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Mitcho's new gun! (Push button valve MkII)

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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Mitcho's new gun! (Push button valve MkII)

Unread postAuthor: Mitchza89 » Thu Oct 08, 2009 10:40 pm

Hey guys,

I've been tinkering with the push button valve idea and this is the best I've been able to come up with. I think it's one of the best builds I've done and the most aesthetically pleasing. This push button valve has some serious flow. It actuates my marble piston gun faster than what my 1/2'' ball valve trigger that I used to use on my "whammy" and "BFS" guns not to mention it's really comfortable to hold.

My new pump is nearly complete and I'm pretty damn confident the push button valve could take around 300psi if not more.

Thanks very much :)
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Unread postAuthor: jmadden91 » Thu Oct 08, 2009 10:58 pm

Wow Mitch congratulations that thing is beautiful. Your push button valve and trigger system is genius. What pressure have you taken it to? Is the trigger easy to pull?
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Unread postAuthor: roboman » Thu Oct 08, 2009 11:13 pm

It almost looks steampunk... very nice work!
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ilovetoblowthingsup wrote: The yellow/orange back fits super snugly, very nice in fact, but the head does not fit.
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Unread postAuthor: Mitchza89 » Thu Oct 08, 2009 11:45 pm

Thanks a lot Jacob. I've only been able to max the compressor out but the o rings are as solid as my head. I have aluminum tubing behind the o rings so they have no chance of blowing out at high pressures. I'll be getting stuck into the pump tomorrow.

I found my old pop off valve so I'm gonna come up with a pilot valve that uses the same sort of fill and grip but use a sear to hold the pin to the pop-off in place. With no spring, it'll virtually explode open when the trigger is pushed and the sear actuated.

Thanks a lot too Roboman :)

Kind regards.
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Unread postAuthor: jackssmirkingrevenge » Fri Oct 09, 2009 12:08 am

Excellent :) I love the bent nail trigger! Reminds me of this high tech cupboard lock in the place I was staying in Moscow :D
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Unread postAuthor: Mitchza89 » Fri Oct 09, 2009 12:25 am

Bahaha, Those Russians really know the "simple but effective" :D. I plan on taking off that crappy nail and bending and welding a few polished bolts together to add to the look of it. I'll see if I can fit on a nice trigger guard too.

Thanks Jack :)
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Unread postAuthor: jackssmirkingrevenge » Fri Oct 09, 2009 1:04 am

Mitchza89 wrote:Those Russians really know the "simple but effective" :D


So true, I felt so at home! :cry:

Though I have to admit, at Kubinka a scooted right past the T-34s to drool over the Panther, Tiger, King Tiger, Jagdtiger & Maus!
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Unread postAuthor: Mitchza89 » Fri Oct 09, 2009 1:15 am

Oh man, that would have been so good to see.. Much envy..

On a better note. There is a hardware shop near me closing down. They have bagged 90 dollars worth of assorted pressure pipe fittings in 1/2, 3/4 and 1'' fittings. The bags came in those sizes.

THEY ARE BEING SOLD FOR $20!

If only I still built pressure pipe guns... dammit... But I got a nice brass check valve and a crap load of brass fittings for 12 bucks. I worked out in my head that it should have cost me $60.

:D......
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Unread postAuthor: pipeboyswe » Fri Oct 09, 2009 2:50 am

Nice gun :D would be awesome with some damage pics :twisted:
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Unread postAuthor: Brian the brain » Fri Oct 09, 2009 10:00 am

Very nice!!
You could use the sawdust and glue method like I did on the latest sawed-off...
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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: POLAND_SPUD » Fri Oct 09, 2009 10:04 am

nice... where do you get those Ts with male threads??
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Unread postAuthor: Crna Legija » Fri Oct 09, 2009 10:56 am

Nice gun, it would look good with a stock.

In ozland Bunnings sells the same tees for air compressors
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Unread postAuthor: Reactor4 » Fri Oct 09, 2009 1:13 pm

nice gun man, love the combo of brass and silvery look. how does your pushbutton release the pilot air? is there like a hole in the back?
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Unread postAuthor: Brian the brain » Fri Oct 09, 2009 3:33 pm

Try the bottom... :idea:
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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: Mitchza89 » Fri Oct 09, 2009 4:11 pm

Hey guys,

Thanks very much for the kind words. I get those 1/4'' male tee's from my local hardware in the "air tools and compressors" section. Every place on earth should sell them in that section.

The gun pilots out the fill port. When I plug in the compressor, I pull the trigger the valve pushes in and allows the gun to be filled.

The bolt itself has been heavily machined down to give the give flow possible. Surprising what you can do with a drill press, a hacksaw blade and a file :D

Reactor4, this is a pic of the button pushed in. It shows the back of the bolt pushes through so that the o ring is pushed out.
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Valve open. This is positioned directly behind QEV's piston so the gun pilots mighty quickly.
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