Why not a SCUBA Tank for tire inflation? - JeepForum.com

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post #1 of 41 Old 06-22-2009, 07:09 PM Thread Starter
medcop
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Why not a SCUBA Tank for tire inflation?

I dive, dive alot actually, technical, Rebreather, Cave...so on.

I have several tanks around that just sit not being used. I see all the products for using CO2 for tire inflation.

Well, an AL80 SCUBA tank actually holds 77 cubic feet of air at 3000psi. I have an adapter that plugs into a inflator hose of my first stage regulator to air tires. However, I have never used it to inflate a tire.

Someone want to do the math and tell me how many tires can be filled with 77cubic feet of air at 3000psi?

Heck to keep size down an AL40 holds 40cu ft of air at 3000psi.

I could do the math, but how many cu feet does a stock 32" Rubi tire hold at say 35psi?

Thanks

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post #2 of 41 Old 06-22-2009, 07:27 PM
nukemustang
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http://www.oramagazine.com/pastIssue...ech-brief.html

I think it talks about various sizes in the reading on this page

Tim

Last edited by nukemustang; 06-22-2009 at 07:41 PM. Reason: stupid urls
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post #3 of 41 Old 06-22-2009, 07:43 PM
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A SCUBA tank will work, with a regulator.

I use an SCBA tank with a welding regulator @ 2200psi. I'm not sure how many tires I can fill though, but it does the job great. I am going to switch over to a 4500psi tank in the near future. (smaller tank and more pressure... its a no brainer)

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post #4 of 41 Old 06-22-2009, 07:50 PM
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Tank looks awesome! I am going to use a scuba tank myself. Do you know how much a new scuba tank costs new?
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post #5 of 41 Old 06-22-2009, 07:53 PM
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I have no idea. All I payed for was the regulator, and thread adapter from the welding shop. I got the tank free from the firehouse. Also where I'm going to get the 4500psi tank from. Well as soon as the Chief remembers to get it to me.
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post #6 of 41 Old 06-23-2009, 05:40 AM
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SCUBA tanks run about $120 the regulator in the picture will run about the same. Before you go investing in these items, find out where you can have them filled, most dive shops require you to have divers certification before they will fiull them. You may find a welding shop that will fill them. Just thought you should have a heads up before you invest any money.

Good luck
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post #7 of 41 Old 06-23-2009, 06:58 AM
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Most good paintball pro shops should be able to fill your 3000 and 4500 tanks as long as they are not going to be used for consumption.
The reason most guys use a co2 tank is, co2 is a very cold liquid and expands into a gas as it warms so it keeps replenishing itself from a liquid to a pressurized gas as it is used. And you get more volume from co2.
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post #8 of 41 Old 06-23-2009, 08:23 AM
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Quote:
Originally Posted by gmuddy View Post
SCUBA tanks run about $120 the regulator in the picture will run about the same.
OUCH!!!

Here's my Co2 tank

Tank = $85 (http://www.beveragefactory.com/draft...anks/co2.shtml)
Regulator = $38 (http://www.wheelersoffroad.com/co2systems.htm)
30ft hose = $38 (http://www.wheelersoffroad.com/co2systems.htm)

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post #9 of 41 Old 06-23-2009, 08:34 AM
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Quote:
Originally Posted by N2rock View Post
How many tires (what size tires) can you fill per tank?

I just had one of those, hmmm moments. I have a 10LB tank that I haven't needed for a couple years and it might look good in Rescue Green in the back of the 'ol JK.

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post #10 of 41 Old 06-23-2009, 08:51 AM
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Originally Posted by wTheOnew View Post
How many tires (what size tires) can you fill per tank?

I just had one of those, hmmm moments. I have a 10LB tank that I haven't needed for a couple years and it might look good in Rescue Green in the back of the 'ol JK.
I've never pushed my luck to see how many fills I can get out of it.

I have 35's, I run them at 10-15psi on the trail, and 30psi aired up. I have heard that I can get 4 complete air-ups from a tank. But I have always refilled it after 2 complete air-ups. It only costs me $10 to fill the tank. So I would rather be safe than sorry.

for details and info on our JK's, check out http://n2rock.com

His: '07 Unlimited X, Jeep Green, Hardtop, auto, 5.13, 2.5" RC lift and too many mods to list

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If you made a snuggy out of a Shamwow, ....would you have to get up off the couch to pee?
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post #11 of 41 Old 06-23-2009, 10:22 AM
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Quote:
Originally Posted by N2rock View Post
I've never pushed my luck to see how many fills I can get out of it.

I have 35's, I run them at 10-15psi on the trail, and 30psi aired up. I have heard that I can get 4 complete air-ups from a tank. But I have always refilled it after 2 complete air-ups. It only costs me $10 to fill the tank. So I would rather be safe than sorry.
I started weighing my tank before and after each trip and when i know it is getting close to empty just so I dont run out. The weight of your empty tank is stamped near the neck.
I run 12 PSI on the trail and 27-28 on the street. I use 2lbs each time to fill all 4 35's I have not measuredd it with the 37's though.

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post #12 of 41 Old 06-23-2009, 10:39 AM
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Quote:
Originally Posted by Muggsie View Post
Most good paintball pro shops should be able to fill your 3000 and 4500 tanks as long as they are not going to be used for consumption.
The reason most guys use a co2 tank is, co2 is a very cold liquid and expands into a gas as it warms so it keeps replenishing itself from a liquid to a pressurized gas as it is used. And you get more volume from co2.
All the liquid CO2 I have seen was at ambient temp, and would cool down as it expands with use.
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post #13 of 41 Old 06-23-2009, 10:45 AM
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Originally Posted by Brent_f70 View Post
The weight of your empty tank is stamped near the neck.
Really? I did not know this. And since I never weighed it empty, I had no way to determine the amount still in there. Good to know

Quote:
Originally Posted by Brent_f70 View Post
I use 2lbs each time to fill all 4 35's I have not measuredd it with the 37's though.
Also good to know considering I'm on 35's. So I can get 4 complete air-ups with some CO2 to spare with my 10lb tank.

for details and info on our JK's, check out http://n2rock.com

His: '07 Unlimited X, Jeep Green, Hardtop, auto, 5.13, 2.5" RC lift and too many mods to list

Hers: '08 X Red Rock, soft top, auto. Bunch of mods

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If you made a snuggy out of a Shamwow, ....would you have to get up off the couch to pee?
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post #14 of 41 Old 06-23-2009, 01:12 PM
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Why not run an ARB compressor with the tire inflation kit that way you never run out. I have the arb tire inflation kit. It comes with 20' of hose, which is almost long enough to reach the tires of my trailer.

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post #15 of 41 Old 06-23-2009, 01:45 PM
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Quote:
Originally Posted by Prot View Post
Why not run an ARB compressor with the tire inflation kit that way you never run out. I have the arb tire inflation kit. It comes with 20' of hose, which is almost long enough to reach the tires of my trailer.
CO2 is faster, won't overheat, and can power air tools.

But most important- I get this cool looking tank mounted in the back of my JK

for details and info on our JK's, check out http://n2rock.com

His: '07 Unlimited X, Jeep Green, Hardtop, auto, 5.13, 2.5" RC lift and too many mods to list

Hers: '08 X Red Rock, soft top, auto. Bunch of mods

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At this point if Obama tried to move a little to the right, he would trip over Stalin's corpse.
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