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QD copper barrel?

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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QD copper barrel?

Unread postAuthor: sharpshooter11000 » Fri Oct 21, 2011 5:12 am

Does anyone know a type of fitting for 22mm copper pipe that would let me detach the barrel without unscrewing compression fittings? Something kind of like the ones you get on air hoses for attaching tools etc.
Thanks :)
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Unread postAuthor: jackssmirkingrevenge » Fri Oct 21, 2011 5:16 am

http://en.wikipedia.org/wiki/Camlock_%2 ... fitting%29

quick connects like those on air hoses will be too restrictive
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Unread postAuthor: sharpshooter11000 » Fri Oct 21, 2011 5:20 am

Hmm... Can you think of anything like that but less restrictive? It's so that I can attach different sized barrels
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Unread postAuthor: Zeus » Fri Oct 21, 2011 5:22 am

Camlocks and unions are the best you'll get, unless you machine your own QD.
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/sarcasm, /hyperbole
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Unread postAuthor: sharpshooter11000 » Fri Oct 21, 2011 5:24 am

I was thinking I could get someting machined that's kind of like a straight compression fitting but threaded in the middle
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Unread postAuthor: Zeus » Fri Oct 21, 2011 5:28 am

JSR made a pneumatic ballistic knife based around a collar lock akin to a QD, that would be a good start.

And a pretty version here.
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Unread postAuthor: sharpshooter11000 » Fri Oct 21, 2011 5:39 am

Wow, that's amazing! I think I'll modify something to make a screw on barrel attachment. I'm definitely going to try a ballistic knife first! Thanks for your help and quick replies guys! :wink:
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Unread postAuthor: jhalek90 » Fri Oct 21, 2011 8:44 am

get a threaded union.
There will be no need to unscrew the compression fitting.

Also, you could throw a burst disk in the union sometimes, when you need a little extra "oomph"
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Unread postAuthor: sharpshooter11000 » Fri Oct 21, 2011 11:52 am

So does that screw on to the compression fitting?
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