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My Project

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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Unread postAuthor: alkalineall » Sun Aug 27, 2006 10:59 am

Hey hey! I finally figured out how to reduce the filesize of my pics, so that I can post them. Here is my cannon, it is 4" chamber with 2" barrel. It uses a 3" cap as piston with a thick gummy sink gasket as a seal for the 2". The aluminum side rails and shoulder stock were bent/riveted together by me out of I think old retail display hardware. Turned out OK. The cannon works excellent. I originally had a spring behind piston, but scrapped it. I have only shot balls of tape thus far (indoor tests), they crush coffee cans quite nicely :twisted:
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Attachments
S3010141.JPG
trigger
S3010142.JPG
crappy full view pic
S3010140.JPG
S3010144.JPG
full view
Last edited by alkalineall on Sun Aug 27, 2006 11:33 am, edited 2 times in total.

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Unread postAuthor: Bluetooth » Sun Aug 27, 2006 11:03 am

Did u try to post pics in this post? If so they didnt work :( .
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Unread postAuthor: alkalineall » Sun Aug 27, 2006 11:08 am

Uhh yeah apparently unsuccesfully, can I edit them in?
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Unread postAuthor: Bluetooth » Sun Aug 27, 2006 11:09 am

Yeah i think so.
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Unread postAuthor: ProfessorAmadeus » Sun Aug 27, 2006 11:25 am

They work now. Can we get some side pics to fully admire the gun?
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Unread postAuthor: alkalineall » Sun Aug 27, 2006 11:35 am

Whew!, Hopefully thats better I'm sorry guys I'm an amateur at posting anything, I usually just hang out and devour info without contributing anything. :D
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Unread postAuthor: Flinchy » Sun Aug 27, 2006 12:01 pm

haha, yeah alot of people do that. anyways nice piston pneumatic. are the slates on the side of your cannon for support? or just for show?

-flinch
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Unread postAuthor: SpudStuff » Sun Aug 27, 2006 12:27 pm

Nice. Any specs on chamber/barrel size?
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Unread postAuthor: alkalineall » Sun Aug 27, 2006 12:36 pm

Well, they're for a couple things. In the future I'm going to mount this cheap airgun scope that I have, and I wanted the flat surface to attach the scope mount to. Also, I was worried about breaking my solenoid or fitting off of my sprinkler valve, so I extended the rails back past the valve. The rails also make the cannon less likely to roll on a tabletop or other flat surface. I'm doing away with the zip ties as soon as I feel like buying some of those cable clamps that fold around and then screw down flat. I also want to box in the area around the sprinkler valve with more aluminum pieces to afford it more protection. Me walking around with this thing is kind of like the Three Stooges bit with the ladder, know what I mean? It's hard to keep track of where both ends are and I've spent too much time on this to want to break off the 1" pipe or valve.
P.s. Spudstuff: The barrel is made of 2" sch.40 and is about six feet and the chamber is 4"sch.40 about 4 feet long. The piston is super simple its just a 3" cap that I glued a thick gummy sink gasket to with Goop. The valve is allowed to move back 2" when open. I figured that anything more than an inch of movement backward would pretty much remove any restriction to airflow. I haven't gone above 60 psi yet, and I can get two good shots out of a 50 psi fill.
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Unread postAuthor: Bluetooth » Sun Aug 27, 2006 2:01 pm

That things huge 10' long :twisted: .
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Unread postAuthor: singularity » Sun Aug 27, 2006 3:34 pm

you know you can just upload your pics to <a href="http://photobucket.com/">photobucket</a> that way you can keep them big (like the resolution) and just use the "Img" button to insert them
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be sure to check out my <a href="http://www.spudfiles.com/forums/ak-style-airsoft-vortex-gun-t10959.html">AK Styled Vortex Gun</a> and my <a href="http://www.spudfiles.com/forums/at-4-t9627.html">AT-4 Rocket</a>

upcoming projects... finalized clip fed BBMG and ball point pen sniper
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Unread postAuthor: Benny » Sun Aug 27, 2006 4:55 pm

Is this your first? because its a very very very clean looking piston cannon, What is the range with a potato?
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Join the spudshot forum!!!!!

F*ck the bunny... i got a fishy ><>

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Unread postAuthor: alkalineall » Sun Aug 27, 2006 7:21 pm

Thanks for the info Irwinner. I was wondering about something like that. I 'll give it a try. Glad you like it Benny, this is my first pneumatic, but I built many simple combustions in my teen years. I've always wanted to build a pneumatic, but gave up after not finding a valve back then. I haven't been able to do an outdoor test yet 'cause I live in a very congested residential area with uppity neighbors. I'm dying to give it a try with real ammo outdoors. I'll figure something out pretty soon or just stick the barrel out the window and let one go :twisted:
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Unread postAuthor: LynyrdSkynyrd » Mon Aug 28, 2006 12:21 am

i like the trigger. is it a shouldermount or what tho? seems kinda big if so
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Unread postAuthor: MrCrowley » Mon Aug 28, 2006 12:56 am

lol thats what me and my friends do, go on the deck let a potato rip onto a golf course and hide,lots of fun :twisted:

p.s Lynyrd skynyrd just so happens im listning to "Free Bird" right now :P
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