Compact Piston Valve

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
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clemsonguy1125
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On a valve like this, does the piston slide in the bushing, or is the bushing cut down and the piston slides in socket itself? My cap piston failed so I have the rest of the gun with screw holes in the tee, I want to covert it to something like this.
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Failed cap piston
Failed cap piston
Mauler Valve from launch potatoes
Mauler Valve from launch potatoes
mauler02.JPG (12.61 KiB) Viewed 3067 times
This is Dan003400 gun, or this
This is Dan003400 gun, or this
dans piston.jpg (23.21 KiB) Viewed 3060 times
Last edited by clemsonguy1125 on Sat Apr 24, 2010 8:05 pm, edited 1 time in total.
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Gun Freak
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You already gave up? Yeah I'm pretty sure the Mauler is a compact. It has slices of bushings in it so there are no adapters sticking out.
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clemsonguy1125
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Any idea about the new one I just uploaded, Its Dan003400 gun, I didnt give up, I decided it wouldnt work with the tools I have, and it had terrible flow when I tested it anyway
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Gun Freak
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the one you just uploaded just looks like a normal compact piston valved launcher. Look around the showcase some more or use the search to find some more examples and go at it again. My parts are all ordered, pistons made, and pipe bought. Wish me luck!
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clemsonguy1125
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I did but only gippeto has made a cap piston as far as I can tell, plus on your topic people said some worked in different ways, I like dans the best but about normal compact piston valves, do they tipically slide in the bushing, or socket
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Gun Freak
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They slide on the pipe! not inside the bushing.
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clemsonguy1125
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What pipe! Mines not like yours with a adapter and a piece of pipe.
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Gun Freak
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Tthe "guide" in the diagram you posted by Gipetto.
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clemsonguy1125
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But most compact valves dont work like that, Im wondering how dans works though
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Gun Freak
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The same way as Gipetto's.
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clemsonguy1125
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Don't think so, I've seen a buch that show the piston which is a cap
Last edited by clemsonguy1125 on Sun Apr 25, 2010 11:33 am, edited 1 time in total.
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Gun Freak
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Ok, the piston in Gipetto's design is a cap!
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clemsonguy1125
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No I ment to say not a cap, gippeto is the only person I ever seen use a cap for a piston
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Technician1002
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My Mouse Musket and my Dragon both used PVC caps as pistons. An issue with them is longevity. They don't last long before they crack and leak.
Image
This is the 4th piston that cracked in the Mouse Musket. The other 3 cracked in the center of the piston face. The piston is a 1 inch PVC pipe cap.
For this reason I have given up on using PVC pipe caps for pistons.
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clemsonguy1125
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I was thinking of casting a bondo piston in a plug and letting it slide in the bushing, would this work well enough of would it crack
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