Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 75 users online :: 3 registered, 1 hidden and 71 guests


Most users ever online was 155 on Mon Aug 15, 2016 1:40 am

Registered users: Bing [Bot], Google [Bot], Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

QEV Burst-Disc cannon idea

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.
Sponsored 
  • Author
    Message

QEV Burst-Disc cannon idea

Unread postAuthor: Infernal Maveric » Thu Nov 01, 2007 5:36 pm

I was looking at Rag's "HEAL" gun and was inspired, and decided to draw up plans for a future gun. I decided that a QEV actuating another QEV would have better opening times than with just using a blowgun.
The burst-disc idea came from some thinkings in college today. The "bullet" case is just a flanged copper tube with foil glued to the flange, or some plastic held in place at one end, and for the other end there may not need to be a 2nd disc, but it would mean the ammo wouldn't roll out if it wasn't a super tight fit.

Picture:
Image

Improvements/comments?

EDIT: Link to the concept of the shell/breech mechanism: http://www.maj.com/gallery/Infernal-Maveric/Spudgun/shell.jpg
  • 0

User avatar
Infernal Maveric
2nd Lieutenant
2nd Lieutenant
 
Posts: 220
Joined: Sat Oct 08, 2005 3:41 pm
Reputation: 0

Unread postAuthor: ALIHISGREAT » Thu Nov 01, 2007 5:47 pm

one flaw in the design... you would get a face full of air :lol: other than that i think it would work. however how much more power does a qev pilot give?
  • 0

User avatar
ALIHISGREAT
Major General
Major General
 
Posts: 1779
Joined: Sat Aug 25, 2007 6:47 pm
Location: UK
Reputation: 0

Unread postAuthor: pyromaniac » Thu Nov 01, 2007 5:47 pm

I think a QEV actuating another QEV would be a waste of money and a QEV.

I'm also confused by the double breach is there any other use for the disk besides keeping the ammo in?

EDIT: i dont think useing a QEV for a pilot would give that much mroe power.

double edit: i didnt know there was shells i get it now.
  • 0

:pottytrain3:
User avatar
pyromaniac
Brigadier General
Brigadier General
 
Posts: 805
Joined: Tue Feb 27, 2007 7:18 pm
Location: MO
Reputation: 0

Unread postAuthor: Infernal Maveric » Thu Nov 01, 2007 6:01 pm

@ALIHISGREAT - I have no idea how much more power I would gte because of the fast opening times but it would be more than with a ball valve/blowgun. Im cool with a face full of air, as the pilot to the main QEV would be very minimal, so a cool breeze from the pilot is cool.

@pyromaniac - I have 6, 12mm QEVs at my disposal, so it's at no extra cost to me. The burst-disc on the shell would provide a bit more added power (I hope) and add to the noise level of the gun.
  • 0

User avatar
Infernal Maveric
2nd Lieutenant
2nd Lieutenant
 
Posts: 220
Joined: Sat Oct 08, 2005 3:41 pm
Reputation: 0

Unread postAuthor: PVC Arsenal 17 » Thu Nov 01, 2007 6:02 pm

pyromaniac wrote:I think a QEV actuating another QEV would be a waste of money and a QEV.


This.

QEV's are ridiculously sensitive. They can literally pilot if there's a small leak in the threads.
  • 0


PVC Arsenal 17
Major General
Major General
 
Posts: 1762
Joined: Mon Mar 27, 2006 4:18 pm
Location: United States
Reputation: 1

Unread postAuthor: Infernal Maveric » Thu Nov 01, 2007 6:13 pm

Because of the sensitivity of QEVs, I would like to see the added power to a gun with a QEV as a pilot. I will do tests of course for comparisons when it gets made.
  • 0

User avatar
Infernal Maveric
2nd Lieutenant
2nd Lieutenant
 
Posts: 220
Joined: Sat Oct 08, 2005 3:41 pm
Reputation: 0

Unread postAuthor: Ragnarok » Thu Nov 01, 2007 6:40 pm

Interesting. It'll certainly work, but exactly how much extra power you'll get will be an unknown, at least until you test it. You could estimate with GGDT, but GGDT wasn't designed for quite that arrangement.

Of course, you could pilot the 2nd QEV with a 3rd as well, but that would be getting stupid. I have considered it before though. I had to fight myself to avoid putting a 1/4" QEV onto HEAL to pilot the 1/2" one.

What drawing package do you use?
  • 0

User avatar
Ragnarok
Chief of Staff
Chief of Staff
 
Posts: 5339
Joined: Tue Dec 19, 2006 8:23 am
Location: The UK
Reputation: 8

Sponsored

Sponsor
 


Unread postAuthor: Infernal Maveric » Thu Nov 01, 2007 7:09 pm

A 3rd QEv would just look silly, and it would need to be all awkward because of the chamber.

I use Microsoft™ Paint© for all my drawn images, just that I take a little more time than the average Joe when comming up with concept sketches on Paint.
  • 0

User avatar
Infernal Maveric
2nd Lieutenant
2nd Lieutenant
 
Posts: 220
Joined: Sat Oct 08, 2005 3:41 pm
Reputation: 0

Unread postAuthor: Ragnarok » Thu Nov 01, 2007 8:22 pm

Paint? God-damn, that must have taken ages.
  • 0

User avatar
Ragnarok
Chief of Staff
Chief of Staff
 
Posts: 5339
Joined: Tue Dec 19, 2006 8:23 am
Location: The UK
Reputation: 8

Unread postAuthor: Marco321 » Thu Nov 01, 2007 8:31 pm

I actually made a gun which was a coaxial actuated by another piston valve, actuated by a blowgun. It didn't have much power increase, hardly a difference between a sprinkler as the pilot. What I'm getting at is 2 QEVs may be an overkill, but as you said you have 6 lying around, i can't see any reason why you shouldn't use 2 QEVs.

I hope to see it completed with damage pics soon. Looks like a good design.
  • 0

Failure to plan is planning to fail.

The 7 P's - Proper Prior Preparation Prevents Piss Poor Performance
User avatar
Marco321
Colonel
Colonel
 
Posts: 540
Joined: Tue May 15, 2007 2:56 am
Location: Sydney, Australia
Reputation: 0

Unread postAuthor: benstern » Thu Nov 01, 2007 8:55 pm

performance +0.9
cool value +47
  • 0

User avatar
benstern
Donating Member
Donating Member
 
Posts: 909
Joined: Wed Sep 21, 2005 8:24 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Fri Nov 02, 2007 12:07 am

Ragnarok wrote:Paint? God-damn, that must have taken ages.


with the wonders of copy-paste and flip-rotate, less than you think ;)
  • 0

User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: Infernal Maveric » Fri Nov 02, 2007 2:40 am

In all it took me about 15 minutes to draw it all up. Not that long really.

I will be getting a phone call from a mobile phone shop today, and have an interview for a Jewelery shop on tuesday, so if I get either of those jobs, this gun will be made within the next few months.
  • 0

User avatar
Infernal Maveric
2nd Lieutenant
2nd Lieutenant
 
Posts: 220
Joined: Sat Oct 08, 2005 3:41 pm
Reputation: 0

Unread postAuthor: Novacastrian » Mon Nov 05, 2007 6:30 pm

It could also be blinged out nicely too, if you get the job at the jewelers :lol:
  • 0

America, the greatest gangster of all time. With 200 million odd foot soldiers at it's whim and call.
When you fill your car with refined oil remember that it has been paid for with blood and guts, some from your own countrymen, most not.

Novacastrian
Major General
Major General
 
Posts: 1604
Joined: Sat Aug 11, 2007 6:59 pm
Reputation: 0

Unread postAuthor: Infernal Maveric » Mon Nov 05, 2007 6:34 pm

I have the interview tommorow, so I hop it all goes well. And yes, if i get the job, expect to see the whole thing looking alot cleaner and shineier than my Gauss Lightning 0.5 is at the moment.
  • 0

User avatar
Infernal Maveric
2nd Lieutenant
2nd Lieutenant
 
Posts: 220
Joined: Sat Oct 08, 2005 3:41 pm
Reputation: 0

Return to Pneumatic Cannon Discussion

Who is online

Registered users: Bing [Bot], Google [Bot], Yahoo [Bot]

Reputation System ©'