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My new Coaxial golfball gun

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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Unread postAuthor: LikimysCrotchus5 » Tue Sep 18, 2007 9:35 pm

What does pvc dwv mean cause on one of my cannon's fittings it says dwv and pvc. And im pretty sure its presure rated.
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Unread postAuthor: noname » Tue Sep 18, 2007 9:37 pm

It's almost definitely not pressure rated. DWV fittings have a very short socket depth, and are not made to hold pressure. They are much more liable to blow off than any normal NSF-pw fittings are.
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Unread postAuthor: trae08 » Tue Sep 18, 2007 9:54 pm

ive got dwv fittings that are pressure rated. usually if its got a pressure rating i use it. but i have used dwv fittings before with some 3 inch cell core pipe on one of my first guns. check it out

http://www.spudfiles.com/forums/the-big-bang-t9591.html
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Unread postAuthor: DeathBlade » Sat Sep 22, 2007 9:47 pm

I got out my old 1.5"/3" piston gun today, as I was waiting for the sealant on my golfball gun to dry on the new 1/2" pilot valve. After the sealant dried I jumped in my jeep and drove out into the country side and aired up my golfball gun to 65psi I took a cheap hollow plastic training golfball and filled it with red chaulk and launch it down the road with that shot I got 904 yards, (down worry there were no cars, this sections of road is has been closed for years it takes a jeep or a quad to get over some of the holes in the road) the one part I forgot about was a cross wind, the ball deviated almost 70 feet.

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Unread postAuthor: noname » Sat Sep 22, 2007 9:49 pm

With normal pressures, over 1/2 mile with a shitty DWV launcher with a tiny barrel is totally unrealistic.
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Unread postAuthor: turbohacker » Sat Sep 22, 2007 10:45 pm

Is that a compressor mounted on your jeep? Or does it somehow work of of the compression of the engine?
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Unread postAuthor: DeathBlade » Sun Sep 23, 2007 6:12 pm

How are you saying I got half a mile? it was just over 400 yards. Ya, its a old mopar RV2 AC compressor that I converted to pump air, I added a kilby combo pulley to my alternator the combo has the 6 grove serpintine and 3/8" Vbelt pulleys the Vbelt runs the compressor, the old fire extinguisher is just a pressure tank to store air, I would get the my coaxial to 65 psi in just under 13seconds. I mainly made it to run airtools when I go offroad but charging spudguns is a nice bonus. :D
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Unread postAuthor: noname » Mon Sep 24, 2007 9:59 pm

[quote="DeathBlade]with that shot I got 904 yards[/quote]

Hmmmm
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Unread postAuthor: DeathBlade » Tue Sep 25, 2007 10:40 am

noname wrote:[quote="DeathBlade]with that shot I got 904 yards[/quote]

Hmmmm[/quote]


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Unread postAuthor: acoop101 » Tue Sep 25, 2007 3:43 pm

Can anyone tell me a place for 1.5 inch SDR 21 pipe and the accompanied schedule 80 2 inch pipe i need for reenforcement? Is 3 bucks a foot a reasonable price which is what bcarms is selling it for?
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Unread postAuthor: williamfeldmann » Tue Sep 25, 2007 4:03 pm

I just got a 20' stick of sdr 21 for 13.70. Take into account the 2 inch sch 80 and you are looking at mid $2 for a sleeved GB barrel.

If you plan on making very many GB barrels it is definetly cheaper to look up a plumbing supply wholesaler in the Yellow book or directory. If you want one nice barrel or something special like rifled, etc. just buy one cause you can't get short lengths of either pipe very easy.
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