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Mega Build (3" ported valve)

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: locksmith » Mon Apr 09, 2007 11:06 am

very nice job i do believe a piston gun will be my next project just finished my bbmg
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Unread postAuthor: Velocity » Mon Apr 09, 2007 6:31 pm

So did you test this valve today? How did it go?
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Unread postAuthor: Zorrowannabe9 » Mon Apr 09, 2007 9:09 pm

I did test it, it holds air, but I am in the process of modifying the exhaust system (the 1/8" opening wasnt enough.) I also had to rebuild the piston, there were structural problems, but that is fixed now. Not giving up on it, its close.
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Unread postAuthor: iPaintball » Mon Apr 09, 2007 10:52 pm

Make a REALLY big tennis ball cannon!
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Unread postAuthor: Velocity » Tue Apr 10, 2007 10:35 pm

Well, this valve has inspired me to build another 3" porting valve. My other one was nice in the power department, but in terms of aesthetics... meh...

My new valve will be shorter in appearance, more efficient, and will not require a big SCH 80 threaded plug to be unscrewed in order to service the piston (a PITA to do and it ate Teflon tape like no other...)

This one should only cost me about $40, compared to the $100+ I spent on the other valve... after all, this new one will only use 3-4 PVC fittings.

I don't know why I am rambling about this... just excited I guess :P .

Back on topic...
I can't wait to see your valve on a cannon! I really like the look of the rounded cap for the back end; it looks a lot smoother than the flat PVC plugs which are usually used.
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Unread postAuthor: Zorrowannabe9 » Tue Apr 10, 2007 11:59 pm

Well glad to hear I inspired you, I look foreward to your new valve. Ill post a video once mine is working properly.
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Unread postAuthor: Kenny_McCormic » Wed Apr 11, 2007 3:21 pm

wow thats like joels mega valve that was never sold. is it chamber or barrel sealing?
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Unread postAuthor: Zorrowannabe9 » Wed Apr 11, 2007 8:13 pm

barrel sealing valve
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Unread postAuthor: hi » Tue Apr 17, 2007 2:22 am

did you ever get it to work?
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Unread postAuthor: Zorrowannabe9 » Tue Apr 17, 2007 8:31 pm

the rubber cap on the piston bubbled out and jammed on the second test firing...So that needs to be replaced, but I'm feeling lazy,
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Unread postAuthor: VH_man » Tue Apr 17, 2007 8:54 pm

Wow. It didnt look that great untill i went down and looked at some 3 inch PVC pipe.... when it works you should build another one and make a BETTER SWAT gun......... im gonna try making a 3 inch porting valve...... they sound powerful.
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Unread postAuthor: Specialist » Tue Apr 17, 2007 9:03 pm

nah, the SWAT gun is increadable! barrels dont get much longer than that buddy.
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Unread postAuthor: VH_man » Tue Apr 17, 2007 9:11 pm

Yeah, but the SWAT's valve is 2inch porting, if i remember correctly. and imagine that with TWO Valves....... actuated by a Mauler actuated by a 3/4 inch QEV.............
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Unread postAuthor: spudthug » Wed Apr 18, 2007 5:36 am

why would u buy a mauler to port 2 4 inch piston valves....use a qev or even a sprinkler
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4" piston valved cannon-half done..( i spilt my cement...)

Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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Unread postAuthor: VH_man » Wed Apr 18, 2007 5:37 am

Imagine how fast it would actuate...............
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