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Coax Barrel As

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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Coax Barrel As

Unread postAuthor: elitesniper » Wed Jan 30, 2008 7:07 pm

Hey guys witch barrel so you think is more ideal in a 2'' sch 40 chamber for a coax a sch 40 3/4 or a sch 40 1''? im going for the one with most power out of that chamber space so witch one do you think guys?
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Unread postAuthor: bigbob12345 » Wed Jan 30, 2008 7:12 pm

I would say 3/4 in but only if you extend it out of the chamber a lot. make it long but 1in would work fine too
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Unread postAuthor: elitesniper » Wed Jan 30, 2008 7:18 pm

so witch do you tihnk would be stronger?
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Unread postAuthor: bigbob12345 » Wed Jan 30, 2008 7:22 pm

3/4in if you made the barrel long but 1in if you dont want a very long barrel eighther will work.And if gonna use 3/4in use 3/4in cpvc so you can shoot paintballs.
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Unread postAuthor: elitesniper » Wed Jan 30, 2008 7:25 pm

nah i gotta use 3/4 sch40 b :idea: because im shooting 8g and 12g co2 cartridges
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Unread postAuthor: bigbob12345 » Wed Jan 30, 2008 7:29 pm

Okay that sounds good just make the barrel long or you will see a power decrease because 3/4in is Quite a small size for a 2in chamber but it will allow more volume in the chamber that useing 1in will.
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Unread postAuthor: elitesniper » Wed Jan 30, 2008 7:32 pm

about how much longer should i do it? the chamber is 38 inches long how long should the barrel be ? for the 3/4
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Unread postAuthor: bigbob12345 » Wed Jan 30, 2008 7:37 pm

Well 100ft long wouyld give a perfect 0.2:1 ratio but a 5ft long barrel would work just fine.
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Unread postAuthor: elitesniper » Wed Jan 30, 2008 7:46 pm

100ft??? :shock:
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Unread postAuthor: bigbob12345 » Wed Jan 30, 2008 7:52 pm

Yep 100ft but you dont at all need a barrel that long although I am very tempted to attempt this I wonder what kind of power Id get.
Great now all I need is 100 feet of 3/4in pvc :D
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