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qev copper 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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cool or not?

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Total votes : 11
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qev copper cannon

Unread postAuthor: leeeeshad » Thu Mar 01, 2007 1:13 pm

my new copper qev cannon 99cm barrel, 76cm chamber, 3/4 qev (that and the 22mm to 3/4 bsp's from cornish) all 22mm ballvalve piloted with the idea of how to pilot it taken from jim/lsd's shotgun and will shot 150 pages into an argos catalog at 100psi


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Last edited by leeeeshad on Thu Apr 05, 2007 10:40 am, edited 2 times in total.
chubster wrote:how do you saw the head off the nail?

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Unread postAuthor: imablackskater » Thu Mar 01, 2007 1:50 pm

very nice very sleek i allways love a good copper gun
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Unread postAuthor: noname » Thu Mar 01, 2007 6:36 pm

Nice gun, but how does it shoot? The pilot leads to a dead end, as far as I can see.
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Unread postAuthor: Hotwired » Thu Mar 01, 2007 8:50 pm

If you get a pair of tweezers or a valve tool you can reach inside a schrader valve and unscrew the poppet valve.

What you're left with is essentially a tube and if you close the ballvalve before releasing the pump head the trigger port air is trapped.

Good stuff Leeshad :D
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Unread postAuthor: noname » Thu Mar 01, 2007 9:42 pm

Really? Hmm, I might have to see how that works sometime. So it's basically a shrader, but not one way, so it's like a quick connect in the form of a schrader valve, am I right?
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Unread postAuthor: Hotwired » Thu Mar 01, 2007 9:57 pm

Its just a hollow tube that can be connected to a pump once you've taken the valve bit out, I'm not entirely sure about quick connects (don't they have something to seal the end when its released?).
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Unread postAuthor: noname » Thu Mar 01, 2007 10:35 pm

OK, I thought so.
A male quick connect is just a hollow tube machined to fit inside female quick connects, which are sealed.
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Unread postAuthor: mark.f » Fri Mar 02, 2007 6:36 am

Great job leeeeshad. What pressures do you normally use this at? I use one of my marble guns, (1/2" QEV into a 1/2" type M copper barrel), routinely at 150 PSI and it almost sounds like a gunshot.

BTW, are you in any way related to the joannaardway of these forums? She said she had a brother who made a copper gun with compression fittings like that quite some time ago...
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Unread postAuthor: joannaardway » Fri Mar 02, 2007 10:07 am

No - leeshad isn't my brother.

My brother goes by many internet names, but the one that you're most likely to see is Ragnarok.

He hasn't built any cannons for a while, but you'll know about it when he builds the next one. It'll be (if he sticks to his designs) reasonably impressive.
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Unread postAuthor: leeeeshad » Sun Mar 04, 2007 3:09 pm

no , no relation, i use it at abought 110psi because thats as high as my pump goes, yer sounds like a gunshot so i need a silencer to use it in the garden, joannaardway, are you coming back onto uksgc?
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chubster wrote:how do you saw the head off the nail?

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Unread postAuthor: frankrede » Sun Mar 04, 2007 5:00 pm

Joannaardway is a girl?
If so thats awesome.

Btw, nice cannon
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Unread postAuthor: joannaardway » Mon Mar 05, 2007 4:28 am

I would have thought it had been fairly obvious!

Yes, I am one of the few of those rare female spudders.
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Unread postAuthor: WOW!! » Mon Mar 05, 2007 6:14 am

joannaardway wrote:I would have thought it had been fairly obvious!

Yes, I am one of the few of those rare female spudders.


Wow thats like 1-100,000


Anyways sweet cannon, looks really good, got a video?!
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Unread postAuthor: mark.f » Mon Mar 05, 2007 6:47 am

frankrede wrote:Joannaardway is a girl?


Gosh you're probably tired of answering that! :P That's, what, how many times I've heard that?

An innocent mistake, though, seeing as I can't find a legitimate reason for a forum member searching for another one's gender. :shock:
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Unread postAuthor: leeeeshad » Mon Mar 05, 2007 6:53 am

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chubster wrote:how do you saw the head off the nail?

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