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Tiny cannon + Collateral damage

Posted: Sat Jul 03, 2010 4:42 am
by inonickname
*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 :roll:

The cannon:
Image

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

The wall:
Image
Image

Camera batteries need replacing.

Posted: Sat Jul 03, 2010 6:23 am
by jhalek90
So, other than your lung power.... is there any source of energy?

Posted: Sat Jul 03, 2010 6:25 am
by jackssmirkingrevenge
jhalek90 wrote:So, other than your lung power.... is there any source of energy?
Nothing we'll be discussing here :roll: :wink:

Posted: Sat Jul 03, 2010 6:28 am
by POLAND_SPUD
@jhalek90
can't you read between the lines?? :wink:

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

Posted: Sat Jul 03, 2010 6:39 am
by Crna Legija
what pressure are you generating with your lungs? :wink: :wink:

do you just shoot 4mm bbs

Posted: Sat Jul 03, 2010 6:39 am
by qwerty
So you blow through it but it's held in a vice :wink:

Posted: Sat Jul 03, 2010 7:03 am
by FighterAce
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 :lol:

Posted: Sat Jul 03, 2010 8:42 am
by jrrdw
Any video's of it in action? You realy filed for a patent?

Posted: Sat Jul 03, 2010 9:26 am
by MRR
@jrrdw
I think the matchstick in the first picture is not only for size comparison.... :wink:

Posted: Sat Jul 03, 2010 12:39 pm
by SpudBlaster15
Looks a bit like a smaller version of my old TATP powered BB cannon. :wink:

Posted: Sat Jul 03, 2010 3:03 pm
by jrrdw
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...

Posted: Sat Jul 03, 2010 6:18 pm
by Zeus
inonickname, I get it. Mind if I PM you to confirm what I think?

Posted: Sat Jul 03, 2010 7:26 pm
by jor2daje
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.

Posted: Sat Jul 03, 2010 9:09 pm
by Hotwired
I've got a patent pending valve in a genuine antique flintlock musket.

I'll post damage pictures later.







Looks interesting but seriously...

Posted: Sat Jul 03, 2010 10:11 pm
by deathbyDWV
Haha looks cool... I wonder how you blow so hard? I guess just years of practice... :roll: :P