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Dan003400's 7th Pneumatic Gun

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: squeaks » Wed Dec 20, 2006 1:15 am

I'm not dumb insomniac, I know barrel sealers can have o-rings. I have one right now with o-rings. I just was saying that since it didn't it had to be a barrel sealer. If it has o-rings it could be either or, but a chamber sealing one NEEDS o-rings.
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Unread postAuthor: noname » Wed Dec 20, 2006 5:37 pm

A chamber sealing piston doesn't necessarily need O-rings, there just haven't been any without them. :lol:
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Unread postAuthor: squeaks » Wed Dec 20, 2006 5:46 pm

Okay noname, if your so smart, how are you going to make a chamber sealing piston without o-rings. Don't be stupid, it's the only way to separate the pilot from the barrel.
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Unread postAuthor: Insomniac » Wed Dec 20, 2006 5:51 pm

I wasn't saying you were dumb squeaks, I just misunderstood what you said. What you said was right, I just didn't read carefully enough.....and I suppose that makes ME the dumb one lol :lol:
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Unread postAuthor: MrCrowley » Wed Dec 20, 2006 7:35 pm

noname wrote:A chamber sealing piston doesn't necessarily need O-rings, there just haven't been any without them. :lol:


:lol: that made me crack up,but you are right, we just need someone to invest time and moeny into a chamber sealer without O-rings :P
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Unread postAuthor: squeaks » Wed Dec 20, 2006 7:38 pm

Might I reiterate, HOW!!! You can't keep the pressure back without 'em.
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Unread postAuthor: MrCrowley » Wed Dec 20, 2006 8:17 pm

I dunno, why don't you find out,it was a joke.
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Unread postAuthor: noname » Thu Dec 21, 2006 12:15 am

Seriously man, I could make one to hold like 5 psi with some sheet rubber and a barrel sealer. :lol:
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Unread postAuthor: turbohacker » Thu Dec 21, 2006 12:53 am

if the pison is a tight enough fit it shouldn't need o rings just some good thick greese to help seal and lubricate
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Unread postAuthor: sgort87 » Thu Dec 21, 2006 4:23 am

No. Doesn't work that way.

PVC pipe is not perfect. It has many bumps on the inside and you will never make a piston that can seal on the inside and is able to move without o-rings.

Honestly, is it all that hard to stick some o-rings on there?!
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Unread postAuthor: MrCrowley » Thu Dec 21, 2006 5:32 am

well....If you don't have a lathe/table saw etc and have no time to use a file,you shouldn't build a chamber sealer :lol:
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Unread postAuthor: Dan003400 » Sat Dec 23, 2006 3:49 pm

Who is Mr. Bolton?
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Unread postAuthor: Dan003400 » Sun Dec 24, 2006 5:11 am

who is mr bolton?
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Unread postAuthor: rna_duelers » Sun Dec 24, 2006 6:59 am

Wait a QEV is a chamber sealing piston valve and it doesnt have a O-ring,or is it barrel sealing?Im not sure but if it is then there is your answer :wink: .
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Unread postAuthor: nicholai » Sun Dec 24, 2006 11:18 am

its a barrel sealer without o-rings, Its actually more like a diaphragm valve but the phragm is like a flexible cone with a flat spot as a sealing face
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