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 80 users online :: 4 registered, 0 hidden and 76 guests


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

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

The Team
Administrators
Global Moderators
global_moderators.png CS

QEV+popoff experiment - update: NOW WITH AMMO!

Built a pneumatic cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
Sponsored 
  • Author
    Message

Unread postAuthor: inonickname » Thu Apr 02, 2009 6:38 am

Subsonic, a QEV is simply a commercially manufactured piston (several, but few are diaphragm) valve manufactured with tight tolerances and a small pilot volume. A pop-off may not have enough flow to actuate a homemade valve, so why not try?

Niceness...Lets see you get a supersonic bbmg onto an airsoft field (david)
  • 0

PimpAssasinG wrote:no im strong but you are a fat gay mother sucker that gets raped by black man for fun
User avatar
inonickname
Lieutenant General
Lieutenant General
 
Posts: 2606
Joined: Sun Dec 07, 2008 3:27 am
Reputation: 0

Unread postAuthor: SPG » Thu Apr 02, 2009 8:04 am

Ok, I know it's cheaky as hell, but given that it's currently made from bought in parts I don't suppose you could do a parts list for those of us (me) too dumb to work out which bit is which.
  • 0

<A HREF="http://www.paisleypeking.co.uk"><IMG BORDER="0" WIDTH="400" HEIGHT="64" SRC="http://www.paisleypeking.co.uk/images/signature.gif"></A>
User avatar
SPG
Major
Major
 
Posts: 364
Joined: Thu Feb 09, 2006 11:55 am
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Thu Apr 02, 2009 8:32 am

SPG wrote:I don't suppose you could do a parts list for those of us (me) too dumb to work out which bit is which.


Have you been drinking?

Le QEV, le pop-off valve (preferably adjustable), something to attach the two, then something to attach the QEV to your chamber on one end and your breech on the other.

Depends what you have available I suppose.
  • 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: SPG » Thu Apr 02, 2009 8:37 am

Errr, well oddly enough yes.

I just thought given that the lot was probably all ordered, he could whack up the exact specs in a trice, and we could all nip out and buy them, or hey if they were ordered on-le-line, I could order them from ze same place.

Red or white btw?
  • 0

<A HREF="http://www.paisleypeking.co.uk"><IMG BORDER="0" WIDTH="400" HEIGHT="64" SRC="http://www.paisleypeking.co.uk/images/signature.gif"></A>
User avatar
SPG
Major
Major
 
Posts: 364
Joined: Thu Feb 09, 2006 11:55 am
Reputation: 0

Unread postAuthor: psycix » Thu Apr 02, 2009 11:11 am

What? A parts list? For something this simple?
I covered the main components in the video, and you can imagine the rest I suppose.
I didnt order it online, but from BTB, which is in the video description.

------------------

Oh and did you know "it" also works with THIS GUN? 8)




Stay tuned... :D
  • 0

Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

Spudfiles steam group, join!
User avatar
psycix
Donating Member
Donating Member
 
Posts: 3684
Joined: Mon Jun 25, 2007 7:12 am
Location: The Netherlands
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Thu Apr 02, 2009 1:55 pm

psycix wrote:Stay tuned... :D


Have you tried single shots in a longer before you build a mag to see what the power's like?
  • 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: psycix » Thu Apr 02, 2009 3:41 pm

  • 0

Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

Spudfiles steam group, join!
User avatar
psycix
Donating Member
Donating Member
 
Posts: 3684
Joined: Mon Jun 25, 2007 7:12 am
Location: The Netherlands
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: jackssmirkingrevenge » Thu Apr 02, 2009 3:43 pm

Oh go on, simple Tee magazine, fire something!

I think that chamber is far too big for the valve though, looked/sounded better with the smaller one.
  • 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: Brian the brain » Thu Apr 02, 2009 4:34 pm

He needs a big hopper I tell you...
That thing will rip just about anything to shreds!
  • 0

Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
User avatar
Brian the brain
Moderator
Moderator
 
Posts: 3494
Joined: Mon Dec 05, 2005 2:06 am
Location: Holland
Country: Netherlands (nl)
Reputation: 29

Unread postAuthor: SubsonicSpud » Thu Apr 02, 2009 6:33 pm

The 1/2 definitely is going to chew a lot of air. Time to get a really BIG Air tank, or trailer mounted diesel compressor unit :twisted:
  • 0

User avatar
SubsonicSpud
2nd Lieutenant
2nd Lieutenant
 
Posts: 202
Joined: Sat Jan 03, 2009 8:55 am
Location: Australia
Reputation: 0

Unread postAuthor: psycix » Sat Apr 04, 2009 7:43 am

The tnak is already really big (for a 30 bar resevoir.)
As you just saw, I can get more 16mm shots out of it then a normal mag can hold.

A trailer mounted diesel compresor? I'll ask that for my birthday haha.
  • 0

Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

Spudfiles steam group, join!
User avatar
psycix
Donating Member
Donating Member
 
Posts: 3684
Joined: Mon Jun 25, 2007 7:12 am
Location: The Netherlands
Reputation: 0

Unread postAuthor: c11man » Sat Apr 04, 2009 7:54 am

kind of off topic but how do you attach a ball valve to the original valve on the fire extinguisher? also how long does it take to fill it up?
  • 0

User avatar
c11man
Brigadier General
Brigadier General
 
Posts: 783
Joined: Fri Feb 06, 2009 4:37 pm
Location: Wisconsin, USA
Country: United States (us)
Reputation: 0

Unread postAuthor: psycix » Sat Apr 04, 2009 8:43 am

There are 1/4" threads on the FE, which is pure luck.
It takes a few minutes with my fridgy.

You know, I am in doubt. I first wanted to make a BFWB for the BB barrel, but the smallness is just annoying. I may aswell just skip it and build one for the marbles.
I cant cram more marbles into a tubular mag then the FE can give more shots anyway.

So what do you guys think? BB's first or marbles?

BTW: An inline mag for bb's would need to be 4,20 m long if I wanted to carry as much BB's as I can get shots out of the FE.
For marbles it would need to be 1,60 m.
I may need to go hopper, OR "revolving tubular magazines" (a new idea of me, more information later).
  • 0

Till the day I'm dieing, I'll keep them spuddies flying, 'cause I can!

Spudfiles steam group, join!
User avatar
psycix
Donating Member
Donating Member
 
Posts: 3684
Joined: Mon Jun 25, 2007 7:12 am
Location: The Netherlands
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sat Apr 04, 2009 8:55 am

Given your 16mm porting, I would go for marbles. Wouldn't bother with a bolt either, why not just use a Tee mag and hopper?
  • 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: Brian the brain » Sat Apr 04, 2009 9:47 am

that would be easiest....and there would be no parts to jam either....

but marbles aren't uniform...
  • 0

Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
User avatar
Brian the brain
Moderator
Moderator
 
Posts: 3494
Joined: Mon Dec 05, 2005 2:06 am
Location: Holland
Country: Netherlands (nl)
Reputation: 29

PreviousNext

Return to Pneumatic Cannon Database

Who is online

Registered users: Bing [Bot], Google Adsense [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'