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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Tipsypyro
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Sun Feb 15, 2015 6:27 pm
I know ahead of time that this is probably a dumb question, but I have been raking through the archived posts for the last few nights hoping to find what I need and it may just be that I am getting kinda dense.
I built a 2.5" launcher with a 2" Galcon diaphragm valve and used a 3/4" Orbit sprinkler valve to trigger it. It works awesome but after a while the weight of this thing hanging off the side and a couple bumps on door frames developed a leak on the threads into the lid of the Galcon. I also had a small coaxial I needed to pilot faster so I bought 2 0.5" QEVs online. The little black box valves with no spring or anything. For some reason, I can't seem to wrap my head around a way to use them the same way as the sprinkler. Do I need to vent the piston and add a spring on the pilot port? I know it's probably right in front of me and if so, I apologize for wasting the space.
As within, so without. As above, so below.
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jackssmirkingrevenge
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Tue Feb 17, 2015 9:10 am
The QEV should have three ports labelled R, A and P
R - barrel, A - chamber and P - pilot
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Tipsypyro
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Tue Feb 17, 2015 1:18 pm
Yes, it does. My question is how do I equalize the pilot area?
Ok, I got it working by drilling the piston and putting in a spring. I will post some aftermath as soon as it warms up a little.
As within, so without. As above, so below.
