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coaxial airsoft gun suggestions

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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Unread postAuthor: ckman » Sun Jan 18, 2009 5:39 pm

ok well yes i do hate my sisters. the piston is hot glue but the sealing faceis the rubber part of the syringe. and the tape which i tried works but now the sealing face sucks. I am going to put it on a stock with a laser dot scope and get a shock pump so i can take it up to higher pressures.


ok so basically i think i just need a new sealing face like some bike rubber or something.
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Unread postAuthor: POLAND_SPUD » Sun Jan 18, 2009 5:40 pm

there are people who think I'm stupid just because of the way I look
LOL I look more less like BtB (no offence BtB) and some people are a little bit scared when they see me... but hey that's acctually a good thing when they consider you to be more stupid than you really are.... it would be bad if it was the other way round :wink:

I agree that spudgunning is closely conected to science... when I was at school I liked science a lot... the bad thing is that here in poland there are almost no projects and no experiments during science lessons... I was lucky enough to have a teacher who really loved science and he conducted some experiments... (despite the fact that all the equipment we had in the science classroom was either 20 years old or broken)
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Unread postAuthor: Sticky_Tape » Sun Jan 18, 2009 5:48 pm

ckman wrote:I am going to put it on a stock with a laser dot scope and get a shock pump so i can take it up to higher pressures.

So are you trying to put the bb's under peoples skin? Harsh. Maybe you should just get a small low pressure frame pump from walmart so it will take alot less time to pump up and not put bb's under your friends skin. Shock pumps are very low flow BTW.
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You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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Unread postAuthor: ckman » Sun Jan 18, 2009 5:50 pm

yeah i know. hmm for my next gun i think im gonna make a concealed pen gun sorta thing. :D
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Unread postAuthor: Sticky_Tape » Sun Jan 18, 2009 6:00 pm

Maybe you should get this co-axial working before you attempt the tini tiny pengun I hear those are a bit more difficult.
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You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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Unread postAuthor: iisthemuffin » Sun Jan 18, 2009 9:51 pm

If i were you i would just go to lowes, or the hardware store you go to, and buy a rubber washer of the right size.

Its very tough and thick enough to resist tears of most kinds. I use it on a 2 inch piston. Seals everytime and has held up for months.
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Poop.
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Unread postAuthor: roboman » Mon Jan 19, 2009 1:42 am

Make your piston out of epoxy. Hot glue is too rubbery, and has too much friction to be used as an effective piston.
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Unread postAuthor: ckman » Mon Jan 19, 2009 2:27 am

ok will do hmm my only question what epoxy do you think i should use marine or plastics epoxy
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Unread postAuthor: roboman » Mon Jan 19, 2009 12:03 pm

Marine epoxy. It's what JSR uses and recommends.
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