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12g CO2 gun

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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12g CO2 gun

Unread postAuthor: knappengineering » Fri Dec 07, 2007 10:51 pm

I am planning on making my remote control robot shoot something, so I came up with the idea of using those 12g CO2 inflators like the one shown here: http://www.genuineinnovations.com/bikep ... rodid=1003
I thought that i could just screw on a schrader with the inside taken out (since they're removable)so its just a threaded metal tube that I can attach a barrel and magazine to. I was thinking of just using small copper tubing for an airsoft bb barrel. Then, since it has a trigger, I can just hook up a servo to that to fire. What do you guys think? Would a cloud be better? Thanks. 8)
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Unread postAuthor: POLAND_SPUD » Fri Dec 07, 2007 11:26 pm

those co2 inflators look good. Do they have a built-in regulator ? anyone knows how high pressure is possible with one of these?
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Unread postAuthor: knappengineering » Fri Dec 07, 2007 11:35 pm

I'm almost positive that they don't have built in regulators, but I'm not sure about how much pressure is in one of them.
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Unread postAuthor: grumpy » Sat Dec 08, 2007 9:27 am

nope they do not have built in regs, also their flow rate is a little slow. this is to allow the liquid co2 to expand to a gas before going into the tire. they still work good for charging a cannon with a schraeder valve. it may be possible to modify it for higher flow but i'm not sure about that.
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Unread postAuthor: pizlo » Sat Dec 08, 2007 11:06 am

in a medium sized gun how many shots roughly so you think a 12 gram could fire, using a efficient valve?
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Unread postAuthor: grumpy » Sat Dec 08, 2007 3:50 pm

without knowing how many c.i. your pressure chamber is there is no way to tell, unless you have quick changer with an on/off valve. check this out it will help you figure it all out. http://www.spudfiles.com/spud_wiki/inde ... _cartridge
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