Tiny cannon + Collateral damage

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SpudFiles Forum Index » Mini Cannon Showcase » Tiny cannon + Collateral damage

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Tiny cannon + Collateral damage

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inonickname

Posted: 07/03/2010 3:42 AM Post subject: Tiny cannon + Collateral damage

Major General

Joined: 07 Dec 2008
Posts: 2487
6556.71 Spud Bux

*For the purposes of discussion here, to fire this cannon I blow through the pilot hole.

I think this would count as one of the highest energy density minis here. It uses a precisely machined venturi to accelerate a 4mm steel bore to high velocities in only 3cm using the power of your breath.

It's machined from 316 stainless steel to prevent overpressure from the highly advanced valve mechanism rupturing the barrel.

After firing through both sides of a steel can, a towel and a piece of plywood it proceeded to exit through the side of the shed, 5 meters away. I believe this new air-breath valve I have created can revolutionize small bore airguns. Unfortunately I have a patent pending so I can't show the innards Rolling Eyes

The cannon:

Down the firing line: (point blank target removed for clarity)

The wall:

Camera batteries need replacing.

jhalek90

Posted: 07/03/2010 5:23 AM Post subject:

Lieutenant Colonel

Joined: 14 Aug 2009
Posts: 476
1341.46 Spud Bux

So, other than your lung power.... is there any source of energy?

jackssmirkingrevenge

Posted: 07/03/2010 5:25 AM Post subject:

aspiring machinist
Donating Member

Joined: 15 Mar 2007
Posts: 18060
32518.54 Spud Bux

jhalek90 wrote:

So, other than your lung power.... is there any source of energy?

Nothing we'll be discussing here Rolling Eyes

POLAND_SPUD

Posted: 07/03/2010 5:28 AM Post subject:

Lieutenant General

Joined: 13 Oct 2007
Posts: 4387
11901.36 Spud Bux

@jhalek90
can't you read between the lines?? Wink

@inonickname
I odn't think it is the best idea to post it here...

Crna Legija

Posted: 07/03/2010 5:39 AM Post subject:

shots shots shots
Major General

Joined: 20 Jul 2008
Posts: 1915
1664.80 Spud Bux

what pressure are you generating with your lungs? Wink

do you just shoot 4mm bbs

qwerty

Posted: 07/03/2010 5:39 AM Post subject:

Colonel

Joined: 12 Apr 2009
Posts: 628
520.78 Spud Bux

So you blow through it but it's held in a vice Wink

FighterAce

Posted: 07/03/2010 6:03 AM Post subject:

1st Lieutenant

Joined: 23 Oct 2009
Posts: 262
500.72 Spud Bux

qwerty wrote:

So you blow through it but it's held in a vice Wink

maybe its actually made of depleted uranium so he cant even hold it Laughing

jrrdw

Posted: 07/03/2010 7:42 AM Post subject:

Donating Moderator
Donating Moderator

Joined: 16 Nov 2005
Posts: 5522
9129.22 Spud Bux

Any video's of it in action? You realy filed for a patent?

MRR

Posted: 07/03/2010 8:26 AM Post subject:

Captain

Joined: 17 Feb 2009
Posts: 332
939.66 Spud Bux

@jrrdw
I think the matchstick in the first picture is not only for size comparison.... Wink

SpudBlaster15

Posted: 07/03/2010 11:39 AM Post subject:

Hybridian

Joined: 18 Oct 2006
Posts: 2372
295.89 Spud Bux

Looks a bit like a smaller version of my old TATP powered BB cannon. Wink

jrrdw

Posted: 07/03/2010 14:03 PM Post subject:

Donating Moderator
Donating Moderator

Joined: 16 Nov 2005
Posts: 5522
9129.22 Spud Bux

MRR wrote:

@jrrdw
I think the matchstick in the first picture is not only for size comparison.... Wink

That doesn't tell me if there is a video of it in action or if he realy filed for a patent...

Zeus

Posted: 07/03/2010 17:18 PM Post subject:

Colonel

Joined: 27 Oct 2009
Posts: 749
1863.37 Spud Bux

inonickname, I get it. Mind if I PM you to confirm what I think?

jor2daje

Posted: 07/03/2010 18:26 PM Post subject:

Lieutenant Colonel

Joined: 05 Oct 2008
Posts: 416
787.14 Spud Bux

haha i dont think he wants us to guess anything hes just showing a neat "air" cannon he machined.

inonickname, looks great I hope to make something similar once I get my new southbend lathe going.

Hotwired

Posted: 07/03/2010 20:09 PM Post subject:

UK Spudgunner
Lieutenant General

Joined: 13 Oct 2006
Posts: 2578
6346.06 Spud Bux

I've got a patent pending valve in a genuine antique flintlock musket.

I'll post damage pictures later.

Looks interesting but seriously...

deathbyDWV

Posted: 07/03/2010 21:11 PM Post subject:

Colonel

Joined: 16 May 2009
Posts: 577
813.12 Spud Bux

Haha looks cool... I wonder how you blow so hard? I guess just years of practice... Rolling Eyes

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