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Alley Oop Co-axial

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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Alley Oop Co-axial

Unread postAuthor: keep_it_real » Mon Apr 16, 2007 11:53 pm

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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Unread postAuthor: hunter1992 » Tue Apr 17, 2007 12:07 am

nice clean gun. good job!
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Unread postAuthor: TwitchTheAussie » Tue Apr 17, 2007 2:17 am

Man you are bored lol Nice gun :P
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Unread postAuthor: paddo » Tue Apr 17, 2007 3:40 am

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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Unread postAuthor: mega_swordman » Tue Apr 17, 2007 5:15 am

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.
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Unread postAuthor: burgerace69 » Sat Apr 21, 2007 10:03 am

how far does it shoot? what kind of accuracy does it have?
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Unread postAuthor: keep_it_real » Sat Apr 21, 2007 10:45 am

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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Unread postAuthor: burgerace69 » Sat Apr 21, 2007 3:11 pm

kool what you should do is try to replace the bal valve with a blowgun.
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Unread postAuthor: scatdawg » Sat Apr 21, 2007 7:24 pm

nice gun theres nothing wrong with the proportions
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Unread postAuthor: lukemc » Sun Apr 22, 2007 8:30 am

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
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Last edited by lukemc on Sun Apr 22, 2007 10:41 am, edited 1 time in total.
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Unread postAuthor: spudthug » Sun Apr 22, 2007 8:43 am

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
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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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