SGA Golf ball Gun (2" Piston), 400yards!

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
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MrCrowley
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Sat Jan 12, 2008 11:07 pm

Yeah I did try water, wasn't all that bad actually recoil wise, screwed my piston up. I think it did something to the lube and it stopped working, took it out and it was fine physically.
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elitesniper
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Sat Jan 12, 2008 11:17 pm

probabley dryed up the lube what kind of lube are you using?
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MrCrowley
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Sun Jan 13, 2008 12:46 am

Plumbers lube.
bennyt92
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Sun Jan 13, 2008 7:14 am

thats sooo awsome man
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frogy
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Sun Jan 20, 2008 10:21 pm

If you can get some Lithium Soap\Grease or some good Silicon based paintball gun lube you should be able to keep this thing in perfect working condition...

My last BST had a removable end cap, do I could relube\replace pistons if they stopped sealing or became sticky... When I first Installed the piston I used Smart Parts "Sleek" Silicon lube, and it hasn't dried out since then (years ago)...


I love the gun though... I need some more golf ball barrels :)
-FrOgY-

I wish people would stop needing a better signature!
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bigbob12345
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Sun Jan 20, 2008 10:27 pm

Wow I love the new paint job.
nabu92
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Thu Jan 31, 2008 7:50 pm

When you open the ball valve, doesn't air from the chamber leak out of there? And does air go around the back of the piston to get into the chamber? I just looked at the animation and I'm a little confused. I'm plannning on building a similar gun tormorrow. :)[/youtube]
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elitesniper
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Thu Jan 31, 2008 7:56 pm

The air leaks out of the pilot chamber yes, thats what makes the piston move back.
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MrCrowley
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Thu Jan 31, 2008 8:14 pm

Yeah, i'd hold off on the piston valve until you understand them a bit more, it sucks wasting $30 of PVC fittings.

What animation did you look at? This <A HREF="http://www.spudfiles.com/forums/how-to- ... ml">one</a> or this <A HREF="http://www.spudfiles.com/forums/piston- ... ml">one</a>?
nabu92
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Thu Jan 31, 2008 9:52 pm

I looked at the 1st one before. I just looked at the 2nd one and that answered all of my questions. Thanks, I've been looking for that for a few days now.
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daberno123
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Thu Jan 31, 2008 9:59 pm

Well now that this topic has been pulled up again i'd like to say how much i really like this gun. I especially like the configuration of the stock and the valve placement. I might build a similar one with a 2.5" porting piston to shoot tennis balls instead of gof balls.

Great gun :)
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MrCrowley
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Thu Jan 31, 2008 11:38 pm

Thanks, it brings me the most joy out of all my cannons. :)
brother361
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Fri Feb 29, 2008 3:39 pm

hey i got i question about the end cap near your piston is that drilled out and a brushing screwed in or what is it
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MrCrowley
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Fri Feb 29, 2008 3:48 pm

No, it's glued to a piece of pipe that's also glued into the tee, this is what the piston moves in.
brother361
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Fri Feb 29, 2008 4:32 pm

oh ok u made it
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