prototype ballistic knife

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
User avatar
Crna Legija
First Sergeant 2
First Sergeant 2
Posts: 2333
Joined: Sun Jul 20, 2008 5:14 am
Location: australia

Wed Apr 27, 2011 6:46 am

Jsr was talking about using a quick connect to make a ballistic knife in another thread(cant find it), so i gave it a go. Its quite powerful at only 75 psi it made it thought a ester egg and 1 peace of card board, not bad since it has no barrel. The blade is made from a broken hack saw blade pretty sharp.

edit vid

[youtube][/youtube]
Attachments
damage pic.
damage pic.
the blade. it only sharpened on one side with a bench grinder
the blade. it only sharpened on one side with a bench grinder
knife.jpg (33.13 KiB) Viewed 6000 times
the hole thing. good entry for teh ghetto comp.
the hole thing. good entry for teh ghetto comp.
'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson

Add me on ps3: wannafuk, 8/11/11 cant wait
User avatar
LovableAirGuns
Specialist 2
Specialist 2
Posts: 267
Joined: Tue Sep 28, 2010 5:58 am

Wed Apr 27, 2011 7:07 am

haha that is awsome :D
User avatar
Lockednloaded
Staff Sergeant
Staff Sergeant
United States of America
Posts: 1566
Joined: Thu Sep 03, 2009 9:38 pm
Location: Texas, USA
Been thanked: 6 times

Wed Apr 27, 2011 8:25 am

So all you really need is a blade and a QD without an internal check valve? Neat :)
I love lamp
User avatar
Crna Legija
First Sergeant 2
First Sergeant 2
Posts: 2333
Joined: Sun Jul 20, 2008 5:14 am
Location: australia

Wed Apr 27, 2011 8:38 am

yeah thats all there to it. just gotta leave the rubber washer in there. its only good for about 200psi because its super hard to open any higher.
'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson

Add me on ps3: wannafuk, 8/11/11 cant wait
User avatar
mark.f
Sergeant Major 4
Sergeant Major 4
Eritrea
Posts: 3627
Joined: Sat May 06, 2006 11:18 am
Location: The Big Steezy
Has thanked: 52 times
Been thanked: 53 times
Contact:

Donating Members

Wed Apr 27, 2011 8:51 am

I like the look of the knive/QD combo.

Another interesting thing, you now have a bayonet for anything you can make and simply attach a female QD to the end. :wink:
PVC Arsenal 17
Staff Sergeant 3
Staff Sergeant 3
Posts: 1762
Joined: Mon Mar 27, 2006 4:18 pm
Location: United States

Wed Apr 27, 2011 10:43 am

What a simple and brilliant idea. Leave it to JSR. I'll be making a few of these now..
User avatar
Crna Legija
First Sergeant 2
First Sergeant 2
Posts: 2333
Joined: Sun Jul 20, 2008 5:14 am
Location: australia

Wed Apr 27, 2011 11:16 am

mark.f wrote:I like the look of the knive/QD combo.

Another interesting thing, you now have a bayonet for anything you can make and simply attach a female QD to the end. :wink:
lol so installing it on my semi.
PVC Arsenal 17 wrote:What a simple and brilliant idea. Leave it to JSR. I'll be making a few of these now..
Good, will like to see what you come up with. If you want it for long range(2m+) you will need a front heavy blade. This one will fly about 5-6m, most of it sideways :D
'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson

Add me on ps3: wannafuk, 8/11/11 cant wait
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26179
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 543 times
Been thanked: 321 times

Donating Members

Wed Apr 27, 2011 11:23 am

Very nice! Shame about the lack of "barrel" - adding a hollow "handle" as per the original design would not only give more acceleration but also act as a drag stabilisation device to make it fly straight.
Crna Legija wrote:Jsr was talking about using a quick connect to make a ballistic knife in another thread(cant find it)
Here

Image
PVC Arsenal 17 wrote:What a simple and brilliant idea. Leave it to JSR.
Not really my idea though, I just took this idea and replaced the spring with compressed air:

Image

Looking forward to what you might come up with, might give it a go myself when I get home... in about a month, grrrr....
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
Crna Legija
First Sergeant 2
First Sergeant 2
Posts: 2333
Joined: Sun Jul 20, 2008 5:14 am
Location: australia

Wed Apr 27, 2011 12:20 pm

i could mod what i have, like
Attachments
the rubber washer in side the QD would hopefuly seal the pipe connect.
the rubber washer in side the QD would hopefuly seal the pipe connect.
knife.jpg (12.28 KiB) Viewed 5912 times
'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson

Add me on ps3: wannafuk, 8/11/11 cant wait
User avatar
dewey-1
Sergeant 3
Sergeant 3
Posts: 1298
Joined: Wed Mar 28, 2007 10:24 am
Location: NE Wisconsin USA

Wed Apr 27, 2011 2:12 pm

Now here is a knife projectile! 12.7 mm bore, about 175 mm long with about 37 mm diameter with blades open.
Attachments
knife-ammo.png
User avatar
Crna Legija
First Sergeant 2
First Sergeant 2
Posts: 2333
Joined: Sun Jul 20, 2008 5:14 am
Location: australia

Wed Apr 27, 2011 2:44 pm

kotabuuki posted a vid about arrow like them in the Archery thread i didn't know how power full bow were in till i saw the jsrs post :shock:
'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson

Add me on ps3: wannafuk, 8/11/11 cant wait
User avatar
Lockednloaded
Staff Sergeant
Staff Sergeant
United States of America
Posts: 1566
Joined: Thu Sep 03, 2009 9:38 pm
Location: Texas, USA
Been thanked: 6 times

Wed Apr 27, 2011 10:36 pm

I've got one put together with some PB quick-connects, any ideas on how to make the knife more stable while still remaining a knife?
I love lamp
User avatar
Crna Legija
First Sergeant 2
First Sergeant 2
Posts: 2333
Joined: Sun Jul 20, 2008 5:14 am
Location: australia

Wed Apr 27, 2011 11:03 pm

add a hollow pipe to the back it should bring the cg forward.
'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson

Add me on ps3: wannafuk, 8/11/11 cant wait
User avatar
jackssmirkingrevenge
Five Star General
Five Star General
Posts: 26179
Joined: Thu Mar 15, 2007 11:28 pm
Has thanked: 543 times
Been thanked: 321 times

Donating Members

Wed Apr 27, 2011 11:55 pm

Interesting thought Duane... a "magic wand" style arrow-launcher, hmm...
hectmarr wrote:You have to make many weapons, because this field is long and short life
User avatar
Lockednloaded
Staff Sergeant
Staff Sergeant
United States of America
Posts: 1566
Joined: Thu Sep 03, 2009 9:38 pm
Location: Texas, USA
Been thanked: 6 times

Thu Apr 28, 2011 11:56 am

I don't see how I could do that with out it getting in the way of the handle. I might try the design with the rod through the male QD, but I'm afraid it wouldnt add much stability... It most important that it resembles a reall knife
I love lamp
Post Reply