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first cannon

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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is it a good first gun?

yes
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maybe
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no
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Total votes : 4
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first cannon

Unread postAuthor: dauphinoise potato » Fri Aug 03, 2007 7:43 am

Hey this is my first cannon it's a copper pneumatic one using a ball valve. It's all 15mm. I've taken it up to 160psi with my joe blow sports pump. To put the schrader valve in I stripped the rubber off in a drill, unscrewed the poppet sooldered it in and put teh poppet back. I t was my first go at soldering so don't be to harsh. The most damage I've ever done was a nut and bolt through 6 ply and 1/2innch mdf.


Stats

Chamber: 7 feet of 15mm

Barrel: 5 feet of 15mm

Valve: ball valve 15mm

Filling valve: tyre valve


Here's some pic's
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Attachments
gun.jpg
the cannon and the pump
Picture 091.jpg
Nail dart through metal bin
Picture 092.jpg
another view, the nail went about an inch into the wood and i got dad to yank it out whith some monkey wrenches
Picture 095.jpg
the filling corner
Picture 097.jpg
the ammo
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damage to the bin
Picture 098.jpg (33.68 KiB) Viewed 996 times
Picture 099.jpg
sheet of 6 ply at 36 feet
Picture 099.jpg (23.8 KiB) Viewed 996 times
Picture 100.jpg
the back of it
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Picture 101.jpg
another bit of ply 36 feet
Picture 101.jpg (22.75 KiB) Viewed 996 times
Picture 102.jpg
the back of the ply
Picture 102.jpg (33.28 KiB) Viewed 996 times
Picture 103.jpg
my target
Picture 103.jpg (25.46 KiB) Viewed 996 times
Picture 104.jpg
nail dart through ply
Picture 104.jpg (36.32 KiB) Viewed 996 times
It's all a bunch of tree huggin' hippie crap!
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Unread postAuthor: spud yeti » Fri Aug 03, 2007 7:49 am

WOW! :wav: :occasion5: :headbang: Thats so awesome I forgot to jump up and down... Yeah, its OK. Why the massive amounts of copper at the bottom though?
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really good quote/phrase here
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Unread postAuthor: spanerman » Fri Aug 03, 2007 7:53 am

very nice, but you could make the chamber with 22mm pipe for quite a bit more volume:) and iff possibale you could spring load the ball valve to speed up opening times!
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Unread postAuthor: dauphinoise potato » Fri Aug 03, 2007 8:11 am

spud yeti wrote:WOW! :wav: :occasion5: :headbang: Thats so awesome I forgot to jump up and down... Yeah, its OK. Why the massive amounts of copper at the bottom though?


I was originally going to buy a schrader that fits into a 22mmm endcap.


And spanerman, I got the stuff at homebase and they only sold 22mm copper in 30m lengths for £113...I probally will springload the valve[/quote]
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Unread postAuthor: spanerman » Fri Aug 03, 2007 8:14 am

are you in the uk? iff so check out http://www.uksgc.co.uk for sourcing uk parts...BES sells copper in small lenghts up to 54mm....http://www.bes.co.uk
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Unread postAuthor: dauphinoise potato » Fri Aug 03, 2007 8:17 am

spanerman wrote:are you in the uk? iff so check out http://www.uksgc.co.uk for sourcing uk parts...BES sells copper in small lenghts up to 54mm....http://www.bes.co.uk



Yeah i just joined, pete invited me.
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Unread postAuthor: spud yeti » Sat Aug 04, 2007 8:05 am

So how much did it cost you in the end?
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Unread postAuthor: dauphinoise potato » Sat Aug 04, 2007 12:35 pm

I think around 30 quid which is OK. I'm going to make a combustion next :wink:
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Unread postAuthor: al-xg » Mon Aug 06, 2007 3:53 am

I tried spring loading my first copper pneumatic, and it worked great and looked pretty cool too. But then i bent the ballvalve handle, and then got a QEV :wink:

Nice clean first pneumatic spudgun there.
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