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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: mark.f » Tue Nov 28, 2006 8:09 pm

This is just a little boredom sort of thing while I've got nothing to do.

My marble machine gun was giving me all sorts of trouble. The paddle just stopped working periodically and finally I just got tired of it. I couldn't enjoy shooting it.

So, replaced the pop-off with a 1/4" mnpt check valve and male quick disconnect, and then removed the entire tee loading system.

I now have two barrels I can use for it. One is the original 1/2" x 24" steel pipe for marbles, which I just drilled and tapped for a small screw at the back for a ball stop.

The other barrel is a length of .68" ID hydraulic aluminum tubing.8) Perfect paintball barrel. Even beats all that 3/4" CPVC or 3/4" SCH-160 or whatever is supposed to be "great". This barrel is 40" long and is connected to the gun with a 3/4" compression adapter.

The valve is just your run-of-the-mill 1/2" quick-exhaust valve.

I can't wait to do some testing with the paintballs, and I'm going to pick up a bucket or so sometime soon because I need paint for playing anyway.

Here's some pictures.

Modular shot...
full.jpg (23.68 KiB) Viewed 252 times

A view of the quick-exhaust...
valve.jpg (26.98 KiB) Viewed 252 times

bore.jpg (13.49 KiB) Viewed 252 times

That's it!
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Last edited by mark.f on Sun Oct 20, 2013 3:00 pm, edited 2 times in total.
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Unread postAuthor: PVC Arsenal 17 » Tue Nov 28, 2006 8:12 pm

good stuff. Metal guns always look cool.
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Unread postAuthor: ProfessorAmadeus » Tue Nov 28, 2006 8:13 pm

Woah...That last ones weird. If you look at it for a long time it looks like its spinning
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Insomniac wrote:Hey why am I a goose???? Why not somthing a little more awe inspireing, like an eagle or something? LOL

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Unread postAuthor: experament_u2 » Tue Nov 28, 2006 8:17 pm

its mad now markfh11q i like the new exhaust much beter
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