Pneumatic CO2 T-Shirt Cannon

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.
helluvamatt
Private
Private
Posts: 7
Joined: Sun Sep 23, 2007 6:54 pm

Mon Oct 08, 2007 9:41 am

I have already pressurized the chamber to 100 PSI. It held just fine. Just how do you know those are DWV fittings?
User avatar
ShowNoMercy
Sergeant
Sergeant
Posts: 1094
Joined: Mon Mar 19, 2007 8:08 am
Location: Jersey Bitches!

Mon Oct 08, 2007 10:05 am

They lack the depth in sockets that regular pipe would have. Therefore the thickness of the pipe is not your concern but rather how much of the pipe fits into fittings, consequently making it weaker, although I guess if it did blow up it would just shoot apart rather than explode.
Jesus saves, no need to pray
The gates of pearl have turned to gold
It seems you've lost your way
User avatar
Pete Zaria
Corporal 5
Corporal 5
Posts: 954
Joined: Fri Mar 31, 2006 6:04 pm
Location: Near Seattle, WA

Mon Oct 08, 2007 10:07 am

You can tell from the short socket depths and the bell reducers (as opposed to couplers and bushings).
DWV pipe is safe for combustion launchers seeing as they generate a max of about 80psi and only for a split second, but we STRONGLY recommend avoiding DWV pipe for pneumatics. I personally would not feel safe holding a DWV chamber pressurized to 100psi.

Peace,
Pete Zaria.
helluvamatt
Private
Private
Posts: 7
Joined: Sun Sep 23, 2007 6:54 pm

Fri Oct 12, 2007 7:11 pm

Okay, I see what you all are talking about. Thank you. I pressurized the gun to 100 PSI today and shot a T-shirt across the street. Problem is, I am tied to my huge compressor by a 50 ft hose. Any ideas for CO2 portability?
User avatar
noname
First Sergeant 4
First Sergeant 4
Posts: 2698
Joined: Mon Apr 10, 2006 9:19 pm
Location: Bay Area, CA

Sat Oct 13, 2007 4:26 pm

You just endangered you life, alon with eveyrone else in a 50 foot radius. CUT OFF THE DWV REDUCERS!
User avatar
veginator
Specialist
Specialist
Posts: 186
Joined: Tue Apr 10, 2007 4:02 pm

Sat Oct 13, 2007 4:35 pm

Seriously cut off the DWV I accidentaly made a DWV chamber for my pneumatic and after a few days at my friends house the reducer bushing cracked.
Post Reply