co2 for airing up.

[vegas_rubi]

Hello, I was looking at getting a compressor for airing up, but then someone mentioned using CO2 cartridges. Who's tried this? How did it work for you?

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[rvillano8188]

Hello, I was looking at getting a compressor for airing up, but then someone mentioned using CO2 cartridges. Who's tried this? How did it work for you?

Following...Very interested in this idea.

 

[drBassman]

Hello, I was looking at getting a compressor for airing up, but then someone mentioned using CO2 cartridges. Who's tried this? How did it work for you?

I know there are portable bicycle pumps that have CO2 cartridges for "during the ride / away from home" flat tires -- so one doesn't have to wear himself out pumping a tiny, portable bicycle pump...I imagine the volume necessary to air up a truck tire is *SUBSTANTIALLY* more than a bicycle tire...

 

[vegas_rubi]

https://www.4wheelparts.com/p/power-tank-10lb-package-a-system-candy-red-pt10-5240-cr/_/R-GNJC-PT10-5240-CR?gclid=Cj0KCQjwoKzsBRC5ARIsAITcwXGp0gy2MH51FWLa6ms-vcN12MDkBgSQpV7MjLpDY2PpukLAjUEW-sIaAucoEALw_wcB&ecmp=s:google_1749763888_65275301221__aud-320825497387:pla-695537521874_Power Tank_AASPT10-5240-CR_base_US&utm_source=google&utm_medium=cpc&utm_campaign=shopping&emlprox=out&ppcfon=1&gp=1&utm_source=google&utm_medium=cpc&sc_intid=AASPT10-5240-CR&ef_id=Cj0KCQjwoKzsBRC5ARIsAITcwXGp0gy2MH51FWLa6ms-vcN12MDkBgSQpV7MjLpDY2PpukLAjUEW-sIaAucoEALw_wcB:G:s&s_kwcid=AL!7836!3!340663032463!!!g!695537521874!&utm_source=google&utm_medium=cpc&utm_campaign=SC Shopping - NTM Desktop&ecmp=s:google_1749763888_65275301221__aud-320825497387:pla-695537521874
I've seen the bicycle ones as well, these are quite a bit larger!

 

[DebT]

I use this CO2 tank (not a cartridge). You’ll need a CO2 regulator and air hose. Just make sure when you’re done off roading, to put regular air back in the tires when you can. CO2 has smaller molecules than air and will eventually leak out of your tires. This setup was easier for me than a compressor although I bought a very compact compressor that I use now.

 

[DebT]

Oh, and I paid less than $100 for my CO2 setup!

 

[e36racer]

I plan on using a scuba tank. I don’t see needing to fill one all the way to 3,000 psi so I’ll probably get an old one that’s out of hydro for pretty cheap. They make adapters to put air lines and gauges on the scuba regulator valve, or Im sure the valve can get swapped out easily enough as well. Most dive shops only charge $4 to fill them. I’m hoping there is enough room underneath the body to mount it on a frame rail without it hanging down below the rail. Still waiting for mine to be built.

And as DebT said, co2 will need to be changed out. Really the co2 setups are designed to be more for emergency use than regular use.

 

[DebT]

I plan on using a scuba tank. I don’t see needing to fill one all the way to 3,000 psi so I’ll probably get an old one that’s out of hydro for pretty cheap. They make adapters to put air lines and gauges on the scuba regulator valve, or Im sure the valve can get swapped out easily enough as well. Most dive shops only charge $4 to fill them. I’m hoping there is enough room underneath the body to mount it on a frame rail without it hanging down below the rail. Still waiting for mine to be built.

And as DebT said, co2 will need to be changed out. Really the co2 setups are designed to be more for emergency use than regular use.

I had forgotten about scuba tanks. I am a scuba instructor and worked at a dive shop for many years. We did sell adapters for scuba tanks. Just remember, a shop won’t fill a scuba tank that is out of date on visual (annual) or hydro (every 5 years) inspections. Fills in my area are more than $4, but still cheaper than CO2 and it is easier to find a dive shop than someone to fill with CO2 (usually).

 

[e36racer]

My initial thought on an old tank is only ask them to fill it to 1,500-2,000. But you’re probably right, from a liability standpoint they shouldn’t. New tanks are not that expensive anyway, plus I have 4 so I could donate one to the truck.

I wonder how many 35’s can get filled from 15psi to 35psi on an AL80 at 3,000 psi? Time to call my mom (retired calculus teacher) and see how to calculate it.

 

[deanmc]

My initial thought on an old tank is only ask them to fill it to 1,500-2,000. But you’re probably right, from a liability standpoint they shouldn’t. New tanks are not that expensive anyway, plus I have 4 so I could donate one to the truck.

I wonder how many 35’s can get filled from 15psi to 35psi on an AL80 at 3,000 psi? Time to call my mom (retired calculus teacher) and see how to calculate it.

if you could figure out the volume of the internal airspace of the tire it would be a simple calculation. I wonder if tire companies have that spec somewhere?

 

[e36racer]

if you could figure out the volume of the internal airspace of the tire it would be a simple calculation. I wonder if tire companies have that spec somewhere?

For a 35x12.5x17 tire I come up with roughly 9,275 cubic inches, or about 5.37 cubic feet. So if my math is correct, to fill 4 tires (35x12.5x17) from 10 to 35psi that requires approximately 36 cubic feet of air. With that said, a tank with a volume of 0.18 cubic feet at 3000 psi should be enough for one fill. I think an AL80 is 0.39 cubic feet so that would be good to fill of all 4 tires from 10 to 35psi twice. For my calc I just used the outside dimensions of both the tire and rim (35x12.5 and 17x9) so it's only in the ballpark. Therefore, I think having an AL80 onboard should be more than sufficient. Plus it's plenty to run air tools as well (but maybe not a cut-off wheel). I sure hope I can fit one underneath next to the frame rail...

 

[deanmc]

For a 35x12.5x17 tire I come up with roughly 9,275 cubic inches, or about 5.37 cubic feet. So if my math is correct, to fill 4 tires (35x12.5x17) from 10 to 35psi that requires approximately 36 cubic feet of air. With that said, a tank with a volume of 0.18 cubic feet at 3000 psi should be enough for one fill. I think an AL80 is 0.39 cubic feet so that would be good to fill of all 4 tires from 10 to 35psi twice. For my calc I just used the outside dimensions of both the tire and rim (35x12.5 and 17x9) so it's only in the ballpark. Therefore, I think having an AL80 onboard should be more than sufficient. Plus it's plenty to run air tools as well (but maybe not a cut-off wheel). I sure hope I can fit one underneath next to the frame rail...

The volume of an AL80 is 80 cubic feet of air @ 3000psi. if you needed two fill 4 tires with an internal volume of 36 cubic feet you'd run short I think? Also since atmospheric pressure is 15psi wouldn't a tire mounted on a rim already have 15psi in it? I'm not a math geek but I know a little about scuba tanks as i'm in the scuba business! I might have to deflate one of my tires and do a little experiment!

 

[SandSurfer]

A 12 lb. C02 bottle will fill 37's from 15PSI --> 30PSI at least 10 times, 40 tires. The expansion rate of C02 liquid to gas is 535 : 1 @ 60* F so with 12 lbs of C02 you can fill a lot of tires!

 

[e36racer]

The volume of an AL80 is 80 cubic feet of air @ 3000psi. if you needed two fill 4 tires with an internal volume of 36 cubic feet you'd run short I think? Also since atmospheric pressure is 15psi wouldn't a tire mounted on a rim already have 15psi in it? I'm not a math geek but I know a little about scuba tanks as i'm in the scuba business! I might have to deflate one of my tires and do a little experiment!

36 cubic feet fills all 4 tires. One atmosphere of air in a tire is 0 psi because it’s equal to the outside. Put two atmospheres of air inside a tire and it’s 15 psi, three atmospheres is 30psi

 

[double J]

Make sure you use a high pressure fixed regulator. A normal regulator will freeze up. Here is the one I use:


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