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compact pneumatic progress v2

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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compact pneumatic progress v2

Unread postAuthor: Major Collins » Fri Mar 30, 2012 5:43 am

updating this thread http://www.spudfiles.com/forums/compact ... 23695.html

i was able to make a more compact piston valve with less pieces.Piston travel is about a 1 cm and flow is good.

here are some pics
Image

Image

comparison to first airgun
Image
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Unread postAuthor: quark1980 » Fri Mar 30, 2012 5:58 am

nice, how are you planning to pilot?

how did you build the sealing face on the barrel side?
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Unread postAuthor: Major Collins » Fri Mar 30, 2012 6:08 am

i use the blow gun attachment thing i made to pilot and the sealing face is a flared nipple just threaded in. Heres one for reference http://www.heating-parts.co.uk/media/ST ... 179BC0.JPG
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Unread postAuthor: quark1980 » Fri Mar 30, 2012 6:34 am

nice, i like the build without machined parts... since i dont have a lathe or anything other then a drill press( @ work)

the only thing i dont really get is the blowgun / airroute to vent the pilot...

it seems you are losing some minor performance there...

i would guess that one would simply let the air go trough the blowpistol in reversed direction opposite to its intended use....
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Unread postAuthor: Major Collins » Fri Mar 30, 2012 7:47 am

i would but it leaks at about 80 psi because that isn't its original airflow direction. So i rerouted it to the bottom and it has max performance ive only taken it to 160 psi only because its the highest psi any of my devices could put out... but all seem well and fine.
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Unread postAuthor: quark1980 » Fri Mar 30, 2012 8:16 am

ok, that`s a valid reason :P


basicly the pressure would force the valve open if used backwards...
understood :P
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Unread postAuthor: Brian the brain » Fri Mar 30, 2012 1:40 pm

You had me at "compact"


:D
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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