06/15/09 05:47 PM
06/15/09 05:47 PM
|
Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
|
I Live Here
Joined: May 2003
Posts: 15,487
Florida
|
an inner tube nitrogine maybe compressed air gas co2 out of the fix a flat with sealent from a can 
|
|
|
Re: When they inflate tires.....................
[Re: Pyper70]
#348091
06/15/09 06:30 PM
06/15/09 06:30 PM
|
Joined: Jan 2003
Posts: 25,200
Upper Midwest
MoparforLife
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 25,200
Upper Midwest
|
Quote:
do they use some special air in the compressor or a chemical for sealing?
My old man was telling me this as
Get some respect. 
|
|
|
Re: When they inflate tires.....................
[Re: MoparforLife]
#348092
06/15/09 06:37 PM
06/15/09 06:37 PM
|
Joined: Aug 2003
Posts: 12,291
Kent, Wa
340SHORTY
Truck Nut
|
Truck Nut
Joined: Aug 2003
Posts: 12,291
Kent, Wa
|
Nitrogen molecules are larger than air molecules,,, hench less leakage
I am truckless..
|
|
|
Re: When they inflate tires.....................
[Re: 340SHORTY]
#348093
06/15/09 06:54 PM
06/15/09 06:54 PM
|
Joined: Apr 2005
Posts: 15,134
Kelowna, B.C. Canada
DPelletier
I Live Here
|
I Live Here
Joined: Apr 2005
Posts: 15,134
Kelowna, B.C. Canada
|
The use of nitrogen in passenger car tires is nothing but a sleazy cash grab by the retailers. Did you use a different gauge both times you checked the pressures? Were the tires at the same temperatures both times?  Dave
1970 Super Bee 440 Six Pack
1974 'Cuda
2008 Ram 3500 Diesel
2006 Ram 3500 Diesel
2004.5 Ram 2500 Diesel
2003 Ram 3500 Diesel
2006 Durango Limited
[url] http://1970superbee.piczo.com [/url]
|
|
|
Re: When they inflate tires.....................
[Re: Publicbottle]
#348095
06/15/09 08:19 PM
06/15/09 08:19 PM
|
Joined: Sep 2005
Posts: 12,481
Chino Valley
RodStRace
I Live Here
|
I Live Here
Joined: Sep 2005
Posts: 12,481
Chino Valley
|
and that there nightrogen will clean yer engeen too, I saar it on TV! The fact that nitrogen is a large part of air means the returns are less to do with moisture and stability ( the other gasses change more easily to temperature) than to the fact some people have to have what the racers have and there are others willing to sell it to them and advertise it to the masses to cover the costs and generate a profit. Every time I see another grimy set of wheels with those caps, I recognise that there is one more person that doesn't check their tire pressures, but is willing to spend a bit more to keep it stable... 
|
|
|
Re: When they inflate tires.....................
[Re: deansrr]
#348098
06/15/09 10:50 PM
06/15/09 10:50 PM
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Quote:
Nitrogen will keep your tires running cooler (longer life),
Can you provide anything to back that up?
Quote:
keeps moisture away, less corrisoin between rim and tire bead
It doesn't keep moisture AWAY, it's just that hopefully there's less moisture in the N2 to begin with. Since there's much less O2, rust/corrosion is slowed way down.
Quote:
air pressure doesn't change as much,
I'm pretty sure the reason for this is the fact that there's not much moisture in N2 Atmosphere is largely N2, anyhow, and I can't imagine that the difference in delta T change for N2 and O2 is very much.
You PROBABLY could accompomplish the same thing with CO2, and except for inhibiting rust/ corrosion, you could probably use dried air the point being that there's nothing really magic about N2
Last edited by 440sixpack; 06/15/09 10:51 PM.
|
|
|
Re: When they inflate tires.....................
#348099
06/15/09 10:57 PM
06/15/09 10:57 PM
|
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
|
Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
|
I'd air em up in your shop rather than at a station as I cant believe the amt of water I see spewing out of the air chucks at most of those places
live every 24 hour block of time like it's your last day on earth
|
|
|
Re: When they inflate tires.....................
#348100
06/15/09 11:16 PM
06/15/09 11:16 PM
|
Joined: Feb 2009
Posts: 2,034
NW Indiana
deansrr
top fuel
|
top fuel
Joined: Feb 2009
Posts: 2,034
NW Indiana
|
Quote:
Quote:
Nitrogen will keep your tires running cooler (longer life),
Can you provide anything to back that up?
Quote:
keeps moisture away, less corrisoin between rim and tire bead
It doesn't keep moisture AWAY, it's just that hopefully there's less moisture in the N2 to begin with. Since there's much less O2, rust/corrosion is slowed way down.
Quote:
air pressure doesn't change as much,
I'm pretty sure the reason for this is the fact that there's not much moisture in N2 Atmosphere is largely N2, anyhow, and I can't imagine that the difference in delta T change for N2 and O2 is very much.
You PROBABLY could accompomplish the same thing with CO2, and except for inhibiting rust/ corrosion, you could probably use dried air the point being that there's nothing really magic about N2
nitrogen is pretty much dry air, that is what I meant by keeping the moisture out, without the humity of moist air your tirs will run cooler thus extending the life of your tires.
1973 Road Runner
1974 Satellite (for sale)
1973 240z (wifes)
1993 Ramcharger (thanks Devil)
2002 Honda S2000
|
|
|
Re: When they inflate tires.....................
[Re: deansrr]
#348103
06/16/09 12:54 PM
06/16/09 12:54 PM
|
Joined: Apr 2005
Posts: 15,134
Kelowna, B.C. Canada
DPelletier
I Live Here
|
I Live Here
Joined: Apr 2005
Posts: 15,134
Kelowna, B.C. Canada
|
Quote:
Quote:
The use of nitrogen in passenger car tires is nothing but a sleazy cash grab by the retailers.
Did you use a different gauge both times you checked the pressures? Were the tires at the same temperatures both times?
Dave
I must be one of those sleazy cash grab tire retailers because I sell it and install FREE on all tires I sell! Been using it for over 4 or 5 years now, have had great luck. Nitrogen will keep your tires running cooler (longer life), keeps moisture away, less corrisoin between rim and tire bead, less rim leaks (if you have had a Chrysler with chrome rims you know what I mean) and yes air pressure doesn't change as much, It won't stop the air from leaking' but with the larger moducles it slow its down and without the moisture it doesn't change as much. Again I'm only a sleazy cash grab tire dealer, so what do I know after 35+ years in the business 
If you're providing it for free, then you're not sleazy! It's STILL a waste of time, though.
For airplanes that see SEVERE fluctuations in altitude, temperatures, speed and impacts; sure. For passenger car tires ITS A WASTE OF TIME.
Tire temperature is a function of load, deformation and pressure. I seriously doubt tires running nitrogen at the same pressure as air run measureably cooler in a passenger car application.
Moisture in compressed air is a problem that can and should be addressed with an appropriate air dryer and again, nitrogen isn't needed for that either.
Sorry, but most soccer moms are being sold a bill of goods based on some accurate science that makes little to no difference in the real world and they're being charged an extra $5.00 a tire for it usually.
my 2 pennies, again.
Dave
1970 Super Bee 440 Six Pack
1974 'Cuda
2008 Ram 3500 Diesel
2006 Ram 3500 Diesel
2004.5 Ram 2500 Diesel
2003 Ram 3500 Diesel
2006 Durango Limited
[url] http://1970superbee.piczo.com [/url]
|
|
|
Re: When they inflate tires.....................
[Re: deansrr]
#348105
06/16/09 05:40 PM
06/16/09 05:40 PM
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Quote:
I have seen it help, what are you basing your facts on? do you work in this field and know what is really going on?
D and I both worked in the HVAC field, and although I'm not to the point of engineering, I think he and I both have a pretty good idea of the thermodynamics of gases.
The idea that a drop or two of moisture in a tire can make some magic measurable degree (no pun) of difference in temperature is ridiculous. I WILL agree that dry air might help prevent rust/ corrosion of rims, but that's about it.
The difference in molecule size between O2 and N2 that would make the arguement of "preventing leakage" is again off the mark.
www.getnitrogen.org/pdf/graham.pdf
The other obvious question we all have to ask nowadays is "is this green?"
So let's add up the tremendous amount of energy it takes to extract Nitrogen from wherever you are going to get it, IE liquify air, all the energy it must take to filter purify, etc, and the transportation of VERY heavy bottles and storage containers as opposed to....
just running a compressor and possibly an air dryer/ filter
|
|
|
|
|
the air we breathe is almost 80% nitrogen 