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semi auto .45 cal shell shooter

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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do you llike the modifications?

yes, keep going in that direction
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69%
yes
2
15%
no
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Total votes : 13
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semi auto .45 cal shell shooter

Unread postAuthor: schmanman » Tue Nov 14, 2006 9:44 am

the bb rifle, but modified (before you guys wig out on me, nobody looks at the old thread, and I am harming nothing by making a new one)
well, anyway, the barrel is a internally threaded steel pipe, two of them, that were originally meant to hang a light fixture. we recently redid our kitchen, and they were left over, and my dad gave them to me. they were held together by internal steel 1/4 inch nipples, and those would have blocked any ammo from coming out, so I searched for something to hold it together. I ended up using some rigid plastic tube from the inside of a free fire extinguisher. so then I built the breech. the rigid plastic tube was hard to get on, so it would sure not slide. I looked for another material. I found some 1/2 inch, grey electrical conduit that fit nearly prefect, so I used that. The carbon fiber handle on the breech is a bike bar end (me and my dad mountain bike). The modification that allowed it to become semi-auto is the tee coming off the side, with the 1/4 inch ball valve and quick disconnect nipple, and the gauge. I'll try to get a pic that actually shows the whole gun up later.
(sorry the pics are so crappy :oops: ) click the pictures to enlarge.

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an overview

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the carbon fiber breech handle

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breech slid forward viewed from the front...
(That's my compressor in the background)

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and from the side

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a 3/4 view from the back

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the main modification that allows it to be semi-auto


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the air chamber

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what you see when you are holding the gun

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a crappy pic of the muzzle thingy (for aesthetics)
that's one end of my workshop, notice the ozzfest sticker on the big metal cabinet.
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Last edited by schmanman on Tue Nov 14, 2006 5:33 pm, edited 1 time in total.
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Unread postAuthor: schmanman » Tue Nov 14, 2006 11:14 am

anyone?
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Unread postAuthor: CpTn_lAw » Tue Nov 14, 2006 1:51 pm

this is veru great even if i kinda don't see the semi auto principe....It is a piston gun, so you certainly get devil performances???!!!!! :twisted: :twisted:
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Unread postAuthor: schmanman » Tue Nov 14, 2006 2:00 pm

true, It is kinda not semi auto. It is semi auto rate of fire wise. with the spring loaded mag, It will be semi auto, since It will require no loading.

I can get a really really high rate of fire out of this thing. :twisted:
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Unread postAuthor: MrCrowley » Tue Nov 14, 2006 2:05 pm

Oh, I remebr this gun i liked the desgin and how you fire it/hold it as the blow gun is at the back,thought it was quite cool and different,nice job.
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Unread postAuthor: schmanman » Tue Nov 14, 2006 2:28 pm

how do you like the carbon fiber breech? 8)

I got the camera to work right. here's some better pics.

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Unread postAuthor: MrCrowley » Tue Nov 14, 2006 2:57 pm

in the last pic the barrel looks slightly bent lol.
the breach is pretty sweet with the carbon fibre makes it look semi-auto in the last pic
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Unread postAuthor: schmanman » Tue Nov 14, 2006 8:29 pm

that was what I was going for. it's not bent when you see it in person. I will finish the spring loaded mag within the next two weeks. tomorrow, the tee for the swat gun arrives, so I need to reassemble that thing before I work on the mag any more.
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Unread postAuthor: experament_u2 » Wed Nov 15, 2006 1:43 am

its a kool gun i remember the old one to 8)
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Unread postAuthor: schmanman » Wed Nov 15, 2006 4:32 pm

thanks. should I give it a black paint job?
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Unread postAuthor: Infernal2 » Wed Nov 15, 2006 6:56 pm

Nice cannon, but that wall mounted grinder... even cooler.
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Unread postAuthor: schmanman » Wed Nov 15, 2006 8:43 pm

oh, that? that's baldor buffer. great for polishing stuff. do have a bench grinder, an angle grinder, drills, access to a drill press, lathe,etc. I will be getting an acetylene torch soon. the buffer was free, from my grandpa. I use it to polish old stuff, and I will probably end up polishing this gun, since it's steel.
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Unread postAuthor: )DEMON( » Thu Nov 16, 2006 2:24 am

Looks like someone is into metal cannons now :D Great work, you hook that upto your compressor right? You should polish everything until it shines and you can see your reflection. Like those cars 8) Very nice set up.
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Unread postAuthor: schmanman » Mon Nov 20, 2006 5:21 pm

sure, I am going to polish it with the buffer in the background. I do hook it up to my compressor
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Unread postAuthor: King_TaTer » Mon Nov 20, 2006 7:51 pm

i agree it does look kool. it will look a whole lot better with a polishing job and/or a paint job. also i like that gander mountain hat lol... pretty sweet

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