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Full Auto 50

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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Re: Full Auto 50

Unread postAuthor: wyz2285 » Sat Mar 22, 2014 5:40 pm

Exactly :)
A extension to move back the sealing face it's a good idea, the piston can be simpler and consequently lighter- faster opening and more power. But either way, without a chronograph I don't think the power will vary noticeably (JSR may say otherwise, I'm just too lazy to think about this matter thoughtfully :lol:)
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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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Re: Full Auto 50

Unread postAuthor: dajoro » Sat Mar 22, 2014 9:49 pm

I was refering to the simple tool you called "el presto changeo" . I assume you made that custom to your barrel i.d. size ? I've got lots of .490" lead I would be able to presto-changeo into .470". :roll: (should have built the gun around the ammo supply )
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Re: Full Auto 50

Unread postAuthor: jackssmirkingrevenge » Sun Mar 23, 2014 5:05 am



Why not an off-the-shelf QEV and pop-off?

Wait, are you planning something like this?

popoff spool.jpg


Never had much luck with this configuration, they all cycled way too fast to be useful.
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Re: Full Auto 50

Unread postAuthor: kustomkb » Sun Mar 23, 2014 11:55 am

Thanks again for your input guys, it's a big help.

Dajaro, yes, it's just a hole in a piece of steel. I made it a couple thou smaller than my barrel ID. I didn't want to ream the entire length of the barrel to 5/8th's, which I should have, like you said, "make the gun suit the ammo". Wood workers use these to make dowels. If you are using lead, I'm sure a tapered bore would squeeze it into shape nicely.

Why not an off-the-shelf QEV and pop-off?


I figured if I made my own, I could increase the volume of the chamber?

Looking good, let's see this thing empty a magazine :)


Well the wife left, and took the kids to her mom's for the night, so I said to heck with the basement reno, let's blow some sh#t up!!;





After I blew the lights out, I figured I better call it a night... :)

.
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Re: Full Auto 50

Unread postAuthor: jackssmirkingrevenge » Mon Mar 24, 2014 6:24 am

kustomkb wrote:After I blew the lights out, I figured I better call it a night... :)


HAHAHAHAHAH :mrgreen: :mrgreen: :mrgreen:

I caught this on tape once :)



I figured if I made my own, I could increase the volume of the chamber?


I figure a small chamber hidden in the pistol grip would suffice.
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Re: Full Auto 50

Unread postAuthor: kustomkb » Thu Mar 27, 2014 5:21 pm

Ha! It looks like we suffer from the same affliction.

If anybody is wondering about safety; I used wooden dowels for the test, the gun was remotely fired and I was wearing a face shield and hard hat.

I figure a small chamber hidden in the pistol grip would suffice.


Yeah, it would sure save me a lot of work...

Here is the latest interpretation of the drum magazine;




Cheers.
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Re: Full Auto 50

Unread postAuthor: jackssmirkingrevenge » Fri Mar 28, 2014 9:25 am

Really liking the magazine design!
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Re: Full Auto 50

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Re: Full Auto 50

Unread postAuthor: kustomkb » Sat May 24, 2014 1:00 am

Thanks Jack!

A bit more;


Munitions Factory;


Image



Snail drum;


Image



Image




Image







Cheers!
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Last edited by kustomkb on Sun May 25, 2014 12:02 pm, edited 1 time in total.
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Re: Full Auto 50

Unread postAuthor: cammyd32 » Sat May 24, 2014 5:41 am

My god, that's beautiful!
I am not impressed easily, but I think that might just be the most intricate and detailed magazine mechanism I have ever come across on the files, and it works beautifully too!
I have to be honest, the amount of stuff people put on here without having any desire to make it is rather astonishing at times, and when you posted your CAD design I had my doubts it would ever be made, but I have to say, I am very impressed, I'm really looking forward to what the finished thing will look like!
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Re: Full Auto 50

Unread postAuthor: sagthegreat » Sat May 24, 2014 1:36 pm

how heavy is that magazine?
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Re: Full Auto 50

Unread postAuthor: kustomkb » Sun May 25, 2014 12:07 pm

Thanks Cammy! I really appreciate the compliment. I like to think that when I say I'm going to do something, it gets done. Maybe not right away...

There is a slight hesitation under a full load, so I think I'll beef up the spring a bit.

STG, fully loaded, 5 1/4 pounds. Probably less than the real thing.

Cheers!
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Re: Full Auto 50

Unread postAuthor: jackssmirkingrevenge » Sun May 25, 2014 7:02 pm

Holy mother of... So proud this is happening on the same land mass *tear*
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Re: Full Auto 50

Unread postAuthor: matti » Mon May 26, 2014 12:51 pm

The snail drum mag mechanisim looks so cool that you should machine the lid from transparent polycarbonate.. or at least you could make a small polycarbonate window in the aluminium one to see how many rounds you have left :D

Looking very goood ! and that's said by a full time cnc machinist.

..Oh and when you get it done don't forget to get it anodized, it will make it look nice and it also makes aluminium much more wear resistant. You probably knew that, but just reminding :)
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Re: Full Auto 50

Unread postAuthor: Brian the brain » Wed May 28, 2014 4:05 pm

I'm going to cry myself to sleep tonight... :D
Truely awesome work!!
Just incredible!

but...

Wouldn't "Nautilus" sound a bit cooler than snail??

:wink:
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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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Re: Full Auto 50

Unread postAuthor: jackssmirkingrevenge » Thu May 29, 2014 12:29 pm

Brian the brain wrote:Wouldn't "Nautilus" sound a bit cooler than snail??


BtB ladies and gentlemen, offical forum namer :D
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