[DuckTape Dude]

So I've built several constant air launchers that have been very successful, but now I want to try my hand at a 12g launcher. First, i have a questions

Whats the pressure of a standard 12g

(if anybody has a good design please share it/them!)



P.S. I want to convert my PVC launcher to have a metal air chamber. Whats the best metal piping to use and where can i get it?

Thanks for your help!!!!

[BlackAngelSS]

i make a good 12 gram panzerfaust. basically a 12 gram adapter,1/2 to 3/4 inch pipe adapter,3inch x 3/4 inch pipe nipple, 3/4 inch valve,3/4 inch x2 inch nipple, and a 2inch pvc bushing with a 3/4 in threaded hole.

the bushing will fit into a 2inch pipe for the barrel. check the weapons section of my forums for pics

i think the pressure of a co2 12 gram is simmilar to a reg co2 bottle. but since you put it into the pipe the pressure goes down alot. ive never heard of one bursting.

[DuckTape Dude]

Very Nice, thank you Black Angel


I still have the question about metal air chambers. Please help!

[BlackAngelSS]

a small fire extigusher body makes a good air chamber. ive made an air chamber out of 2 inch black pipe but its very heavy.

[DuckTape Dude]

What do you know about aluminum?

[BlackAngelSS]

not alot. but i woudnt use it for an airchamber

[jvtech]

Originally Posted by DuckTape Dude

P.S. I want to convert my PVC launcher to have a metal air chamber. Whats the best metal piping to use and where can i get it?

I know this guy that had a LAW that had a PVC airchamber which he had a master plumber convert the air chamber to 2" copper pipe. He pressure tested it. Weight wise it's the same as the Schedule 40 pvc.

[jvtech]

Originally Posted by BlackAngelSS

not alot. but i woudnt use it for an airchamber

Most fire extinguisher are aluminum. My LAW uses an aluminum fire extinguisher as the air chamber.

[DuckTape Dude]

very, very original (and cheaper than aluminum too!) Thanks for your input!

[Pyrate Jim]

There's not a whole lot of air in a 12g....
It will fill a balloon to about 7" diameter.

[BlackAngelSS]

Originally Posted by jvtech

Most fire extinguisher are aluminum. My LAW uses an aluminum fire extinguisher as the air chamber.

yes but those are manufactured to hold pressure. so its an easy way to go and safe. Still use a pop off valve though and a regulator on anything you make. exept 12 grams

[paintballzzer13]

hah

[jvtech]

Originally Posted by BlackAngelSS

yes but those are manufactured to hold pressure. so its an easy way to go and safe. Still use a pop off valve though and a regulator on anything you make. exept 12 grams

Of course always use a regulator and Safety Popoff valve when dealing with HPA or CO2.