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Vortex cap.

Built a BB Machine Gun? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Vortex cap.

Unread postAuthor: warhead052 » Thu Jul 07, 2011 4:37 pm

Edit, I know it doesn't look good, but I assure you it looks alot better.

This is ready for the next skirmish I can go to. Have fun looking at the pictures. You should be able to figure out how it works...

Operating pressure, 100-200 psi.
Rate of fire, varies from 0-100. It depends on the air flow.
FPS, no clue, but I will update when I find out.
3/4" cap.
1/8" PEX tubing barrel, a nice fit for bbs, tight enough for me to use lung power to shoot them across my yard.

Piccys.

Image
Jsr, the toe is for you.


Image

I know it looks horrible, but it works.


Image

Magazine pulled out.

Image

The main mag and the spare.

I hope you enjoyed looking at these! I will hopefully get a uzi body for it, and a co2 regulator and the whole 9 yards to make this worth the effort put into it. I spent maybe 32 hours on it (yeah I know its alot but hot glue and epoxy and jb weld take ages, plus experimented...)
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Last edited by warhead052 on Sat Aug 27, 2011 9:08 am, edited 1 time in total.

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Re: Vortex cap.

Unread postAuthor: jackssmirkingrevenge » Thu Jul 07, 2011 10:13 pm

Reminds me of a ghetto version ofthis.

warhead052 wrote:Jsr, the toe is for you.


At least it's covered :)
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Unread postAuthor: warhead052 » Fri Jul 08, 2011 8:26 am

:D I wish I could make something like that. But this is pretty much held like a P90. Its nice and compactish.
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Unread postAuthor: warhead052 » Sat Aug 27, 2011 9:07 am

Sorry for the double post, but I am officially putting this through its paces against some 300-400 dollar aeg's today. I hope it goes well!
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Unread postAuthor: saefroch » Sat Aug 27, 2011 10:41 am

I await the results. A well-made vortex at high pressure should have a comparable rate of fire and range to a good AEG, but not accuracy.
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Unread postAuthor: wyz2285 » Sat Aug 27, 2011 11:09 am

A well-made vortex at high pressure should have a comparable rate of fire and range to a good AEG, but not accuracy.

exactly :wink: bbmg´s accuracy are miserable :(
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Unread postAuthor: warhead052 » Sat Aug 27, 2011 8:32 pm

Hahahahaa, it preformed pretty well, except I had to constantly run back and forth about 100 feet to an air compressor, and then back another 100 feet to the base. Other than that, it was alot better than my friends $300 rpk with 400 fps and a rate of fire around 900 rpm. I bulls eyed a enemy at about 50 feet right in the throat with about 10 bb's and he is pretty pissed. Other than that, it has a speed of around 500-600 fps. Grouping varies depending on bb weight, with .02's I shot like a AA-12, but with .20's I was able to shoot with 6" groupings. So its a pretty good gun, but needs more air volume, or higher pressures. Thats all I noticed, except for the fact that instead of cooling as the air passed through, it actually heated up. Dunno why, but at least it worked.
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Unread postAuthor: Gun Freak » Sat Aug 27, 2011 8:35 pm

500-600 fps? That seems a bit steep. If you replaced the vortex block with a detent, it would be way more powerful and use about 3 times less air. I like how you used the fire extinguisher, but I really think you should put a detent on there.
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Unread postAuthor: Crna Legija » Sat Aug 27, 2011 8:43 pm

Gun Freak wrote:500-600 fps? That seems a bit steep. If you replaced the vortex block with a detent, it would be way more powerful and use about 3 times less air. I like how you used the fire extinguisher, but I really think you should put a detent on there.


+1

If I had a readily available supply of bbs id make a detent bbmg too.
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Unread postAuthor: warhead052 » Sat Aug 27, 2011 8:49 pm

Well, its what was compared to a 400 fps gun, so its roughly that speed. All we heard was pat pat pat pat against the back stop, then pat from my friends sniper.
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Unread postAuthor: saefroch » Sat Aug 27, 2011 9:55 pm

I seriously doubt your vortex managed 500fps. Don't mean to hate, but that's an absurd estimate.
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Unread postAuthor: wyz2285 » Sun Aug 28, 2011 4:45 am

I agree, 500-600 fps are a lot for a low pressure bbmg without a detent :roll: . 0.20 g bbs are light, even with my co-axial rifle at 200 psi I don´t think I can fire a 0.20 g bb to 600 fps with a correct trajectory
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Unread postAuthor: jackssmirkingrevenge » Sun Aug 28, 2011 5:41 am

saefroch wrote:A well-made vortex at high pressure should have a comparable rate of fire and range to a good AEG, but not accuracy.


Unless you control it, the BBMG's ridiculous rate of fire should more than make up for lack of accuracy, especially at longer ranges with a wider spread.

Well, its what was compared to a 400 fps gun, so its roughly that speed. All we heard was pat pat pat pat against the back stop, then pat from my friends sniper.


The good ol' human ear chrony ;) I think you'll need a better yardstick than that.
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Unread postAuthor: warhead052 » Sun Aug 28, 2011 9:54 am

Well, I don't have access to any chrony, or know anyone who has one that I could borrow, so I won't know the actual speed. I will tell you the most ridiculous number I got from the other people at the skirmish was something along the lines of like 1500 fps... I let them think that, and I won't shoot them down (no pun intended) and tell them that its only some where around 400 fps.
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Unread postAuthor: Labtecpower » Sun Aug 28, 2011 10:15 am

I think 1500 fps is certainly possible with a strong spring-piston airgun with .20 gram bb's. It would hurt accuracy however.
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