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coaxial, 2" barrel, 3" piston, 4" chamber

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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coaxial, 2" barrel, 3" piston, 4" chamber

Unread postAuthor: richardbridges » Sun Nov 19, 2006 9:12 am

Has anyone built a coaxial with a 4" chamber, 3" piston, and a 2" barrel? If you have, let me know how it worked. If not, let me know what you think.
Thanks,
R. B.
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Unread postAuthor: schmanman » Sun Nov 19, 2006 9:17 am

yes, It should work just fine. those are kind of the average dimensions of a large coaxial. It has been done before, and It works wonderfully.
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Unread postAuthor: noname » Sun Nov 19, 2006 12:15 pm

This is because of your perfect 3" piston, yes? It'll work fine.
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Unread postAuthor: richardbridges » Sun Nov 19, 2006 3:10 pm

Why yes, it is :) It's already built and works great. I just wanted to see how anyone else would fit a 4" chamber with a 3" piston. As soon as I get a better camera I'll stick it up here.
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Unread postAuthor: richardbridges » Sun Nov 19, 2006 4:28 pm

Here it is. I'll get better pics soon.
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Unread postAuthor: King_TaTer » Sun Nov 19, 2006 5:57 pm

Nice .. i like the tripod lol
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Unread postAuthor: POS » Mon Nov 20, 2006 1:57 pm

Wow, big ass cannon. Looks nice. At what pressure do you shoot it, and what's your ammo ?
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Unread postAuthor: richardbridges » Mon Nov 20, 2006 4:47 pm

5 foot long 4 inch diameter chamber with a 7 foot 2 inch diameter barrel. I've just been using potatos at 75 pounds. That's my limit on 28 acres. Most of the time I still don't even see them land.
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Unread postAuthor: schmanman » Mon Nov 20, 2006 5:09 pm

try a 12 inch long, 3/4 inch diameter steel pipe nipple, wrapped in tape, and shot at 5 pieces of plywood at the same time. you'll enjoy it. :D
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