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Old 07-09-2013, 07:42 PM   #1
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DIY On Board Co2 Thoughts

Hey guys, I was considering putting together a Co2 system for the jeep in the next couple days, and wanted your input and expirience.
Here's what I got so far: I can pick up an aluminum 10# co2 tank at a local welding supply for $120 + about $15 per exchange.
I figure a can air up about 15-20 33" tires per tank which is plenty for me.
I'm looking at this regulator which will give me 150 line psi:
http://www.polyperformance.com/shop/...tor-p-297.html
I will need some air hose and fittings, and figure out secure mounting too for cheap.
I like the idea of Co2 instead of a compressor for the reliability, and that I can remove it and use it elsewhere too if needed.
What are your thoughts?? I've heard Co2 can be somewhat unstable in different temperatures, will this affect tire pressure at different temps in a big way? Anyone else done this, are there cheaper options? Thanks in advance.

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Old 07-10-2013, 11:11 AM   #2
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I have been using a co2 tank for a few years and never had a problem with changing temperature pressures. I am on the beach all summer long where it gets hot and never had problems. However I now use a air compressor instead because of the cost filling up 35" tires when coming off the beach. CO2 is great the way it inflates so quickly but I do have a ARB dual compressor $800.00 that inflates tires quickly also. a 10# CO2 tank would fill 4 35" tires 3 times for me, I am on the beach 3 or 4 times a week so it got expensive. Hope this helps.

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Old 07-10-2013, 10:25 PM   #3
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I have a similar situation where a friend works for welding supply company, and he hooked me up with a used 10# tank and a new regulator for $100 (filled). The first time I used it, I froze up the air line. Friend told me that I had the pressure turned up too high. Haven't tried it again since getting that advice (only cause I haven't needed to). I mention this because the regulator in your link shows that it is a constant 150 psi. If you can't adjust it you may have same problem as I. I'm not at all knowledgeable on this subject, just wanting to provide my experience and hoping that someone else can chime in to help both of us avoid this problem.
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Old 07-11-2013, 12:32 AM   #4
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im in the same boat. I have an actual scuba tank filled with CO2 and am currently looking for a regulator.

walked in to a scuba shop and told the guy what I was trying to do. He said "OH I just made one of those for a bike shop." it was exactly what I needed, no silly gauges to break, you pretty much set the regulator at the PSI you want and leave it. apparently stuff designed for keeping humans alive under water is insanely expensive.

I have found a few promising leads on amazon, I know I need a valve with male CGA320 threads (the bottle) and a regulator that will attach to said valve.
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Old 07-11-2013, 12:42 AM   #5
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I thought about this for a wile also and ended up getting a Viair OBA system then bought a extra hose and synergy mount to locate the compressor under the hood. I routed the air filter under the dash and the tank under the back. I went this way due to the fact I wheel a lot and air down a lot so you have to ask yourself. Can you get a same day tank fill or is it like here in HI you pay 40-50 bucks for same day fill or 15-20 bucks for a 3 day turn around fill and you can only air up all 4 tires at max 4 times. at that rate you will spend the 400 bucks I have in my system on 20 times you went wheeling. Not to count I can run a train horn, lockers, air tools, and fill tires.
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Old 07-11-2013, 12:53 AM   #6
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I thought about this for a wile also and ended up getting a Viair OBA system then bought a extra hose and synergy mount to locate the compressor under the hood. I routed the air filter under the dash and the tank under the back. I went this way due to the fact I wheel a lot and air down a lot so you have to ask yourself. Can you get a same day tank fill or is it like here in HI you pay 40-50 bucks for same day fill or 15-20 bucks for a 3 day turn around fill and you can only air up all 4 tires at max 4 times. at that rate you will spend the 400 bucks I have in my system on 20 times you went wheeling. Not to count I can run a train horn, lockers, air tools, and fill tires.
you can get a LOT more than that out of a tank, but I see your point.
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Old 07-11-2013, 01:02 AM   #7
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you can get a LOT more than that out of a tank, but I see your point.

How man do you get? I have a few friends running co2 and running 35's and they said they can only fill up 4 times max before they have to fill the tank. well I guess it does matter how big the tank is also but I know there tank is not that big.
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Old 07-11-2013, 07:51 AM   #8
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Quote:
Originally Posted by JeePeters View Post
I have a similar situation where a friend works for welding supply company, and he hooked me up with a used 10# tank and a new regulator for $100 (filled). The first time I used it, I froze up the air line. Friend told me that I had the pressure turned up too high. Haven't tried it again since getting that advice (only cause I haven't needed to). I mention this because the regulator in your link shows that it is a constant 150 psi. If you can't adjust it you may have same problem as I. I'm not at all knowledgeable on this subject, just wanting to provide my experience and hoping that someone else can chime in to help both of us avoid this problem.
Thanks for the info, I really want to get this to work. Good compressors are too expensive for me right now.
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Old 07-11-2013, 07:53 AM   #9
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Quote:
Originally Posted by Tweak View Post
im in the same boat. I have an actual scuba tank filled with CO2 and am currently looking for a regulator.

walked in to a scuba shop and told the guy what I was trying to do. He said "OH I just made one of those for a bike shop." it was exactly what I needed, no silly gauges to break, you pretty much set the regulator at the PSI you want and leave it. apparently stuff designed for keeping humans alive under water is insanely expensive.

I have found a few promising leads on amazon, I know I need a valve with male CGA320 threads (the bottle) and a regulator that will attach to said valve.
Are the threads on a scuba tank different than what I would find on a standard co2 bottle?
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Old 07-11-2013, 07:24 PM   #10
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How man do you get? I have a few friends running co2 and running 35's and they said they can only fill up 4 times max before they have to fill the tank. well I guess it does matter how big the tank is also but I know there tank is not that big.
I havnt set mine up yet, but after all the research I have done I have concluded 30-40 tires. my bottle is considerably larger. its an actual scuba tank. 63 cubic feet
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Old 07-11-2013, 07:26 PM   #11
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Are the threads on a scuba tank different than what I would find on a standard co2 bottle?
from what I have found, yes. shittybilt and powertank use scuba tanks with CGA320 threads. I believe acetylene uses CGA580

this is the smittybilt valve
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Old 07-13-2013, 12:40 PM   #12
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Has anyone gotten a co2 tank from a gas supplier, and if so, what gauge did you use to make it work. I'm not sure what kind of threads come on these tanks
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Old 07-13-2013, 01:04 PM   #13
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I have a 10 lb cylinder from a welding supply shop, you just need to make sure you DO NOT get a co2 tank with a dip-tube, no dip-tube, that will put liquid through your regulator.

I got a Powertank bracket to mount to the rear upright bar and this regulator (except mine has 2 gauges) from Amazon, works very well and didn't cost a fortune.
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Old 07-13-2013, 01:30 PM   #14
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I have a 10# alum tank from a welding supply house (I traded my 15# steel tank for it). I run a "The Source" 150psi fixed regulator and added a handle and boot.

I bought a mount for it on ebay a while back, but they sent me a bracket for a 5#. I still need to get it swapped out for a 10# bracket.

I love it for the portability and speed. It can't be matched for refilling tires if you need to get back on the road quickly. CO2 is more stable than air, so your tire pressure will remain where you set it, longer than air will.



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Old 07-14-2013, 07:15 PM   #15
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Originally Posted by TXST8tj View Post
I have a 10# alum tank from a welding supply house (I traded my 15# steel tank for it). I run a "The Source" 150psi fixed regulator and added a handle and boot.

I bought a mount for it on ebay a while back, but they sent me a bracket for a 5#. I still need to get it swapped out for a 10# bracket.

I love it for the portability and speed. It can't be matched for refilling tires if you need to get back on the road quickly. CO2 is more stable than air, so your tire pressure will remain where you set it, longer than air will.
Do you know of a website or place to order the regulator? Thanks for the info
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Old 07-14-2013, 10:31 PM   #16
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