5 inch chamber

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
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mopherman
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how much fireing time do you think i can get out of a foot of 5 inch? ive got a marbleMG in the works and i want a shitload of air in that thing.
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Pete Zaria
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Not much. The pressure would drop significantly, very quickly.... you can't really use a "tank" for a bbmg, per say. You need a compressor or a CO2 setup to feed those air-hungry beasts.

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Pete Zaria.
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mopherman
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im only going for like a five shot burst, think it could pull that?
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Pete Zaria
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Yep. I'm sure you'd get that much out of it.

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Pete Zaria.
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mopherman
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i looked at brians mg and hes got less than 1 foot.
i want to make sure this thing will perforrm if i invest in big ass pipe(expencive)
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LGM
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5" PVC? That stuff is really hard to find.
But it fits 2 liter bottles so it's worth it.
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mopherman
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its gonna be the chamber not the barrel
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MrCrowley
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why not go 6"? More power,easier to find and could be cheaper.
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mopherman
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ill go with the biggest stuff i can find. also, dont expect this to be done anytime soon i can only work on my spare time and im held back by my parents schedual.
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pyromaniac
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whynot just go with like 3 peices of 3 inch for like 3 chambers made into one chamber. it would be eisier then finding 5 inch.
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deusXmachina
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How powerful is your compressor? If you are going for a compact cannon, you might be better off going with a foot or so of 4" sch80 and run it at higher pressures (same amount of air, greater energy density = same bang with smaller chamber).
5" PVC? That stuff is really hard to find.
But it fits 2 liter bottles so it's worth it.

Hmm....two liter bottle chambers are nifty too have you looked at those designs?
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mopherman
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my firts gun had a 2liter as a chamber. i dont have a compresser.
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pyromaniac
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Just save for like an 80 buck compressor.
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subterranean
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look at how he made his bbmg portable. this is really the only effective way to go about it.

http://www.spudfiles.com/forums/viewtopic.php?t=6685&
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benstern
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IT WILL NEVER WORK!!!!
he said: MARBLE machine gun!
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