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SPMP (Scrap Parts Mini Pneumatic)

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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SPMP (Scrap Parts Mini Pneumatic)

Unread postAuthor: TfAv1228 » Sun Feb 26, 2006 11:46 pm

The only thing I had to buy for this gun was the ball vavle. My chamber is a 12" x 1-1/2" sch40 and my barrel is 7-1/2" x 1/2" sch(something it fits in the 1/2" sch40 fittings and fits a paintball). The U is made of a 1" 90 degree elbow and inch of 1" sch40 and a 1/2" 90 degree elbow. I pressurize it using a shrader valve (I got it at Napa ask for an Industrial Tank Valve). This think packs a punch at 50 psi shooting semi frozen paintballs. I brought it up to 70 psi and then my bike pump kills itself meaning it won't go past that.

Pics below

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Any comments or questions feel free.
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Unread postAuthor: lordfin » Sun Mar 26, 2006 10:37 am

wow thats very mini
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Unread postAuthor: experament_u2 » Wed Dec 13, 2006 12:04 am

thats a nice gun kool and compact
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Unread postAuthor: King_TaTer » Wed Dec 13, 2006 5:29 pm

well anyway back on topic I would have to say that is pretty kool. oh and by the way your bike pump must be crappy because mine goes up to 130psi and it was like $5... lol :lol:
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Unread postAuthor: PVC Arsenal 17 » Wed Dec 13, 2006 5:42 pm

no, not back on topic... this one's dead

....though I am curious how he got the street elbow into the pipe.

(anyone notice how I alway use those "......" a lot?)
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Unread postAuthor: spud-tom » Fri Dec 15, 2006 9:44 pm

nice gun, lot of people say to use either salenoid or piston valves. I stick with the ball valves... they are cheap and pretty fast opening when small.
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Unread postAuthor: SpudStuff » Fri Dec 15, 2006 10:13 pm

You obviously haven't used a piston valve then. They open many times faster. A ball valve almost always has a reduced port.
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Unread postAuthor: Dan003400 » Mon Dec 18, 2006 12:38 am

i like this because it is like not big lol
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