Pneumatic Pen-gun Project

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SpudFiles Forum Index » Mini Cannon Showcase » Pneumatic Pen-gun Project

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Pneumatic Pen-gun Project

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jackssmirkingrevenge

Posted: 05/08/2007 21:22 PM Post subject:

space monkey
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Joined: 15 Mar 2007
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If you build the cartridge with the schrader at the base of it, there's no need to come up with an innovative design - you have ever a century of cartridge firearm mechanism development for reference Wink

It's on my "to do" list but I'm working on something else at the moment.

paaiyan

Posted: 05/08/2007 21:37 PM Post subject:

Ascendant Defenestrator
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This is pretty sweet. I bet this'd be awesome to piss teachers off at school. If you had a way to refill it there.

jackssmirkingrevenge

Posted: 05/08/2007 21:48 PM Post subject:

space monkey
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paaiyan wrote:

This is pretty sweet. I bet this'd be awesome to piss teachers off at school. If you had a way to refill it there.

The pump I use is very compact when folded, only slightly longer than the launcher itself - though of course I don't in any way advocate or condone its use for malicious purposes.

paaiyan

Posted: 05/08/2007 21:49 PM Post subject:

Ascendant Defenestrator
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jackssmirkingrevenge wrote:

paaiyan wrote:

This is pretty sweet. I bet this'd be awesome to piss teachers off at school. If you had a way to refill it there.

The pump I use is very compact when folded, only slightly longer than the launcher itself - though of course I don't in any way advocate or condone its use for malicious purposes.

Oh of course not. Wink

ammosmoke

Posted: 05/08/2007 22:27 PM Post subject:

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Joined: 27 Sep 2006
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I don't understand, how does this work? Wouldn't pushing on the end vent the pressure out of the shrader? Thus doing nothing? How does this...?

keep_it_real

Posted: 05/08/2007 22:30 PM Post subject:

Captain

Joined: 23 Dec 2006
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Yes it does vent it but only behind the piston. The piston moves back and lets the air in front of the piston out the barrel. It is a barrel sealing co-axial if you want to research it.

ammosmoke

Posted: 05/08/2007 23:12 PM Post subject:

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OH!! *mind block blows up* I get it now!! I could never understand how co-axials work until now. It relieves the pressure just enough for the piston to move back and "unclog" the barrel, then pow! I am so glad I finally got it!!

jackssmirkingrevenge

Posted: 05/09/2007 2:10 AM Post subject:

space monkey
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ammosmoke wrote:

I am so glad I finally got it!!

You've been a member since September and only got it now Confused

Ah well, better late than never Wink

origin unknown

Posted: 05/09/2007 17:41 PM Post subject:

Colonel

Joined: 14 Apr 2007
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Why isn't your entry in the voting list?

pyromaniac

Posted: 05/09/2007 17:43 PM Post subject:

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Joined: 27 Feb 2007
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His gun is the only mini it automatics moves to the next round.

origin unknown

Posted: 05/09/2007 17:43 PM Post subject:

Colonel

Joined: 14 Apr 2007
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oops...forgot it was a mini

joannaardway

Posted: 05/11/2007 10:25 AM Post subject:

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Joined: 09 Oct 2006
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Very innovative. This probably qualifies as one of the smallest spudguns in history.

My only really mini "cannon" to date was a coilgun. My brother then of course had to come up with something twice as good, and three times as efficent, but it was still damned fun.

FeLeX

Posted: 05/11/2007 12:01 PM Post subject:

Captain

Joined: 10 Mar 2007
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If it isnt a secret, what did your bro come up with?

jackssmirkingrevenge

Posted: 05/11/2007 12:23 PM Post subject:

space monkey
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joannaardway wrote:

Very innovative. This probably qualifies as one of the smallest spudguns in history.

Thanks

The smallest semi-amateur pneumatic I can think of is this device: pop-shot micro gun - chambered in 0.177 using the Brocock micro air cartridge (now illegal in the UK thanks to your lovely government Razz

) at about 900 psi.

I haven't seen a smaller co-axial though Very Happy

I could easily have gone smaller lengthwise but I wanted some measure of power.

ammosmoke

Posted: 05/11/2007 18:57 PM Post subject:

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Joined: 27 Sep 2006
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THat is so CoOl!!! I wish I had one of those key chain guns!!! They cost so much though... WAAAAHHH!!!

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