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Banana Gun-Condemned

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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Banana Gun-Condemned

Unread postAuthor: SpudsMcGee » Wed Jan 28, 2009 7:31 pm

Specs:
Barrel Diameter-1.5 inch
Barrel Length-2 feet (without Ghetto Extension)
Chamber Diameter-2 inch
Chamber Length-1 foot
Valve- Ball (don't judge me!)
Image
&
Image
condemned
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Last edited by SpudsMcGee on Sun Feb 01, 2009 12:40 am, edited 2 times in total.
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Unread postAuthor: inonickname » Wed Jan 28, 2009 7:37 pm

forum rules wrote:Pneumatic Cannon Showcase
Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.


Cool I guess, get some pics up.
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Unread postAuthor: SpudsMcGee » Wed Jan 28, 2009 7:43 pm

I have finished it, but SpudFiles says its an empty file. They are on now.
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Unread postAuthor: inonickname » Wed Jan 28, 2009 7:48 pm

Cool gun, but that isn't electrical tape holding the extension on, and gorilla glue on the joints is it?

Nice work
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Unread postAuthor: SpudsMcGee » Wed Jan 28, 2009 8:01 pm

Its duct tape holding the extension, and regular pvc cement on the joints.
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Unread postAuthor: MrCrowley » Wed Jan 28, 2009 8:10 pm

Did you use PVC primer on the joints also?

Is that a cleanout end cap on the chamber as well? Cleanout end caps aren't pressure rated and can even fail at combustion cannon pressures (80-60PSI and below).
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Unread postAuthor: SpudsMcGee » Wed Jan 28, 2009 8:14 pm

Yes, of course. Only the extension is unorthodox.
It is a cleanout cap, but I usually operate it at 40 psi.
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Unread postAuthor: MrCrowley » Wed Jan 28, 2009 8:25 pm

A man was killed when his cleanout cap blew off and hit him in the chest using a 'spray and pray' combustion IIRC. He died of a heart attack or something. Spray and Pray's only generate about 40PSI. I think even less then that.
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Unread postAuthor: starman » Wed Jan 28, 2009 8:28 pm

SpudsMcGee wrote:Its duct tape holding the extension, and regular pvc cement on the joints.


Funny I've never seen PVC cemet cure to that color, with or without primer. How do you account for the way-odd yellow color?
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Unread postAuthor: SpudsMcGee » Wed Jan 28, 2009 8:37 pm

Crowley: Thanks for the info.
Starman: I think the cement was orange in the first place.
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Unread postAuthor: inonickname » Wed Jan 28, 2009 8:40 pm

Fair enough about the cleanout cap, but wouldn't it be facing away from him most the time? :idea:
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Unread postAuthor: SpudsMcGee » Wed Jan 28, 2009 8:45 pm

I think, he's saying when I am filling it up.
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Unread postAuthor: MrCrowley » Wed Jan 28, 2009 9:34 pm

Or even the fact that it could blow at any time when you have it pressurized when you move it into position...meaning expensive objects might be in the firing line. The fact that it will fail at sometime would be enough for me to take it off.
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Unread postAuthor: starman » Wed Jan 28, 2009 9:44 pm

SpudsMcGee wrote:Starman: I think the cement was orange in the first place.


Really...do you have the maker and model of the cement handy by any chance?

I'm more curious than anything.
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Unread postAuthor: SpudsMcGee » Wed Jan 28, 2009 9:59 pm

The maker is Oatey.
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