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VARGAS Nitrogen (inert gas) powered cartridge gun system.

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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VARGAS Nitrogen (inert gas) powered cartridge gun system.

Unread postAuthor: jagerbond » Mon Jun 28, 2010 3:01 pm

VARGAS is designed to be a kinetic energy device cartridge system for less lethal applications. Cartridges are designed to be used across a platform of different devices.

The device pictured here is the SR-1

SR-1 specs
Length 36" - 40" depending on stock extension
12" barrel (does not include internal cartridge bore)
40mm barrel bore
thumb operated breech opening
adjustable breech latch (to account for wear and closure tightness)
air stripping type muzzle brake (USGF brain child)
custom Picatinny type rail with EOTech 552 sight
Hogue AR-15 pistol grip
AR-15 carbine type collapsible stock.

Cartridges specs:
3" in diameter
6" in length
40mm internal bore
14 cubic inch internal cartridge chamber volume
compact internal piston valve (some patent pending stuff on the inside, sorry no pics for now)
operating pressure 100 - 600 psi (safe rating to 1000psi)
typical operating pressure 400 psi

We are currently developing our own round design based on our compound round. The initial ballistics tests show a 10.5 gram ball achieving 652fps with the 12" barrel, cartridge charged to 600psi and no muzzle brake.

Also, we will be anodizing in matte black.

I would like to give props to my design and theory allies JSR and USGF.

Much more to come.
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IMG_4411.jpg
Full view
IMG_4412.jpg
USGF air stripping type muzzle brake.
IMG_4413.jpg
sight rail, cartridge cage close up.
IMG_4414.jpg
breech open
IMG_4415.jpg
breech open cartridge pull out
IMG_4416.jpg
shooter view
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Unread postAuthor: jrrdw » Mon Jun 28, 2010 3:12 pm

How is the cartridge refilled? What all is that going to take? Cost?
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Unread postAuthor: jagerbond » Mon Jun 28, 2010 3:43 pm

jrrdw wrote:How is the cartridge refilled? What all is that going to take? Cost?


The fill station hangs on the the cartridge rim and fills through the internal cartridge pilot valve. Takes about one second to fill.

We will develop a proprietary compound round for less lethal applications. Similar to current but replace the steel head with rubber.

Cost, unknown at this time. Lots of factors to get ironed out still.
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Unread postAuthor: jackssmirkingrevenge » Mon Jun 28, 2010 4:25 pm

Beautiful, and it was a pleasure to assist :) though of course it's the handiwork you and Pete are capable of with the help of your fantastic machines that takes the credit.

Even if it didn't fire at all, the psychological effect of staring down that drainpipe bore must be enough to do the job, especually with the muzzle brake on :D looking forward to seeing some action videos which I am confident will be forthcoming ;)

One also notes that nitrogen is ever so slightly less dense than air (air being mostly nitrogen plus other stuff, some of which is heavier...) which gives you more power potential for given volume and pressure than air or CO<sub>2</sub>. Actually, if you have some helium lying around the shop...
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Unread postAuthor: mobile chernobyl » Mon Jun 28, 2010 4:36 pm

I'm not sure how it works, I had a similar Idea before... maybe it's similar :idea:
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Unread postAuthor: jackssmirkingrevenge » Mon Jun 28, 2010 4:41 pm

mobile chernobyl wrote:I'm not sure how it works, I had a similar Idea before... maybe it's similar :idea:


That's hardly original though is it ;)

Patented too...
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Unread postAuthor: mobile chernobyl » Mon Jun 28, 2010 4:43 pm

Ahh... Pwnt I am lol
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Unread postAuthor: SpudBlaster15 » Mon Jun 28, 2010 4:46 pm

Outstanding work. Finally putting those machining capabilities of yours to good use.
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Unread postAuthor: USGF » Mon Jun 28, 2010 4:55 pm

jackssmirkingrevenge wrote:
mobile chernobyl wrote:I'm not sure how it works, I had a similar Idea before... maybe it's similar :idea:


That's hardly original though is it ;)

Patented too...


JSR,

I doubt Mike mentioned how long it takes to make a cartridge. Suffice to say that the complexity and close tolerances required means a long series of operations on both CNC mills and lathes. Yes, it requires at least 3 of our machines to make. The valve portions are made on a small CNC chucker lathe. The body is turned on a large CNC lathe but the internals are done on a large CNC mill. The end cap is much the same. The simply external shape belies its internal configuration. :D

Thanks again
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Unread postAuthor: jackssmirkingrevenge » Mon Jun 28, 2010 5:07 pm

I clamoured incessantly for simplicity, and the use of commercially sized tubing, but noooo, you just had to overcomplicate things to show off what your fancy machines are capable of :P ;)

At least you ditched the original "honeycomb" design :D
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Unread postAuthor: jagerbond » Mon Jun 28, 2010 5:24 pm

jackssmirkingrevenge wrote:I clamoured incessantly for simplicity, and the use of commercially sized tubing, but noooo, you just had to overcomplicate things to show off what your fancy machines are capable of :P ;)

At least you ditched the original "honeycomb" design :D


It is still a honey comb design, less holes though means we sacrificed .5 cubic inch internal volume.

You were right about cartridge growth. With it fully charged it grows in width and surprisingly in length. The prototype cartridges had to ride the lathe a second trip before the loaded cartridges would allow the breech to close.
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Unread postAuthor: deathbyDWV » Mon Jun 28, 2010 5:32 pm

Wow!!! Very cool... I wants video badly.
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Unread postAuthor: jackssmirkingrevenge » Mon Jun 28, 2010 5:44 pm

jagerbond wrote:It is still a honey comb design, less holes though means we sacrificed .5 cubic inch internal volume.


:shock:

Still think it's over engineered for the pressures you're using, but then again I'm not known to operate within massive safety factors and especially with something that you're marketing you'd want some safeguards in terms of liability so I guess I grudgingly see your point.

You were right about cartridge growth. With it fully charged it grows in width and surprisingly in length. The prototype cartridges had to ride the lathe a second trip before the loaded cartridges would allow the breech to close.


It's something you can use to your advantage because automatically makes cartridge extraction easier. Are there plans to fit a spring-loaded assist to pop the cart out or does the fact that most of the cartridge body is exposed make extraction?
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Unread postAuthor: jagerbond » Mon Jun 28, 2010 6:34 pm

jackssmirkingrevenge wrote:
jagerbond wrote:It is still a honey comb design, less holes though means we sacrificed .5 cubic inch internal volume.


:shock:

Still think it's over engineered for the pressures you're using, but then again I'm not known to operate within massive safety factors and especially with something that you're marketing you'd want some safeguards in terms of liability so I guess I grudgingly see your point.

You were right about cartridge growth. With it fully charged it grows in width and surprisingly in length. The prototype cartridges had to ride the lathe a second trip before the loaded cartridges would allow the breech to close.


It's something you can use to your advantage because automatically makes cartridge extraction easier. Are there plans to fit a spring-loaded assist to pop the cart out or does the fact that most of the cartridge body is exposed make extraction?


engineering aside, its way too difficult to remove the material that deep with a lathe tool or a long endmill. If we decided to make it a 2 piece that would add more leak paths and milling setups associated with 2 parts. Maybe I am misunderstanding what you mean.

There 2 cut aways for regular human sized fingers to pull out the cartridge. We went the simple route on that. Admittedly I am bias, but it seems ergonomically comfortable.
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Unread postAuthor: POLAND_SPUD » Mon Jun 28, 2010 10:44 pm

JSR must have already ji**ed his pants at least 3 times
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Last edited by POLAND_SPUD on Tue Jun 29, 2010 1:53 am, edited 1 time in total.
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