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B.A.R. Pnuschnikov full auto prototype

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Unread postAuthor: Brian the brain » Tue Mar 16, 2010 4:24 pm

Just go to home depot and BUY one, then


Send me a ticket to the states and I will...
What a load of boltlocks, just go with the sleeve


Why? This system is working just fine.. :D
I like that QD thing on it... but who said it needs that air ram where it is ?? if the ram has to open the QD first and than the QD has to open too this means that there will be some delay caused by inertia


Yes...it is this inertia that makes sure the ammo gets launched at full speed, without the massive pressure drop from the bolt opening too early..
It might not need the airram..but it works fine the way it is...

Get it yet??

It's working!!!!!!!!!

:D
I need to get a new barrel and tighter ammo...I'll consider this a prototype..butta...tha bolt slams back all the way on every single shot I've tried and relocks.
The ammo needed some tape to seal so I did not feel like finishing the mag as I would have trouble feeding anyway...
But the single shots proved the basic idea works...

oh and...

The power is in-freaking-sane...

Time to properly lathe and machine a complete model now..
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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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Brian the brain
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Unread postAuthor: Mr.Sandman » Tue Mar 16, 2010 5:48 pm

Any readings on fps? As with the good majority of your designs i always like to point out a personal suggestion...Longer barrel!

But its still amazing that you would call this work of art a prototype it looks very neat and well organized. I like a lot and cant wait for the finished product! :)
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Yeah, it's that important.
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Unread postAuthor: Brian the brain » Wed Mar 31, 2010 5:28 pm

Sorry..this project is on hold untill I save up for the materials to do it the right way...

Meanwhile I'm working on this:

http://jumbodesign.nl/phpBB3/viewtopic. ... ddb54518d9.

I'll post a topic about it here when I finish the gun..
You all know what I'm gonna make with it... :D
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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: irisher » Tue Jul 27, 2010 10:14 am

I know this thread has been dead for awhile but, I think I have something useful to contribute. It was discussed earlier in the thread that a check valve could be used to improve ram performance. My question is this, if a check valve was installed would the increased pressure retention overcome the fact that less air would enter the ram due to increased flow restriction?
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Unread postAuthor: POLAND_SPUD » Tue Jul 27, 2010 3:48 pm

that's a tricky question you know :D anyway you still have to vent the ram after that

personally I think he should forget about all that delayed blowback thing... just put the strongest spring you can get and that's it
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Children are the future

unless we stop them now
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Unread postAuthor: Brian the brain » Wed Jul 28, 2010 1:20 pm

Poland, that has been discussed before, I believe.
I made it this way as an experiment, not because it is the easiest way to do it.

My question is this, if a check valve was installed would the increased pressure retention overcome the fact that less air would enter the ram due to increased flow restriction?


No way to tell without testing..

There are too many factors at play here.

I wish more people would give the idea a try, so we can see what, for instance, a larger bore would do for this thing.
Or placing the system further back on the barrel..

So many variables....
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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: irisher » Wed Jul 28, 2010 4:26 pm

I wish more people would give the idea a try, so we can see what, for instance, a larger bore would do for this thing.
I'm trying it with a 50 cal. barrel and I am considering adding the check valve but I am unsure and that's why I brought this thread up.
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