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I HAS FULL AUTO :D

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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Unread postAuthor: POLAND_SPUD » Sat Apr 18, 2009 3:40 pm

yeah it does look cool, however...

The design of the valve is so simple it's not that hard, the complexity comes from having to make a feed system too

you've spent all these years building this... and now you are stuck at the same problem that I encountered

a 1/2" spool valve or a QEV + spool valve combo and a timing circut would work as good as this - if not more reliably... I even found a way to make it go full auto without having to fiddle with electronics

I've never quite understood your personal crusade to build this... what's the point of minimizing wasted air when inevitably the valve will have lower perfomance than a qev...?
tell me...couldn't you just accept minute loss of air per one cycle, could you?? :wink:
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Unread postAuthor: jackssmirkingrevenge » Sat Apr 18, 2009 5:42 pm

Lentamentalisk wrote:Nothing says "well built" like a shiny piece of steel pipe :)


It's a bit more than the 400 or so psi I'm used to so I'm not taking chances with a PVC body ;)

SPOOLAND_SPUD wrote:I've never quite understood your personal crusade to build this... what's the point of minimizing wasted air when inevitably the valve will have lower perfomance than a qev...?
tell me...couldn't you just accept minute loss of air per one cycle, could you??


Every man has his Holy Grail, constant flow full auto is mine ;) This valve operates in the same way as a piston valve does, in that the pressure difference between the faces of the piston pushes it back, opening an outlet to the barrel - so why should a valve like this (built to optimal dimensions) have lower performance than a QEV?

As to my love for efficiency, waste not, want not :D

Gah can't wait to try it out, I'm very confident I'm on to a winner but if I don't give it another 12 hours I'm sure it will blow up :roll: :D
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Unread postAuthor: psycix » Sat Apr 18, 2009 5:44 pm

jackssmirkingrevenge wrote:
psycix wrote:Cant wait to see it! Dont dare to fail now! :wink:

Too late :(
Image

Argh, you know what happens when you overload failboats, they'll FAIL!

Maybe you should also give QEV+popoff a shot.
I'll say it again: dont dare to fail!
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Unread postAuthor: jackssmirkingrevenge » Sat Apr 18, 2009 5:49 pm

psycix wrote:Maybe you should also give QEV+popoff a shot.


Silence, oh demon of wasted air!

I'll say it again: dont dare to fail!


I'm sure I got it right this time, give it a few hours ;)

edit: it works! Well, sort of. Without a ball valve it's very hard to hit that "sweet spot" of flow that makes it cycle before the tank is empty. Methinks there are more purchases to be made.
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Unread postAuthor: SubsonicSpud » Sun Apr 19, 2009 4:31 am

Excellent, can't wait to see some video of it in action once the valving is sorted.
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Unread postAuthor: jackssmirkingrevenge » Sun Apr 19, 2009 6:20 am

Turns out I was using a spring that was too weak :roll: tweaked it and CLUCKING BELL!, new thread coming up soon :D
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Unread postAuthor: SubsonicSpud » Sun Apr 19, 2009 6:36 am

jackssmirkingrevenge wrote:Turns out I was using a spring that was too weak :roll: tweaked it and CLUCKING BELL!, new thread coming up soon :D


Time to send the Boat Of FAIL back to china. :D Go get working on that new thread JSR
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