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Kyle1292 Piston Valve Thread

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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Kyle1292 Piston Valve Thread

Unread postAuthor: kyle1292 » 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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Unread postAuthor: noname » 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>
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Unread postAuthor: kyle1292 » Thu Nov 02, 2006 8:38 am

THX that hepled ALOT :P
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HOW to make a piston

Unread postAuthor: kyle1292 » Thu Nov 02, 2006 7:04 pm

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

1" Cap with neopreme bolted on.
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Unread postAuthor: judgment_arms » 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?
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Unread postAuthor: squeaks » 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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Unread postAuthor: judgment_arms » 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?
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Unread postAuthor: squeaks » 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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Unread postAuthor: judgment_arms » Thu Nov 02, 2006 7:57 pm

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

Pretty much. You could also use the Making A Piston Video in the BCVIDS Sticky.
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piston materials

Unread postAuthor: kyle1292 » Thu Nov 02, 2006 9:04 pm

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

Hardware stores, bike tubes, tupperware, ect...
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Piston construction

Unread postAuthor: kyle1292 » 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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Unread postAuthor: SpudStuff » Thu Nov 02, 2006 9:36 pm

Any rubber surface. Use your imagination.
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