SpudFiles

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.]

Just look at the animations right <a href="http://forums.spudtech.com/topic.asp?TOPIC_ID=13265"> HERE.</a>

THX that hepled ALOT

how do u make a piston for 1 1/2" pipe

1" Cap with neopreme bolted on.

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?

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.

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?

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?

Don’t know, I’m home-schooled.
Does the piston have to fit tight?

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

hey i was wondering where i can get neoprene for my piston?

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

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

Any rubber surface. Use your imagination.