Alley Oop Co-axial

Cannons powered by pneumatic pressure (compressed gas) using a valve or other release.
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keep_it_real
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This gun is called Alley Oop which stands for All (ey) Out Of Porportion. It's not totally out of porportion, I just felt like naming a gun Alley Oop. The pilot valve is a ball valve. I don't really think it looks that good but it does work well. I decided to post it because no one else was posting anything too interesting (Want some grapes for example haha)

The piston is hot glue with some neoprene for a seal against the barrel.
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hunter1992
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nice clean gun. good job!
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TwitchTheAussie
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Man you are bored lol Nice gun :P
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paddo
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nice cannon mate. im working on one a bit similar myself but mine is a bit more ' in proportion' :lol: looks nice and clean good job

are you going to paint it ?
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mega_swordman
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And thus, from boredom, arrises greatness...or something. Looks good, and clean, better primming than my cannon. And with that said, I must build more.
"Never tell people how to do things. Tell them what to do and they will surprise you with their ingenuity." George S. Patton
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burgerace69
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how far does it shoot? what kind of accuracy does it have?
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keep_it_real
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The range depends on the projectile. Nerfs go fast but not far. Accuracy depends on how fast I can turn the ball valve without jerking the gun too much.
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burgerace69
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kool what you should do is try to replace the bal valve with a blowgun.
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scatdawg
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nice gun theres nothing wrong with the proportions
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lukemc
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scatdawg wrote:nice gun theres nothing wrong with the proportions
this is a coaxail. im guessing the C:B ratio is about .4:1 but other than that there is nothing wrong with the proportins :roll:

you would actualy might improve performance whith a shorter barrel
Last edited by lukemc on Sun Apr 22, 2007 10:41 am, edited 1 time in total.
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spudthug
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hah he wouldnt be able to move that piston with a blowgun
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kool what you should do is try to replace the bal valve with a blowgun
4" piston valved cannon-half done..( i spilt my cement...)

Hybrid- 75% done. need to build propane holder and drill/tap sparkplug hole..
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