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Rotary Gun

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Rotary Gun

Unread postAuthor: Atlantis » Tue Jul 11, 2006 12:44 am

In this design, the ammo is what holds the air back and a disk holds the ammo in. A rubber ring helps the ammo hold the air back. The ammo and chamber sit behind the disk and each chamber has it's own ammo, there is one barrel. When the chamber/ammo reaches a gap in the disk the ammo is allowed to slide forward and out the barrel. You would only be able to spin the gun once but that's good enough, if you made a vertical clip version of this you could have as many shots as you want, you could even make a belt fed version.
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Unread postAuthor: FiveseveN » Tue Jul 11, 2006 9:03 am

There are a number of problems, but it's a good thing that your cogs are turning :)
1. You only need to have one hole, and the barrel attached to the disk. I'm sure you figured that out, but it doesn't show in your drawing.
2. Sealing the chambers with the projectiles is one thing, but sealing the barrel+disk against the firing chamber is quite a pickle.
3. Have you calculated how much force your disk would have to withstand?
Say we have three 1'' ID chambers at 100 PSI each.
100 * 3 * (pi * 0.5^2) = 235.6 lb
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Unread postAuthor: Atlantis » Tue Jul 11, 2006 4:04 pm

Well if the chambers were aloud to slide forward, the would slide into the hole in the disk, using a spring and a rubber ring to seal it against the barrel.

Well if the disk were made of wood with a sheet of steel on the barrel side it should be strong enough.

As for the rotating part, you could bleed some off the gas off from the barrel to drive a small piston attached to a ratchet.

http://www.flying-pig.co.uk/mechanisms/ ... tchet.html
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Unread postAuthor: Brian the brain » Wed Jul 12, 2006 2:34 am

Seems like Atlantis is a good name for you.You keep searching but haven't yet found the winning idea.I suggest you actually build your idea's and you will find the flaws in them.That way you will learn about what works and what doesn't. Things might not be as you imagined when you have the design in your hand.Or impossible to build/fit/adapt/slide or get airtight.Whatever.You really need to move away from "all theory" and go out and build!! Then you will find your Atlantis.( I'm not putting you down!! I think you could be an innovator if you practice what you preach)
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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: Nereth » Mon Aug 07, 2006 4:22 am

there may be an easier way to have it rotate...

the easiest way would be to have the barrel assembly isntead of the ammo assembly rotate, and drill a little hole int he side of it that would jet some gas in the other direction.

The harder way would require the same thing on the ammo side, with some seals so it only fires when the ammo moves out of it.
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Unread postAuthor: blck1jack » Sat Sep 02, 2006 5:59 am

Ok I have given this alot of thought and I was recently thinking of the same thing. Its basically a revolver system. It uses a track made out of pipe or a metal track with wheels. The barrel and the chamber on a track. The barrel is on a longer track to allow compensation for the chamber also moving forward. The track is mounted etheir directly on the pipe or on a peince of ply wood. the barrel is supported by the a grip which is mounted to the track. The chamber is made by taking one sectiong of pipe and mounting it inside another and mounting smaller sections of pipe around the edges liken to the one pic shown above. The inner tube is held in side the outer tube by two flaps made of plastic or wood and glued to the outer chamber. The chambers hold the ammo only. Which will be a hand made airsoft shell made out of rolled out of wax paper. Approx 3 in in circumference and 3 inches tall. The chamber has a handle attached to one side if the chambers wall. made out of a small section pipe and fitters. The chamber is easily sealed on each end due to that the barrel, the chamber, and the air flow pipe are reduced to the same circumfrence. The pipes are connected with two sections of fitters and secured with rubber o- rings slid over where the pipes connect. Firing procedure is simple. Fill tank with a compressor or bicycle pump. Push barrel and chamber forward on tracks. Load shells or whatever ammo you chose into the chambers. Align chambers slide chamber in to airsource tube. Silde o O-rings. Slide barrel into chamber. Slide down Orings on barrel fitter. Release valve and FIRE!!!. I can't draw digitally well very yet. I don't know much about valves so maybe you guys could suggest a type that would work well for this design. I am open for any criticism so bring it on.


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Unread postAuthor: Atlantis » Thu Sep 07, 2006 4:22 pm

That pic needs to be bigger, I can't see any details. I know I nreally need to start building stuff, I built one pump-action, but it was horrible to use, The whole barrel had to be moved, I was in the process of fixing that when I dropped the loader and snapped it.

P.S. That was very deep Brian.
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Unread postAuthor: zeigs spud » Sat Sep 23, 2006 1:23 pm

to get mine to turn i use a crank if it helps, well i havn't built it but you'll c why if you look at the blue prints lol

http://www.spudfiles.com/forums/viewtopic.php?t=3769&
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