Kyle1292 Piston Valve Thread

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.
kyle1292
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Wed Nov 01, 2006 9:22 pm

hi, i was wondering how a piston valve works and if any1 had plans to make 1 becuase i want to put 1 in my next cannon. THX

[This is just a note to who ever may be 'confused'. The users 'kyle1292' posted 4 seperate posts regarding piston valves were combined.]
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noname
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Wed Nov 01, 2006 9:54 pm

Just look at the animations right <a href="http://forums.spudtech.com/topic.asp?TOPIC_ID=13265"> HERE.</a>
kyle1292
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Thu Nov 02, 2006 8:38 am

THX that hepled ALOT :P
kyle1292
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Thu Nov 02, 2006 7:04 pm

how do u make a piston for 1 1/2" pipe
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SpudStuff
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Thu Nov 02, 2006 7:12 pm

1" Cap with neopreme bolted on.
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judgment_arms
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Thu Nov 02, 2006 7:26 pm

Um, yeah… doesn’t work, just tried it, 1” cap doesn’t fit in 1.5” PVC.
I’m in the process of trying to figure out the same thing. I cut two disks of 1/2” birch cabinet grade plywood, bolted together and a neoprene fender washer I got at home-depot. I had to wrap it in duck-tape to make it work at all. But it still doesn’t work two well… say, does anybody know what I did wrong?
squeaks
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Thu Nov 02, 2006 7:30 pm

you could lathe a 2x4 down to 1.5" and screw on a sealing face. Plus you can make it as long as you want to decrease pilot volume.
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judgment_arms
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Thu Nov 02, 2006 7:36 pm

Yeah that’s a great idea. Except I don’t have a lathe and uh, would it not be hard too turn a 2x4, not to mention a waist? Or was that a joke?
squeaks
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Thu Nov 02, 2006 7:46 pm

first you would cut a bit off of the 2x4, or you could use a 2" dowel/post. Second, doesn't your local school have a lathe?
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judgment_arms
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Thu Nov 02, 2006 7:57 pm

Don’t know, I’m home-schooled.
Does the piston have to fit tight?
Infernal2
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Thu Nov 02, 2006 8:00 pm

Pretty much. You could also use the Making A Piston Video in the BCVIDS Sticky.
kyle1292
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Thu Nov 02, 2006 9:04 pm

hey i was wondering where i can get neoprene for my piston?
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SpudStuff
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Thu Nov 02, 2006 9:09 pm

Hardware stores, bike tubes, tupperware, ect...
kyle1292
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Thu Nov 02, 2006 9:33 pm

hi im making a piston for my pneumatic im building and i was wondering were i can get neoprene or if there is anything elso that would sela it well
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SpudStuff
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Thu Nov 02, 2006 9:36 pm

Any rubber surface. Use your imagination.
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