What is everyones opinions on getting a system like this instead of mounting compressor/tank?

http://www.offroadtuff.com/OriginalSource.htm

 

It'll run out sooner or later.

 

I think HITMONEY in the Sunshine state forum has one. Might want to look him up or PM him

 

Looking to get this myself it is a Constant Duty Onboard Air System from viair. Not that the system you are looking at is a bad one I just want something that will not run down during a trip.

 

I run a 10 lb CO2 tank and love it. Its just as fast and easy as filling up at the gas station. You can run air tools for a short time if you need them. You can reseat a tire with a popped bead... Good stuff. Yes, they obviously run out. I can get it filled for $14-20 depending on where I go. I run 33's at about 10 psi on the trail and I can prob air up a total of 24ish tires back to street pressure. Of course, thats if I am not airing up friends or attaching the air nozzle attachment to blow the dust out of the cab and a/c vents. I know lots of guys who wheel with them and love them. We have a welding/cylinder supply company here in town that sells them for way cheaper than the name brands. I got an alum tank with handle, a 150psi regulator, airchuck, 30' hose for a little over $200. Oh yeah, plus a great mount for it. Just needed some hose clamps to the roll cage and I was done. I did buy some extra attachments and toys for it, but they werent necessary...

 

Hi Folks,
I installed a very similar system in my JK. I've only used it a couple of times to help out a couple of motorists with low tire pressures. I haven't even noticed a drop in the tanks pressure gauge. I guess if you start running an impact wrench it would drop rapidly but I use an electric impact so it's a mute point. It seems to fill the void that I wanted covered but time will tell. I can always tie in a compressor to take care of the "just in case" scenerio. Take care... Mike

 

Your pressure gauge wont change until it is empty. Pressure doesnt measure the volume. Since CO2 is a liquid, you can check how much is in the tank by weighing it. The tank itself should have a TARE weight stamped into it. Subtract the total weight and you can tell how much CO2 yo have left.

On a side note, they dont fill them all the way with 10 pounds. The liquid needs room to expand in heat, or it will blow the pressure relief valve. Most of the time they hit it with about 9.5 pounds. I have carried mine in my black JK with the hard top on, sitting in 117* heat and have not had any probs... FWIW.