CO2 tanks molly or aluminum

[Foahr Decatur]

Would there be an advantage to useing an aluminum tank over a molly one. aluminum has a higher thermocondutive abillty then molly. so would useing the aluminum remove the cold from the tank faster and help keep it in a gas state?

Also Aluminum tanks seem to be larger then molly. So would this extra space in the aluminum take give an advantage to the liquid CO2 to expand? Or vice a versa?

[Koosh]

There really won't be much of a difference... The aluminum tanks are larger because they have to be thicker... the Chrome-molly is alot heavier and more durable, so the tank walls don't need to be as thick... I mean, your getting 20 oz (or whatever) of CO2 no matter what the tank is made out of.

(I don't know for sure if any of the above is true... it just makes sense to me, so I'll go with it)

If it were me, I would go with aluminum simply because it will be lighter then Cr-molley... and my mag weighs a metric ton already.

[PRPB]

The one thing that is better about chrome molly tanks is that they don't have to be tested. Aluminum tanks have to be tested every five years.

BTW does anyone know where I can get a 20oz chrime molly tank?

[Spaceman613]

ANY tank over 2 inches in diameter needs to be tested.

Steel and aluminum both

[PRPB]

Well it says right on the chrome molly tanks that they never have to be retested.

[Spaceman613]

show a pic... what size is it? if its over 2" in diamter it has to be tested.

[Torbo]

it really isnt worth it to get it tested anyway, imo. I only used co2 for like 2 years anyway. And co2 tanks are so cheap, it would cost almost as much to get it tested.

[PRPB]

The diameter of the tank is 3 1/4. This one is 16oz chrome moly tank.

pic one

[Automaggin2]

I usually use aluminumnumnumnum because its lighter and i dont like the little stubby round backs of the mollys

[Spaceman613]

First time i have ever seen that. Id still check the locals. Most places dont know that under 2" doesnt need tested, so even if the DOT specs changed to allow your tank to not be tested, they may not believe it.

Most places dont know the rules anyway. because there are so many, they change, some things are "grandfathered" in and some arnt. its confusing as heck, and to do it right you have to be completely on your game.

Oh, and for the person that doesnt think its worth hydroing... I get my hydro for free, and you CANT buy some of the older tanks anymore. Like the 40ouncers I used to have (sold all 3 of them). even my 24 ounces are hard to find.

[Torbo]

about the hydroing, that was just my experiance. A new 20 oz is 20$, and it costs 10 to get it hydroed. And if you used such a tank for 5 years, you may as well buy a new one. Obviously, for hard to find tanks, having them hydroed would make sense.

[Foahr Decatur]

Some chrome molly tanks that have a code stamed on them also do not have to be hydoed ever (probly the 2 inch kind) but there is that stamp.

Really what i was asking if there was an advangae to useing Aluminum tanks over molly becouse Aluminum has a greater cappacy to conduct heat. I figured that if the Aluminum could get the liquid to heat up a lil faster it would be an advantage to useing it over molly.

[Butterfingers]

For containment and storage purposes they work equally as well.

It is very odd that that tank says it never needs to be retested law requires them to be tested every 5 years.

For rapid fire choose aluminum. Aluminum absorbs heat better than steel so it will be more able to take heat from the environment and warm the tank under rapid fire. Steel tanks are more insulatave and tend to insulate the co2 inside preventing warming.