QEV+popoff experiment - update: NOW WITH AMMO!

Show us your pneumatic spud gun! Discuss pneumatic (compressed gas) powered potato guns and related accessories. Valve types, actuation, pipe, materials, fittings, compressors, safety, gas choices, and more.
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psycix
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Mon Mar 30, 2009 1:20 pm

I has it! :D
Click here to watch the video!!!

1/4" QEV with popoffs, 6mm barrel (It will get an blowforward bolt soon)
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The little brother of...
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Awwww so cuuuute! :)


More to come!

EDIT:
2nd vid: Wakeup prank...
3rd vid: Max ROF and endurance tests
4th vid: 1/2" QEV gun going crazy
Video shooting ammo!: Shooting steel BB's
Last edited by psycix on Wed Apr 15, 2009 10:11 am, edited 7 times in total.
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iemand
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Mon Mar 30, 2009 1:40 pm

Dawm I love the sound it makes :D Please damage pics asap, and how about a 3ft barrell?(and a silencer)
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Xtazz
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Mon Mar 30, 2009 1:43 pm

Wohaw ! It's fuck'in awesome !
Althrought I didn't understand the whole, I think you've juste created the future of air guns !

Really awesome !

It will be very cool with an ammo feeding system
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ramses
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Mon Mar 30, 2009 1:44 pm

that is the most awesome sound I have heard in a while! great work.

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psycix
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Mon Mar 30, 2009 2:16 pm

Thanks for the quick replies. Im certainly not the first with this though, but yeah, its really cool.
For example.

I just ordered some steel 6mm bb's and I will soon build a blowforward.
Also I will build my own popoff, but then with a mechanism to shut off the air feed during pilotting, also it will run on a higher pressure (30 bar full-auto anyone?) Heck, I may even step over to unregged (only flow regulated) 12grams.
Tomorrow I will make another vid with the fire extinquisher, but then filled up to a higher pressure and going wild until its empty.
that is the most awesome sound I have heard in a while!
And then imagine that it is way louder in real life! A quick burst of this always makes me happy!
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Davidvaini
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Mon Mar 30, 2009 3:04 pm

very very impressive.. I really like the way you described how it cycles.

what bb velocity are you getting?

Can you test it with 6mm Airsoft BB's (.20g) would be nice :D
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ramses
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Mon Mar 30, 2009 3:11 pm

Davidvaini wrote:very very impressive.. I really like the way you described how it cycles.

what bb velocity are you getting?

Can you test it with 6mm Airsoft BB's (.20g) would be nice :D
I don't think he actually shot anything yet...

at least not at full auto
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Brian the brain
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Mon Mar 30, 2009 3:49 pm

I hate it.... :D

Nice goin' there buddy....

Told you the snapvalve was forked...Nice to hear the exhaust still hurts. :D
I tweaked it a bit too much I guess..

That thing sounds so amazing when it's fed by the F.E.!!!!

Now I can;t wait to see a BFB on it....that would be awsome.

The F.E. gives you quite a lot of shots doesn't it?!?!?!
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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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psycix
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Mon Mar 30, 2009 3:52 pm

I just ordered some steel BB's (0,87g). And since I happen to suddenly have some money left, I am about to buy a chrony too. :D

Whoa! I just got an email that my order of BB's has been shipped! I ordered it about three hours ago. Man that is FAST! Gotta love webshops.
I'll just go ordering my chrony ASAP.


Yep, the FE gives a lot of shots! I will see how much I can get out of it tomorrow (anyone offers to count them?)
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Brian the brain
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Mon Mar 30, 2009 3:56 pm

I just rewatched it...I was smiling from one ear to the other


:D
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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john bunsenburner
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Mon Mar 30, 2009 4:06 pm

One little question, hwo exactly is the QEV piloted? I see how the pop of valves work but i dotn understand how the QEV is piloted and how it improves anything i.e. wouldnt this work better with a coax and the pop of at the end of the barrel?
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Davidvaini
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Mon Mar 30, 2009 4:09 pm

EDIT: I'm downloading audacity to figure out the ROF with that fire extinguisher.

Also he can load a single bb in there for the first shot to see the velocity.
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dewey-1
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Mon Mar 30, 2009 4:16 pm

psycix wrote:I has it! :D

More to come!
You definitely do!
And as you said in the video: "AWESOME"

That was a very well presented video!
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JDP12
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Mon Mar 30, 2009 5:10 pm

wow... very impressive psycix... like it ALOT
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POLAND_SPUD
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Mon Mar 30, 2009 5:39 pm

so far it looks quite good.... ohh and the vid is great


I hope you realize that implementing a blowforward bolt is going to be a pain in the ass.. you might try my vertibolt design (if you don't mind buying an air cylinder and if it will work here) or just find a way to minimize flow restrictions cased by the bolt
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