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coaxial pneumatics

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coaxial pneumatics

Unread postAuthor: cardinals08 » Tue Jan 10, 2006 11:33 pm

I was just wondering, if you have a coaxial pneumatic, that would mean that the valve is in the chamber, right? How would you get it open? By remote maybe? sorry if it is a dumb ?
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Unread postAuthor: boilingleadbath » Wed Jan 11, 2006 3:02 pm

*drops filing cabinate on cardinals08*

Co-axials typicaly use home-made pilot valves; the vent is in the back. You open it, which lets air out, to fire. (check the spudwiki for "diaphram valve" or "piston valve")

However, there has been atleast one example of a sprinkler valve being used in a co-axial. (<a href="http://www.advancedspuds.com/pneumatic.htm">link</a>)
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Unread postAuthor: cardinals08 » Wed Jan 11, 2006 3:51 pm

oh my god, how could I have been so stupid
I could have sworn I looked it up one day and couldnt find anything on the Wiki, it must have just been a dream. sorry for that
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Unread postAuthor: saladtossser » Wed Jan 11, 2006 5:28 pm

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Unread postAuthor: nicholai » Sat Jan 21, 2006 3:22 pm

what if you mounted a tiny pneumatic cylinder inside a pvc tee section? (like an smc pneumatic cylinder one used on automated pneumatic machinery). spring loaded of course so it could close up upon complete chamber depressurization. would this open fast enough? it would look like a supah valve from the outside with less screws in the outside
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Unread postAuthor: CS » Sat Jan 21, 2006 5:38 pm

I actually thought of doing the same thing. Cant remeber who I was talking to on AIM about it. Ive never done it so I dont know, but I imangne it would work good. I think a supah would open faster though because it vents the air through a sprinkler instead of a small 1/8" hole or so on pneumatic cylinder. Its worth a try though. Give me some time and I might get around to making one.
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Unread postAuthor: nicholai » Sat Jan 21, 2006 6:02 pm

well actually the pneumatic cylinder i was thinking of actuating the piston (could be a pvc piston with o-rings) would be small but fast. a smaller hole than 1/8th would actuate the cylinder and piston. Im to too certain but im not so sure a large volume of air would be needed to move a small piston in a pneumatic cylinder, and as long as the piston to seal off the barrel was lightweight enough it should open fast enough to launch some serious spuds

maybe this post belongs in the theories section?
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