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Mk IV QEV Popoff. Updated 22 Feb

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: Mitchza89 » Thu Apr 30, 2009 8:17 am

Ahh it's nice seeing people do something that's never been done in our day and age. Not much at all these days is truly unique.

I really do take my hat off to you Subsonic.
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Unread postAuthor: sputnick » Thu Apr 30, 2009 3:36 pm

Mitchza89 wrote:Ahh it's nice seeing people do something that's never been done in our day and age. Not much at all these days is truly unique.


Um, I'm pretty sure this has been done several times before, or maybe I'm just mistaken, but I am pretty much 100% sure this idea has been around for a while.
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Unread postAuthor: SubsonicSpud » Thu Apr 30, 2009 7:13 pm

sputnick wrote:
Mitchza89 wrote:Ahh it's nice seeing people do something that's never been done in our day and age. Not much at all these days is truly unique.


Um, I'm pretty sure this has been done several times before, or maybe I'm just mistaken, but I am pretty much 100% sure this idea has been around for a while.


Agree with you there sputnick.

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It is not a new idea, it has been around for a while. I don't want to take credit for the idea, I am just constructing it in a different manner and incorporating the ammo feed into a single unit 8)

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Unread postAuthor: VH_man » Thu Apr 30, 2009 7:32 pm

Im wanting to quote a TheLonelyIsland song at the moment, but Im refraining.

I dont know why, But it just looks SO SWEET. I cant wait for this to be a legit gun.
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Unread postAuthor: Mitchza89 » Thu Apr 30, 2009 8:00 pm

So this idea of QEV made out of a solid block of acrylic (or whatever it might be) has been around for a while?

:? I've been a member for a long time on here and not once have I seen it.
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Unread postAuthor: SubsonicSpud » Thu Apr 30, 2009 9:20 pm

Mitchza89 wrote:So this idea of QEV made out of a solid block of acrylic (or whatever it might be) has been around for a while?

:? I've been a member for a long time on here and not once have I seen it.


Thought you were talking about the QEV pop off idea, not the construction materials. Yep I don't think I have seen one made the same, so I guess you are right :D

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Unread postAuthor: Mitchza89 » Fri May 01, 2009 7:30 am

:D Exactly. Sorry, I should have said that. You guys were right through, the pop off idea has been around for about 18 months. It's only really taken off since Psycix and yourself brought back the idea. I for one did not get many comments for my gun but that's understandable when I'm just another moth attracted to the flame that is semi/full auto.
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Unread postAuthor: SubsonicSpud » Fri May 01, 2009 7:49 am

Mitchza89 wrote::D Exactly. Sorry, I should have said that. You guys were right through, the pop off idea has been around for about 18 months. It's only really taken off since Psycix and yourself brought back the idea. I for one did not get many comments for my gun but that's understandable when I'm just another moth attracted to the flame that is semi/full auto.


No problem, thanks for the good comments.

By the way, who came up with the idea of the QEV Popoff, or using a Popoff as a pilot? I have not been able to find any thread that claims it as a new idea.

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Unread postAuthor: Mitchza89 » Fri May 01, 2009 7:56 am

I promise you JSR will find it. He's like the Grand Poobaa in the world of Spuddies.

It's funny how spudding goes in cycles. It wasn't long ago that small bore and high pressure was the fad.

Well I'm going to make a fully auto marble gun just to be a smart arse :D
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Unread postAuthor: Brian the brain » Fri May 01, 2009 8:02 am

The first time I can remember is this
http://www.spudfiles.com/forums/full-au ... t4108.html
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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: Mitchza89 » Fri May 01, 2009 8:07 am

Yeah that's it. That was the one I was thinking of. Good find BTB :D.

Since the master is here, what's next for BTB? Some sort of Rail Gun? :D
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Unread postAuthor: SubsonicSpud » Fri May 01, 2009 8:13 am

Mitchza89 wrote:I promise you JSR will find it. He's like the Grand Poobaa in the world of Spuddies.

It's funny how spudding goes in cycles. It wasn't long ago that small bore and high pressure was the fad.

Well I'm going to make a fully auto marble gun just to be a smart arse :D


I might have to start working a fully auto slightly bigger than a marble gun then :D
actually I might see if I can get my QEV and ammo feed to keep up with my hammer valve repeater I made before the QEV gun, 28 rounds per second with the current layout would be very interesting. It would certainly make a mess of a watermelon :wink:

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Unread postAuthor: Mitchza89 » Fri May 01, 2009 8:14 am

:shock: Good grief. WHY have you not posted this?!

The hammer valve gun I mean. A lot of people are interested in Hammer valves
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Unread postAuthor: SubsonicSpud » Fri May 01, 2009 8:25 am

Mitchza89 wrote::shock: Good grief. WHY have you not posted this?!

The hammer valve gun I mean. A lot of people are interested in Hammer valves


I have posted it

not a gun but just a pilot valve.

This one here:
http://www.spudfiles.com/forums/repeating-hammer-valve-design-t17854.html

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Unread postAuthor: SubsonicSpud » Thu May 07, 2009 4:01 am

Well I finally got around to putting a test barrel and mag on the new QEV, and I am very happy with the results :D

I added a spring to the mag and boy dose it improve ammo feeding. Now able to fire at 12-13 rounds per second with a muzzle velocity of between 480-520 fps and just over 10ft/lbs and that is only with the pop off set at about 12bar :twisted:

I did a whole heap of damage testing the last two days on just about everything I could think of:

[youtube]http://www.youtube.com/watch?v=rJ0D4RhsAgo[/youtube]

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Going to make a 90round mag parallel with the barrel next and also trigger the gun with a solenoid, Then I can start working on some ergonomics.

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