question about co2 on your 40

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wtmtnterror said:
So you need a 20# tank for 35s or bigger?
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????

Nope. As I mentioned above I can fill up to three sets of 35x12.5s from on 5 pound bottle.

If you don't air down extremely and don't insist on maxing out the pressure listed on the sidewall, you might be able to get two sets of 42x15s out of a 5 pound bottle.


For the past couple of years the areas where I have been doing my serious wheeling happen to have roadhouses located within 10 miles of the trailheads. So I usually just run down the shoulder of the highway to the rodhouse and fill up there instead. SO it has been a while since I had a completely fresh bottle that I ran empty airing up when we got back to the road. SO my memory may be fuzzy. I know that you can get at least as much as I mention above from a 5 pound bottle. You might get more.


Mark...
 
pbgbottle said:
whats a lock on chuck ???
Click to expand...


A tire chuck with a trigger like lever sticking out at the head. You squeeze the lever to put the chuck on the valve stem and then release it. This locks the chuck on the stem until you squeeze the lever again to release it.


Mark...
 
I've been running a Co2 bottle for quite a while. My original mount had it in the back passenger corner right next to the tailgate. A mishap, at Tellico, had me going backward down "school-bus" and another rig moving forward to keep me from going all the way down. Scary indeed. After the sudden stop. and damage evaluation. My tank mount (at the time a standard fire extinguisher mount) broke free and put the tank on a position where the regulator might have been broken off, by impacting my cage. The only thing preventing that was the handle that shrouds the regulator (powertank tubular handle deallie-O). That was the scariest thought of the whole ordeal. Had the regulator been sheared... Since then I relocated the mounting position to where in the event of a roll/crash, whatever, the tank and regulator should not impact anything at all. and in the off chance it does, it gets ejected from the rig, not into the driver/passenger compartment.

My mounting position will not work on a rig with jump seats as it is on the driver side wheelwell, horizontal, with the regulator right behind the driver seat. Yes I have to remove it to fill tires, etc..., but I don't mind. With jump seats it may be mountable beneath one on either side. All I know, is I feel much safer where I have it now.
 
green73 said:
I've been running a Co2 bottle for quite a while. My original mount had it in the back passenger corner right next to the tailgate. A mishap, at Tellico, had me going backward down "school-bus" and another rig moving forward to keep me from going all the way down. Scary indeed. After the sudden stop. and damage evaluation. My tank mount (at the time a standard fire extinguisher mount) broke free and put the tank on a position where the regulator might have been broken off, by impacting my cage. The only thing preventing that was the handle that shrouds the regulator (powertank tubular handle deallie-O). That was the scariest thought of the whole ordeal. Had the regulator been sheared... Since then I relocated the mounting position to where in the event of a roll/crash, whatever, the tank and regulator should not impact anything at all. and in the off chance it does, it gets ejected from the rig, not into the driver/passenger compartment.

My mounting position will not work on a rig with jump seats as it is on the driver side wheelwell, horizontal, with the regulator right behind the driver seat. Yes I have to remove it to fill tires, etc..., but I don't mind. With jump seats it may be mountable beneath one on either side. All I know, is I feel much safer where I have it now.
Click to expand...

A CO2 tank will not violently discharge like you are describing. You are thinking of compressed air or nitrogen tanks. Think of a Co2 fire extinguisher and you have a better idea of what would happen. Probably scary but not likely life threatening or "missile" like.
 
As to the hose, will either nylon or polyester work?

Ed
 
Azrocks said:
A CO2 tank will not violently discharge like you are describing. You are thinking of compressed air or nitrogen tanks. Think of a Co2 fire extinguisher and you have a better idea of what would happen. Probably scary but not likely life threatening or "missile" like.
Click to expand...

I did not know this, so that's why I placed mine where I did. Not to sound like a dick, but can you please provide back-up for this. I know the expansion rate of Co2 is much greater than air, and that is confusing me right now. It sounds like you know what you are talking about, but for those of us less knowledgeable, I feel it would make some of us feel a little safer with some back-up.
Since I got rid of the jump seats placing the tank where I did works well for me. The placement leaves very little risk of even chancing damage to the regulator. For me placement anywhere else just isn't worth the risk. I know it isn't ideal for everyone, as we all use our rigs differently, and are physically set-up to our own needs.

Again, I don't want to question you on the perceived "danger" just some explanation for education sake. I like to be well informed, that way if anyone asks why, etc.. , I can also pass along competent information.
 
i've heard this to ,that it won't violently discharge because of the phase change or something .from a liquid to a gas . but at work i deliver 50lb tanks sometimes and they told us it will rocket off like a missle ?
 
Compressed air (in a tank) is still compressed air. If you break the valve off the top, all that air will want out fast - like 3000psi fast.

CO2 in a tank is not (all) in gaseous form. It varies with temperature, but at room temp, the tank will be right around 800psi. This is the 'balance' pressure. If the pressure drops (as you let gas out), more of the liquid CO2 will turn into gas to maintain equilibrium. This is part of the reason we love CO2 - about an ounce of CO2 in liquid form expands to about 5 gallons of gaseous. But it doesn't happen instantly, and it requires a bit of heat as well, so as the things around it start to freeze up, the transformation slows down as the 'balance' pressure drops (see graph below for reference).

i13.gif
 
Cool! thanks!
 
green73 said:
I did not know this, so that's why I placed mine where I did. Not to sound like a dick, but can you please provide back-up for this. I know the expansion rate of Co2 is much greater than air, and that is confusing me right now. It sounds like you know what you are talking about, but for those of us less knowledgeable, I feel it would make some of us feel a little safer with some back-up.
Since I got rid of the jump seats placing the tank where I did works well for me. The placement leaves very little risk of even chancing damage to the regulator. For me placement anywhere else just isn't worth the risk. I know it isn't ideal for everyone, as we all use our rigs differently, and are physically set-up to our own needs.

Again, I don't want to question you on the perceived "danger" just some explanation for education sake. I like to be well informed, that way if anyone asks why, etc.. , I can also pass along competent information.
Click to expand...

Sorry, just noticed this question. It looks like some good information has already been given, but I'll add mine as well minus all the scientific stuff. I worked as a Hazmat technician/manager for quite some time under the Risk Management department of a large company. We had to do all sorts of training and stuff, one of which included compressed tanks.

The basics of the difference as stated before is that CO2 is in liquid form and and is under much less pressure than say compressed air. A typical scuba tank is at around 3000 psi and the energy is contains is in it's most "ready" state right now. As long as there is liquid in the tank, the pressure in a CO2 tank is determined ONLY by the temperature. At room temperature (70 degrees F) its about 853 psi. This is still a lot of energy but in the event of a catostrophic failure of a CO2 tank the energy cannot be released as fast due to the liquid nature of the CO2. Sure, the CO2 will go to a gaseous state and be released but not like a 3000 psi air tank bursting.

Again, not the end all of the issue but just some more food for thought. I feel just fine with a CO2 tank inside my vehicle (as long as it's mounted correctly) but would never feel safe with a compressed air or nitrogen tank.

Just my opinion. I'm not an expert I just play one on TV.
 
Harbor Freight CO2 Regulator, $35: http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=94841

It is possible, if not advisable, to fill right from the tank without a regulator. It's way faster. :bounce2:

I got an out-of-date 20lb bottle from Craigslist for $40 and swapped it for a full new one for $50, so $90 total. I kinda with I had a 10 lb one instead, but they didn't want to swap sizes at the 2 welding supply places I tried. The only other size they had was 15lb.
 
Fast Eddy said:
Harbor Freight CO2 Regulator, $35: http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=94841

It is possible, if not advisable, to fill right from the tank without a regulator. It's way faster. :bounce2:

I got an out-of-date 20lb bottle from Craigslist for $40 and swapped it for a full new one for $50, so $90 total. I kinda with I had a 10 lb one instead, but they didn't want to swap sizes at the 2 welding supply places I tried. The only other size they had was 15lb.
Click to expand...

They really do have an impressive "air" section at HF.
 
another weird thing ,(the guy didn't have time to answer questions for me ,so i didn't get the answers):doh:
.i had my tank filled the other week and it wasn't quite empty .the guy layed it down cranked open the valve to empty it .the bottle didn't move .don't no what the escaping pressure was . in the end there was quite abit more co2 in there than i had thought . and what happened next was interesting , the co2 stopped hissing ,
i thought it was empty but it wasn't ,the bottle had frozen itself solid . so he had to put it on a special heater .to melt it ,then he filled it and all was good . i wasn't sure what actually froze in the bottle . was that moisture from the phase change ,or was it the CO2 .??
just something i thought was intersting :grinpimp: took about 15 min's to melt it on there special heater .
 
that reg might freeze up . why not just get this one from ultimate air ,support a mud vendor .shouldn't freeze up . i think there is a discount for mud members ? it says $43.00 unless you wanted an adjustable reg .just a thought :D

http://www.ultimate-air.com/products/uaexreg150.htm


Fast Eddy said:
Harbor Freight CO2 Regulator, $35: http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=94841

It is possible, if not advisable, to fill right from the tank without a regulator. It's way faster. :bounce2:

I got an out-of-date 20lb bottle from Craigslist for $40 and swapped it for a full new one for $50, so $90 total. I kinda with I had a 10 lb one instead, but they didn't want to swap sizes at the 2 welding supply places I tried. The only other size they had was 15lb.
Click to expand...
 
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