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mini bb piston gun

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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mini bb piston gun

Unread postAuthor: spudshot » Sat Jun 18, 2005 6:07 pm

just for a bit of fun i made a tiny coaxial bb gun using a sch 80 nipple and 2 1" threaded encaps for a chamber, the piston is a piece of rubber, epoxied to wood. i drilled a 1/4" hole in the 1/4" compression x 1/8" npt adapter so the brakeline would slide thru it, it works very well, the bumper is a piece of sheet rubber, left over from when i cut out the piston

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Unread postAuthor: saladtossser » Sat Jun 18, 2005 6:49 pm

Is it a cloud bbmg or a single shot gun :?:
holy crap that must pack a punch, isnt a piston "over kill" :?:
is there a pin hole in the piston to equalize :?:
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Unread postAuthor: spudshot » Sat Jun 18, 2005 7:22 pm

its a single shot gun, i dont think a piston is overkill
no theres no equalizer because the rubber isnt cut perfectly, theres a little notch out of the side that lets air thru
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Unread postAuthor: Cole » Sat Jun 18, 2005 8:22 pm

What is a coaxial piston?
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Unread postAuthor: spudshot » Sun Jun 19, 2005 5:25 am

coaxial means the barrel extends inside the chamber, i'm not gonna explain pistons to you because you should know that
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Unread postAuthor: saladtossser » Sun Jun 19, 2005 6:52 am

do you think it can work like a cloud? if you can fill it up.
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Unread postAuthor: spudshot » Mon Jun 20, 2005 7:57 am

i could, but that would mean tapping another hole in the bottom, and using a different screw on cap, really its too much work when i already have a good firing cloud
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