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SKC1 pneumatic copper sniper

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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SKC1 pneumatic copper sniper

Unread postAuthor: spudamine » Wed Nov 26, 2008 6:23 pm

Hi, I'm new here so I Thought I'd introduce myself with some of my work before bombarding people with questions. I put this together about a year ago so you won't see any state of the art cannonage here, but it's not a bad performing pneumatic, some people might have seen this before on UKSGC.

Gun stats
Chamber: 22mm copper
barrel: 1" thick walled aluminium
valve: 3/4" QEV
operating pressure :150psi

One of the more interesting features is the breach loader, I have managed to avoid the use of a pipe clip in here by using a thick walled barrel and threading the bolt directly into it.
the suppressor also works and probably took longer to built than the rest of the cannon put together, it can be screwed on and off of the barrel.
Finally, Ive been lurking around here long enough to know you guys like some damage pics, enjoy :)
http://uk.youtube.com/watch?v=0m52-bVbNJc
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Attachments
with supressor.JPG
cannon, with suppressor attached
skc1.JPG
suppressor removed
breech open.jpg
breech open
breech closed.jpg
breech closed
pilot setup.jpg
pilot setup
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Unread postAuthor: pocket » Wed Nov 26, 2008 7:34 pm

thats pretty nice just not a fan of copper pipe stocks needs wood. nice though
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Unread postAuthor: POLAND_SPUD » Wed Nov 26, 2008 11:37 pm

nice gun !

up the pressure a little bit... it can take 300 psi without any problems
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Unread postAuthor: spudamine » Thu Nov 27, 2008 3:03 am

Thanks, I'm a fan of bullpups myself, ok this isn't a real pullpup but the stock is fairly useful, being half of my chamber.
Poland_spud, I agree, the only thing that might cause problems would be the crappy blowgun but that needs replacing anyway. Unfortunately I currently have no way of getting up to 300 psi.
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Unread postAuthor: blind909 » Thu Nov 27, 2008 2:52 pm

Nice gun, and nice barrel extension. I say this because silencers are illegal, even if it is like yours on a spudgun. Even though it probably doesnt work, it is still ilegal, just warning you.
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Unread postAuthor: MrCrowley » Thu Nov 27, 2008 2:57 pm

blind909 wrote:Nice gun, and nice barrel extension. I say this because silencers are illegal, even if it is like yours on a spudgun. Even though it probably doesnt work, it is still ilegal, just warning you.

He's in the UK IIRC, so no, it's not illegal.


Edit: Oh and nice cannon. I remember seeing it on UKSGC awhile back, always have liked it. :)
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Unread postAuthor: jackssmirkingrevenge » Thu Nov 27, 2008 3:14 pm

spudamine wrote:Unfortunately I currently have no way of getting up to 300 psi.


I'm sure POLAND_SPUD will be more than happy to advise you on alternative uses for that fridge that you were going to throw out ;)

Very nice launcher by the way, and the damage video was much appreciated (though one small point, your "pcl thermoplastic round" looks like it would be more at home fired through one of these :D)

You really should look into higher pressures though.
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Unread postAuthor: Sticky_Tape » Thu Nov 27, 2008 3:57 pm

Sooo Jsr what were you doing looking through that website? Great gun keep up the good work.
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You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
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Unread postAuthor: spudamine » Thu Nov 27, 2008 4:26 pm

Even though it probably doesnt work

It works a bit, hard to say objectively how much, If you listen to the vid the first couple of shots fired without the 'barrel extension' have a noticably different tone to the other shots. I suspect there's more of a difference down range.

Very nice launcher by the way, and the damage video was much appreciated (though one small point, your "pcl thermoplastic round" looks like it would be more at home fired through one of these )

Those damned strings didn't do anything anyway :lol:

You really should look into higher pressures though.

I have a hankering to try a semi for my next pneumatic, so I'll be upgrading to CO2. This cannon was largely a test bed for different ammo, and I really like the saboted stuff, so any semi I make will have to be cartridge fed, should be interesting :)
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Unread postAuthor: twizi » Thu Nov 27, 2008 9:10 pm

love the bolt action myn always leaks any body now how to seal it
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Unread postAuthor: blind909 » Thu Nov 27, 2008 10:11 pm

twizi wrote:love the bolt action myn always leaks any body now how to seal it


O-rings my friend.
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Unread postAuthor: jackssmirkingrevenge » Fri Nov 28, 2008 8:32 am

spudamine wrote:any semi I make will have to be cartridge fed, should be interesting :)


I made something along those lines, coupled with a QEV it should work very well :)
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Unread postAuthor: Ragnarok » Fri Nov 28, 2008 8:43 am

MrCrowley wrote:He's in the UK IIRC, so no, it's not illegal.

Kind of a moot point really, given the legal nature of the cannon it's bolted to.
To use a Clarksonism - it's like adding a splash of orange juice to a pint of gin. It's still going to make you very very drunk!

I'm pretty sure I commented on this on UKSGC - and I doubt there will be much I can add by commenting again, but nice cannon anyway!
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Does that thing kinda look like a big cat to you?
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Unread postAuthor: Baldwin1993 » Fri Dec 12, 2008 4:55 pm

how did u conect ur bolt to ur barrel?
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Unread postAuthor: jitup » Fri Dec 12, 2008 5:15 pm

just so everyone knows, in the US silerncers are illegal, even if it is mounted to a rubberband launcher.

Nice cannon, good job.
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if you live in Ohio join the Ohio Spud Gun and BBMG Association at http://www.ohiosga.webs.com
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