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safe effective air supply

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Unread postAuthor: gotbass7 » Fri May 25, 2007 11:00 pm

well how many pumps per shot would you say?
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Unread postAuthor: hi » Fri May 25, 2007 11:17 pm

the more pressure the more pumps. the bigger the chamber the more pumps to reach that pressure.

lets just say that it is a 2'' chmaber that is 2 feet long and you want to got to 100 psi, maybe 30 pumps. some pumps pump more then other pumps because of the way the pump is set up and the size of the pump.
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Unread postAuthor: gotbass7 » Fri May 25, 2007 11:30 pm

ok so its not like i have to pump 1000 times
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Unread postAuthor: GinsuGuy585 » Fri May 25, 2007 11:58 pm

If you want to do co2 safely use an anti-siphon tank. They are specifically designed to keep liquid from coming out. (ask the paintball store about an anti-siphon.

Also someone recently found a co2 regulator that is meant to run air tools, it stops at 120psi and you can choose anywhere from 0-120 by turning the regulator. (it is $100 but fully safe)

Propane is also safe and dosen't loose pressure until it is completely drained. In most moderate climates it will self regulate to ~100psi without an expensive regulator.
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Unread postAuthor: gotbass7 » Sat May 26, 2007 12:08 am

how much is propane? because if im gonna use co2 im using what i have now but if im gonna buy something it probably wont be co2
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Unread postAuthor: Killjoy » Sat May 26, 2007 2:26 am

Also someone recently found a co2 regulator that is meant to run air tools, it stops at 120psi and you can choose anywhere from 0-120 by turning the regulator. (it is $100 but fully safe)

Actually they go to about 150 or so. The gauge stops reading at 120 cause thats generally the max air pressure for air tools. It also uses paintball tanks which i assume you can get easily and get filled.
This could easily work for you, specially since it won't go over 150 psi, which almost all pressure rated pipe can handle (except the much larger sizes).
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Unread postAuthor: gotbass7 » Sat May 26, 2007 2:30 am

well im sure ill find what suits me. but this means that i wont have the danger of blowing up. thank you everone for helping
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Unread postAuthor: Solar » Wed May 30, 2007 1:08 am

Buy a paintball constant air tank and a secondary regulator that is adjustab;e between 0-300psi and you should be fine. ALWAYS have a pressure relief valve on your pressure chamber in case something goes wrong and the regulator doesn't fail safe like has happened to me with smart parts regs.
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Unread postAuthor: chaos » Wed May 30, 2007 1:50 am

gotbass7 wrote:how much is propane? because if im gonna use co2 im using what i have now but if im gonna buy something it probably wont be co2


if your thinking about propane/bbq gas, have a look at this thread

http://www.spudfiles.com/forums/pnuemat ... t7934.html

i used it and i didn't like the smell and weak power.
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Unread postAuthor: Insomniac » Wed May 30, 2007 5:56 am

Co2 IS safe IF you use a proper, store bought regulator. When the paintball guy said it was unsafe in a hommade gun, I think he was talking about the maximum pressures Co2 can get to. So long as you use a regulator and have a safety pop off or two, then there is no need to worry. Just remember that Co2 comes out cold and pvc is weakened by the cold.
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Unread postAuthor: iknowmy3tables » Wed May 30, 2007 7:35 am

well maybe if your mom isn't smart enough to understand that if you regulate co2 its as safe as normal air than you mom isn't smart enough to know about compressed nitrogen which is really at 3000psi but the regulator gets it down to a safe presure of (0-100psi)
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Unread postAuthor: gotbass7 » Wed May 30, 2007 9:15 am

well see i was buying a regulator at the store and he still said the stuff.
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Unread postAuthor: Insomniac » Thu May 31, 2007 1:30 am

Hmm. You should question him on why he thinks its dangerous. Ask him if it would still be dangerous if you use pressure rated pipe, keep the regulator below that rating and install pop-off valves. It would be safe but your mum would probably trust the paintball guy more than she would trust a bunch of people from all over the world who she's never met.
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Unread postAuthor: flamerz14 » Thu May 31, 2007 6:49 am

yeah bike pumps are safe...any other ways to fill up a chamber other than the pump (no pressurised gas please cos i'm livin in a hard-to-get-spud-stuff area.
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Unread postAuthor: CpTn_lAw » Thu May 31, 2007 7:21 am

in the end you end up better with buying a paintball marker...
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