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"Lempo" pneumatic ballistic knife

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"Lempo" pneumatic ballistic knife

Unread postAuthor: jackssmirkingrevenge » Mon Oct 17, 2011 1:20 pm

Version 2 of my pneumatic ballistic knife using the same concept but with more attention to detail and most impressive of all, a fantastic dagger blade crafted by jakethebeast which really sets it off.

There's room for refinement in the "tail" and I would like to make the collar bigger diameter to make it easier to trigger, but as I've got it to firing stage, here it is:

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... and of course, a video in action at 350 psi:

[youtube]http://www.youtube.com/watch?v=SRpAqP8uNi4[/youtube]
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Unread postAuthor: warhead052 » Mon Oct 17, 2011 1:39 pm

Nice. I saw the video right after you uploaded, and then knew that you would be posting the completed product soon! It looks excellent. Whats the operating pressure?
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Unread postAuthor: vardas » Mon Oct 17, 2011 1:44 pm

that's great craftmanship!..& amazing attention to detail.
any vids?...i think i saw something like that in one of the blade movies
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Unread postAuthor: Brian the brain » Mon Oct 17, 2011 1:44 pm

That looks so ghetto...



NOT!!!

Excellent work!
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: Goats spudz » Mon Oct 17, 2011 1:49 pm

i like it... no no that's very sexy
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Unread postAuthor: al-xg » Mon Oct 17, 2011 1:51 pm

How high will you dare go pressure wise ?

Very pretty.
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Unread postAuthor: Moonbogg » Mon Oct 17, 2011 1:57 pm

That is really impressive. It seems to work well too. I could have fun sitting around and plinking at stuff with that thing.
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Unread postAuthor: jor2daje » Mon Oct 17, 2011 2:03 pm

looks great, Id throw some grooves or knurling on the collar and maybe a tail cap to protect the shrader. Does it hold pressure for extended periods? Awesome job
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Unread postAuthor: velocity3x » Mon Oct 17, 2011 2:04 pm

jsr,
The idea of a ballistic knife never did anything for me. I wouldn't even view threads about them. However, after seeing this post and your youtube vid, I'm now an instant convert. Beautiful design and workmanship! All praise to you and jake.
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Unread postAuthor: Hotwired » Mon Oct 17, 2011 2:07 pm

:)

Is the sleeve held on by any means?

I'm thinking a slot in the knife body with a grub screw in the sleeve to limit movement would work in that respect.
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Unread postAuthor: jakethebeast » Mon Oct 17, 2011 2:20 pm

nice, i like my blade on that :wink: this looks very nice, im happy that i got to be part of it
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Unread postAuthor: jackssmirkingrevenge » Mon Oct 17, 2011 2:53 pm

jakethebeast wrote:nice, i like my blade on that :wink: this looks very nice, im happy that i got to be part of it


Most of the credit goes to you :)

Thanks for all the kind words guys.

How high will you dare go pressure wise?


I'm happy to take it to 800 in terms of construction, the problem is collar stiffness, as it is at 350 you can barely push it with your thumb. It definitely needs a wider diameter collar for easier firing, unfortunately the brass of the appropriate diameter I had set aside was all used to make jake's valve :roll:

Id throw some grooves or knurling on the collar and maybe a tail cap to protect the shrader.


Both on my "to do" list :)

I'm thinking a slot in the knife body with a grub screw in the sleeve to limit movement would work in that respect.


Yes, a stop of some sort is also planned, there are some unaired "fail" videos where I push the collar too far and the balls shoot out in all directions like some miniature schrapnellmine :oops:
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Unread postAuthor: wyz2285 » Mon Oct 17, 2011 2:57 pm

wow that´s BEAUTIFUL :shock:
not a knife guy but I would buy that :D
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CpTn_lAw wrote::D "yay, me wanna make big multishot pnoob with 1000 psi foot pump compressor using diamond as main material. Do you think wet bread make good sealant? " :D
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Unread postAuthor: jakethebeast » Mon Oct 17, 2011 3:40 pm

JSR, i made that sheath for just to protect the blade in shipping, if i would know that you would actually use it, i would have made it much more better looking :D
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Unread postAuthor: jackssmirkingrevenge » Mon Oct 17, 2011 3:51 pm

I'm not really "using" it in the sense that I won't be carrying this thing around, but it's useful to protect the blade and very smart so happy with it :)

wyz2285 wrote:not a knife guy but I would buy that :D


If these weren't of dubious legal status in most places I'd be selling them!
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