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22mm piston

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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22mm piston

Unread postAuthor: qwerty » Fri Oct 30, 2009 5:15 am

On my 22mm coaxail i have hot glue piston it's okay, but opens very slowly. I don't have enough epoxy to make an epoxy piston so does anyone have an idea of what i could make it from?

I'll put it up in the showcase soon and with a sneek peek of my 22mm piston in a tee :)
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Unread postAuthor: psycix » Fri Oct 30, 2009 6:35 am

-Tighter piston fit
-Lighter piston
-Better pilot valve

When casting an epoxy piston it shouldnt be solid epoxy. You should look into making it hollow or with a foam core. Its lighter, and saves you epoxy.
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Unread postAuthor: qwerty » Fri Oct 30, 2009 6:38 am

Ok thanks i'll keep all of those things in mind.
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Unread postAuthor: AngryChauncey » Sun Nov 01, 2009 12:14 am

Bondo is good too, and you can make it hollow/foam core as well.
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Unread postAuthor: cannon monkey » Sun Nov 01, 2009 12:28 am

i used a big wood stick found outside :D cut it down and sand to size
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