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Post by saladtossser on Sept 13, 2005 20:40:38 GMT -5
www.spudfiles.com/uploader/uploadFiles/boltfinal.pngthis is a barrel sealing piston, the barrel is on the left, fill and exhuast are on the right. the point is that this piston will allow a bolt(like the slider by clide) to return easier and wastes absolutly no air. the only downsides are that its expensive, long, and complex. try to figure it out, if you see any problems with it, or other comments, post. has this been done before?
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Post by blowemupspudguy on Sept 13, 2005 21:47:44 GMT -5
i can't say that i get the concept, is the whole diagram just the piston? perhaps if you could add more of the gun to the diagram, i don't get it as it is now.
Edit: what are the red and gray parts on it?
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Post by sgort87 on Sept 13, 2005 23:46:52 GMT -5
Yeah, labels, please. My brain hurts when I look at it.
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Post by saladtossser on Sept 14, 2005 14:35:21 GMT -5
the whole thing is the piston, the red is rubber washers, grey is nuts and bolts. two of the three washers act as check valves
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Post by blowemupspudguy on Sept 14, 2005 16:09:04 GMT -5
is this for a coaxical, over under, or a chamber sealing cannon?
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Post by saladtossser on Sept 14, 2005 17:32:23 GMT -5
to quote myself, barrel sealing piston
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Post by blowemupspudguy on Sept 14, 2005 21:24:06 GMT -5
oh haha, sorry, musta glanced over it
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Post by blowemupspudguy on Sept 14, 2005 21:27:05 GMT -5
how does that, as you say, "to return easier and wastes absolutly no air" i don't get how it wastes no air, some air still has to be relesed to bring the piston back, unless im missing somthing
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Post by saladtossser on Sept 15, 2005 15:49:14 GMT -5
if u use a blow-forwad bolt, then when it returns, it's going to trap a bit of air when is comes back. the check valve in the piston lets that air out so it can return easier. the second check valve stopped air to leak from the chamber to the exhause, but lets you fill from the pilot.
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Post by blowemupspudguy on Sept 15, 2005 16:04:12 GMT -5
ok i think im starting to get this more, but to get it fully id prolly need a flash animation or demonstration of how it works step by step
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Post by saladtossser on Sept 15, 2005 17:53:14 GMT -5
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Post by blowemupspudguy on Sept 15, 2005 18:26:26 GMT -5
ah! i get it now! that is awsome! you were right in saying it would be a pain to build too. good job thinking of the disign though, it could be made shorter, but it would ba alot harder to build than it is allready
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Post by sgort87 on Sept 15, 2005 23:21:34 GMT -5
Uhhhhh.........
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Post by blowemupspudguy on Sept 16, 2005 13:59:13 GMT -5
if i see it right, all the rubber washers act as one way valves, if air is pushing on one side of the washer the pressure seals it off. if it's on the other side it pushes the center out which lets air through the hole in the washer.
in picture 2 pressure is opening the first washer which lets air into the chamber, but it puts pressure on the wrong side of the second washer, sealing it off from the barrel.
in the third picture the cannon is being fired, the drop in pressure is opening the center washer 'valve'. once that happens pressure from the chamber leaks through the chamber fill holes and shoots the piston back by putting pressure on the rightmost washer.
that's how i understand the piston would work with a typical piston cannon with a valve behing the piston to fire it. im going to try and look for this 'bolt return' fireing action to understand it fully. if it were just a release valve that was used to fire this piston it would actually waste more air because when the piston flew back it would leave the hole in the piston wide open for the air to flow right out of it, as opposed to the barrel. that's why i think it's important that i know what the bolt return is to realy get it
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Post by sgort87 on Sept 17, 2005 0:32:06 GMT -5
Yeah, umm, still not gettin it, I feel so stupid. Explain it to me on aim...
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