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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PVC Arsenal 17
- Staff Sergeant 3

- Posts: 1762
- Joined: Mon Mar 27, 2006 4:18 pm
- Location: United States
Sun Jul 22, 2007 11:26 am
Usually people build ballvalve cannons as their first pneumatic. This is probably my 8th completed cannon and my first ballvalve. I built it just for fun and I'm actually pretty happy with it.
Specs:
-1 1/2" x 10" chamber
-1/2" x 24" barrel
-Schrader valve
-3 minute paintjob
Please don't suggest upgrading to a sprinkler valve. I simply won't. I wanted a ball valve cannon and that's what I have.
Also, would it be safe to use this even if I happened to forget primer on the pipe connecting the bushing to the ballvalve?
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mopherman
- Corporal 3

- Posts: 788
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Sun Jul 22, 2007 11:39 am
nice looking ball valve cannon. dont hold it by the valve when you use it.
searching for a modern day savior from another place,inclined toward charity,everyone's begging for an answer,without regard to validity,the searching never ends,it goes on and on for eternity
-Bad religion
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spud yeti
- Sergeant

- Posts: 1030
- Joined: Tue May 08, 2007 1:41 pm
- Location: Cape town south africa
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Contact:
Sun Jul 22, 2007 11:53 am
wow, you could put a sprinkler val.... Only kidding! Looks like a blast: nice and simple. Getting back to the basics. Nice work.
What are you using as projectiles?
really good quote/phrase here
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noob of noobs
- Specialist 3

- Posts: 320
- Joined: Tue Jun 12, 2007 8:04 pm
- Location: Illinois, Skokie
Sun Jul 22, 2007 12:59 pm
If not a sprinkler valve, at least get a better ball valve! The metal ones with the big handels should give you faster opening control, and you can easily spring load them!

As to your primer situation, I wouldn't trust it on holding, but my knowledge of working without primer is non-existent.

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frankrede
- Sergeant Major 2

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Sun Jul 22, 2007 1:55 pm
I have had a cannon never blow(minus a cracked threaded fitting) and I didn't use primer on it, and it was 2" pipe.
so you should be fine at 90 psi.
Current project: Afghanistan deployment