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Stuff's New Gun

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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Stuff's New Gun

Unread postAuthor: SpudStuff » Fri Dec 15, 2006 2:46 am

This is the gun I was given "funding" for. I recieved the money for this for my 15th birthday.
4"x24" SCH 40 PVC Chamber
2.5"x66" SDR 21 Barrel
Piston valve with 3" Porting.
Pictures say it all!
Click these!
<a href="http://i92.photobucket.com/albums/l39/SpudStuff/CIMG3802.jpg" target="_blank">
<img src="http://i92.photobucket.com/albums/l39/SpudStuff/th_CIMG3802.jpg"></a>
<a href="http://i92.photobucket.com/albums/l39/SpudStuff/CIMG3801.jpg" target="_blank">
<img src="http://i92.photobucket.com/albums/l39/SpudStuff/th_CIMG3801.jpg"></a>
<a href="http://i92.photobucket.com/albums/l39/SpudStuff/CIMG3796.jpg" target="_blank">
<img src="http://i92.photobucket.com/albums/l39/SpudStuff/th_CIMG3796.jpg"></a>
<a href="http://i92.photobucket.com/albums/l39/SpudStuff/CIMG3794.jpg" target="_blank">
<img src="http://i92.photobucket.com/albums/l39/SpudStuff/th_CIMG3794.jpg"></a>
<a href="http://i92.photobucket.com/albums/l39/SpudStuff/CIMG3792.jpg" target="_blank">
<img src="http://i92.photobucket.com/albums/l39/SpudStuff/th_CIMG3792.jpg"></a>
<a href="http://i92.photobucket.com/albums/l39/SpudStuff/CIMG3791.jpg" target="_blank">
<img src="http://i92.photobucket.com/albums/l39/SpudStuff/th_CIMG3791.jpg"></a>
<a href="http://i92.photobucket.com/albums/l39/SpudStuff/CIMG3790.jpg" target="_blank">
<img src="http://i92.photobucket.com/albums/l39/SpudStuff/th_CIMG3790.jpg"></a>
<a href="http://i92.photobucket.com/albums/l39/SpudStuff/CIMG3787.jpg" target="_blank"><img src="http://i92.photobucket.com/albums/l39/SpudStuff/th_CIMG3787.jpg"></a>
<a href="http://i92.photobucket.com/albums/l39/SpudStuff/CIMG3785.jpg" target="_blank">
<img src="http://i92.photobucket.com/albums/l39/SpudStuff/th_CIMG3785.jpg"></a>
<a href="http://i92.photobucket.com/albums/l39/SpudStuff/CIMG3784.jpg" target="_blank">
<img src="http://i92.photobucket.com/albums/l39/SpudStuff/th_CIMG3784.jpg"></a>
Gonna be getting a paint job soon!
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Unread postAuthor: Recruit » Fri Dec 15, 2006 3:41 am

Nice good and clean what color you thinking about?
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Unread postAuthor: MrCrowley » Fri Dec 15, 2006 4:09 am

wow thats a pretty awesome cannon you got their :lol: How much have you taken it up to yet? Any damage pics or do you know how far it shoots?
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Unread postAuthor: schmanman » Fri Dec 15, 2006 6:32 am

I like it, but the sprinkler valve appears to be hooked up to a 1/4 inch tee. If you had a a bigger tee, I think it would increase performance.
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Unread postAuthor: SpudStuff » Fri Dec 15, 2006 1:10 pm

No, that is a 1/2" tee and a 1.5" sprinkler valve. I am thinking blue/orange. I have take it to 35 PSI.
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Unread postAuthor: noname » Fri Dec 15, 2006 2:33 pm

Putting in a new spacer would be better than a piece of pipe, but nice nonetheless.
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Unread postAuthor: SpudStuff » Fri Dec 15, 2006 5:03 pm

I used the pipe because it was the closest thing I could find at that monent. I will change it to a nice piece of wood at a later point.
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Unread postAuthor: Bluetooth » Fri Dec 15, 2006 5:11 pm

Thats an awesome gun! Why is the chamber so short?
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Unread postAuthor: SpudStuff » Fri Dec 15, 2006 5:12 pm

It is 2 feet long!
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Unread postAuthor: ProfessorAmadeus » Fri Dec 15, 2006 5:39 pm

Oooh... You should get a golfball barrel. I like it.
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Unread postAuthor: squeaks » Fri Dec 15, 2006 5:49 pm

Ok, quick question, how much did the valve cost you to make, adding in price for parts you had lying around at home and discluding the exhaust valve system. A list of parts would be nice with the prices too, if it's not too much to ask.
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Unread postAuthor: Bluetooth » Fri Dec 15, 2006 5:58 pm

I mean compared to the 66" barrel 24" isn't that much.
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Unread postAuthor: ProfessorAmadeus » Fri Dec 15, 2006 6:00 pm

Yes but its four inch. That means a larger volume. You wouldnt need a four foot long chamber because thats just over kill and more time to fill it.
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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: squeaks » Fri Dec 15, 2006 6:05 pm

Think of it this way, the surface area of 3" pipe is 2.25pi whereas 4" pipe is 4pi. Therefor you need almost twice as much 3" pipe to equal what you have in 4". Yay math.
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Unread postAuthor: Bluetooth » Fri Dec 15, 2006 6:11 pm

Yeah I guess it makes sense now. If I was building it I would probably be pumping it up twice as long as you :lol: .
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