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The D-M2

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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The D-M2

Unread postAuthor: Gaderelguitarist » Sun Feb 01, 2009 10:04 pm

This is my first cannon to utilize a modified sprinkler valve. This is due in part because of a misunderstanding with my local hardware store which led me to believe that they did not stock them.

This cannon is a modification of an earlier cannon named "The Dowel Cannon", as its barrel would post on a wooden dowel mounted to the PVC set-up. The earlier version was constructed with a ball valve, filled with a bike pump, and it's performance was decent, but not acceptable. I opted for a series of modifications...

1. Switch out the Ball valve for a Modified Sprinkler
2. Thread on a quick-disconnect setup so that a compressor could be used
3. Create a BBMG barrel attachment that would allow me to raise airsoft hell :twisted:

Specifications:
Valve: Modified Orbit Watermaster, blowgun actuated
Chamber: Roughly 4' of 1 1/4" PVC
Barrels: 1/2" Sniper
3/4" Devastator
1 1/4" Mortar
1/4" Airsoft
1/2"x5 Revolver
Ergonomics: Ridiculous!


Here is the completed D-M2 without barrel
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Here is the D-M2 with the glorious Revolver barrel
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Here are my barrel options
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Here is one of the 1/2" shells I use
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And finally, some damage :twisted:

Board hit three times with 1/2" shell
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Sheet metal for the first time
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I'm hoping to get a video made of the D-M2 in action, showing all of the barrels being used.
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Last edited by Gaderelguitarist on Mon Feb 02, 2009 3:29 pm, edited 2 times in total.
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Unread postAuthor: trigun » Sun Feb 01, 2009 10:07 pm

Very nice cannon ! Looks extremely comfortable to fire. What is your typical operating pressure ? The revolver barrel looks like a marvel of beautiful craftsmanship good job.
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Unread postAuthor: Gaderelguitarist » Sun Feb 01, 2009 10:12 pm

Thanks! I built it with comfort in mind.

I generally run it on 100 PSI, but when i want to destroy something quickly, or i want to get some killer recoil, I'll go with 120.

And The revolver barrel wasn't actually that difficult. It was a matter of geometry.
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Unread postAuthor: SpudsMcGee » Sun Feb 01, 2009 10:14 pm

Very, Very nice cannon (top that trigun)! And the revolver looks sick-nasty!

Edit: Cool bullet idea, too.
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Last edited by SpudsMcGee on Sun Feb 01, 2009 10:27 pm, edited 1 time in total.
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Unread postAuthor: starman » Sun Feb 01, 2009 10:17 pm

Nice work! Obviously some original thought put into its design and use. That's some pretty decent sheet metal damage you have there.
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Unread postAuthor: Davidvaini » Sun Feb 01, 2009 10:48 pm

post some pics of the revolver barrel attached ;)
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Unread postAuthor: Gaderelguitarist » Sun Feb 01, 2009 10:57 pm

Davidvaini wrote:post some pics of the revolver barrel attached ;)


I'm going to get a video up tomorrow, if time allows, showing all of the barrels in use.

But if you still want a pic of it attached i think i can do that too.
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Unread postAuthor: Davidvaini » Sun Feb 01, 2009 11:14 pm

yeah I would like a still as well.
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Unread postAuthor: Gaderelguitarist » Mon Feb 02, 2009 3:32 pm

Sorry guys, the video has to wait until its warmer.

Unfortunately, I forgot that it would be unsafe for me to fire the cannon outside due to winter temperatures not mixing well with PVC :oops:

However I did put up a picture of the D-M2 with the Revolver barrel attached.
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