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surfbum
PostPosted: 04/13/2007 22:23 PM    Post subject: Reply with quote

Specialist
Specialist

Joined: 03 Apr 2007
Posts: 45
95.39 Spud Bux

if i use a sleeve valve, it says when its closed it vents pressure to the atmosphere, so wouldn't it just empty the CO2 tank to the atmosphere if i close the valve?
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keep_it_real
PostPosted: 04/13/2007 22:25 PM    Post subject: Reply with quote

Captain
Captain

Joined: 23 Dec 2006
Posts: 325
513.73 Spud Bux

It works like this: when its closed, it vents the piston valve side but blocks the co2 side and when its open it lets co2 through into the chamber.
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surfbum
PostPosted: 04/13/2007 22:32 PM    Post subject: Reply with quote

Specialist
Specialist

Joined: 03 Apr 2007
Posts: 45
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ok so when the slide valve moved, it would seal the CO2 side and fire the cannon at the same time, correct?
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keep_it_real
PostPosted: 04/13/2007 22:39 PM    Post subject: Reply with quote

Captain
Captain

Joined: 23 Dec 2006
Posts: 325
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yup thats right.
Also about the change you made for the qev. It's not going to look very good or be structurally strong with three elbows like that. If you think you can do it, make a piston valve. If not maybe a sprinkler valve.
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goathunter
PostPosted: 04/14/2007 11:15 AM    Post subject: Reply with quote

The avatarless one
Colonel

Joined: 15 Feb 2007
Posts: 686
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If you have access to a machine shop and CNC stuff try building an alias MKX launcher look alike.I haven't been able to take one apart but I believe they are a coaxial.They seem easy to build.I would try, but lack a verticall mill to cut the base.http://www.bp-usa.com/weaponry.htm.Talk to someone at your paintball field.The local scenario team may have one that you can look at.
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surfbum
PostPosted: 04/14/2007 11:28 AM    Post subject: Reply with quote

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goathunter wrote:
If you have access to a machine shop and CNC stuff try building an alias MKX launcher look alike.I haven't been able to take one apart but I believe they are a coaxial.They seem easy to build.I would try, but lack a verticall mill to cut the base.http://www.bp-usa.com/weaponry.htm.Talk to someone at your paintball field.The local scenario team may have one that you can look at.


thats actually exactly what i am trying to do, unfortunately there are no diagrams and no one i know has one, if you have an idea of how it works, would you mind posting up a diagram?

if i were to make the QEV set up i would put the whole think in a sleeve of Aluminum or something to strengthen it
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Orpackrat
PostPosted: 04/14/2007 14:52 PM    Post subject: Reply with quote

2nd Lieutenant
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Joined: 19 Mar 2007
Posts: 236
35.67 Spud Bux

I made an inline launcher for scenario paintball a while back but it is somewhat heavy, all metal internals, Co2 powered, operates on 800+ PSI, 2"PVC case, internal 9oz Co2 tank, duel ball valves.

http://www.spudfiles.com/forums/my-first-and-second-continous-air-laun chers-t6814.html

Second picture.
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goathunter
PostPosted: 04/14/2007 20:19 PM    Post subject: Reply with quote

The avatarless one
Colonel

Joined: 15 Feb 2007
Posts: 686
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Surfbum,I'm having trouble getting the paint document to post.I'll get it on the thread as soon as I can. Hey fellas how do I post a paint document?I know I sound like an idiot, oh well I can't figure out how to do it.
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goathunter
PostPosted: 04/14/2007 21:14 PM    Post subject: Reply with quote

The avatarless one
Colonel

Joined: 15 Feb 2007
Posts: 686
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This is how I believe it goes.To get an understanding of how the valve works go here: http://www.spudfiles.com/spud_wiki/index.php?title=Piston_valve
[/img]
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surfbum
PostPosted: 04/15/2007 12:14 PM    Post subject: Reply with quote

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Joined: 03 Apr 2007
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so ive decided to do a coaxial
what is the best method to dump the the air behind the piston to fire the cannon?
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iPaintball
PostPosted: 04/15/2007 12:48 PM    Post subject: Reply with quote

Colonel
Colonel

Joined: 04 Mar 2007
Posts: 713
971.42 Spud Bux

It depends on the size. I suppose a blogun could be used for pistons under 3/4", ball valves for 3/4" to 1.5", and sprinkler valves and QEVs for anything over 1.5".
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