i dont understand how a piston in an air cannon works

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SpudFiles Forum Index » General Spud Cannon Related » i dont understand how a piston in an air cannon works

i dont understand how a piston in an air cannon works

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Fat Joe 91

Posted: 05/31/2008 15:35 PM Post subject: i dont understand how a piston in an air cannon works

Private First Class

Joined: 22 May 2008
Posts: 25
33.56 Spud Bux

i don't understand how the construction of a air cannon with a piston to make it shoot semi automatically. can some one please help.

_Fnord

Posted: 05/31/2008 15:45 PM Post subject:

reenigne

Joined: 13 Feb 2007
Posts: 1257
1892.97 Spud Bux

If you understand how a piston valve works, then all you'd need to do is make a trigger that closes the fill valve and opens the pilot valve in one motion.

This could be done with something as simple as 2 blowguns and a spring/cable.

POLAND_SPUD

Posted: 05/31/2008 15:45 PM Post subject:

Brigadier General

Joined: 13 Oct 2007
Posts: 984
2470.13 Spud Bux

well there are several ways of doing it... first of all you can use a NO (normally open) 3 way valve.. - the valve that would let air to the gun and then block the incoming air while venting the pilot side... spool valves are one example of such valves.. but a slide valve is used more commonly

Fat Joe 91

Posted: 05/31/2008 17:18 PM Post subject:

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Joined: 22 May 2008
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33.56 Spud Bux

the only thing is i dont know how it works

TwitchTheAussie

Posted: 05/31/2008 17:24 PM Post subject:

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Joined: 06 Feb 2007
Posts: 935
1016.00 Spud Bux

Basically when you fill the chamber the air pressure forces the piston against the barrel sealing it. Right? Ya with me? Using a pilot behind the piston the air rushes backwards opening the barrel and the air goes out the barrel. Anyone got a diagram on this?

BigGrib

Posted: 05/31/2008 17:53 PM Post subject:

GribNation Founder
Colonel

Joined: 01 Oct 2007
Posts: 627
220.47 Spud Bux

There are plenty of topics with diagrams on Spudfiles about how a piston valve works. You could try searching for them.

Fat Joe 91

Posted: 05/31/2008 17:55 PM Post subject:

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Joined: 22 May 2008
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33.56 Spud Bux

ok thank you umm if any one has any diagrams they would like to show me that would be greatly appreciated

taytayswims

Posted: 05/31/2008 18:05 PM Post subject:

Specialist

Joined: 29 Apr 2008
Posts: 56
104.20 Spud Bux

animated pistons
http://www.spudfiles.com/forums/piston-valves-explained-visually-t8157 .html

Fat Joe 91

Posted: 05/31/2008 19:33 PM Post subject:

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Joined: 22 May 2008
Posts: 25
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thank you so much i now understand

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