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 66 users online :: 5 registered, 0 hidden and 61 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

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

The Team
Administrators
Global Moderators
global_moderators.png CS

Attempting to visually disect a valve

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

Unread postAuthor: Sticky_Tape » Tue Mar 11, 2008 1:34 pm

Yeah did you know that theair in a full scuba tank can fill a telephone both there is however many litres of air like 120 in one of those iff I am correct which I am about the telehone both thing.
  • 0

User avatar
Sticky_Tape
Brigadier General
Brigadier General
 
Posts: 1175
Joined: Thu Jan 31, 2008 6:35 pm
Location: Sydney, Nova Scotia, Canada.
Reputation: 0

Unread postAuthor: grumpy » Tue Mar 11, 2008 3:07 pm

it is easy to modify the qev so that you can have a fill conection in the chamber instead of the qev.
  • 0


grumpy
Captain
Captain
 
Posts: 331
Joined: Wed Sep 26, 2007 7:48 am
Location: tampa,fla.
Reputation: 0

Unread postAuthor: Sticky_Tape » Wed Mar 12, 2008 4:51 pm

maybe he used somthing similar to JSR s reciprocating piston but didn't have the pop off safety valve pop off automaticly and pulled it manually that would get rid of the problem of it going down to a certain pressure that the auto-matic pop off wouldn't pop off you never know he might have seen it on here and modify it.
  • 0

User avatar
Sticky_Tape
Brigadier General
Brigadier General
 
Posts: 1175
Joined: Thu Jan 31, 2008 6:35 pm
Location: Sydney, Nova Scotia, Canada.
Reputation: 0

Unread postAuthor: POLAND_SPUD » Wed Mar 12, 2008 5:05 pm

QEVs can withstand pressures above 400 psi without any problems...
  • 0

User avatar
POLAND_SPUD
Chief of Staff
Chief of Staff
 
Posts: 5405
Joined: Sat Oct 13, 2007 4:43 pm
Country: Israel (il)
Reputation: 10

Unread postAuthor: Maniac » Wed Mar 12, 2008 5:19 pm

POLAND_SPUD wrote:QEVs can withstand pressures above 400 psi without any problems...
What Qevs can do that ive never seen one. Maybe the body but not the dighram
  • 0

Coodude26 wrote:
People who laugh really hard at stuff that pisses you off/you getting hurt, who then say "I'm sorry, I can't stop" but you know they easily could.

Mr.C: That's not as easy as you think. It's like me kicking you in the balls and telling you to stop crying.
User avatar
Maniac
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 496
Joined: Tue Oct 23, 2007 5:55 pm
Location: Right behind you
Reputation: 0

Unread postAuthor: clide » Wed Mar 12, 2008 9:02 pm

jackssmirkingrevenge wrote:To get so many shots out of a tiny chamber, there has to be a pretty high pressure in that tube.


The last time that video was posted I think most people came to the conclusion that there is an air line behind his arm that is recharging the gun for each shot. That's the way it seems to me as well.
  • 0

<a href="http://gbcannon.com" target="_blank"><img src="http://gbcannon.com/pics/misc/pixel.png" border="0"></a>latest update - debut of the cardapult

clide
Donating Member
Donating Member
 
Posts: 785
Joined: Sun Mar 06, 2005 3:06 am
Location: Oklahoma, USA
Reputation: 0

Unread postAuthor: Rokmonkey » Wed Mar 12, 2008 9:38 pm

Then you would see a hose coming out of the top of the chamber, check the design, the fill valve is at the top.
  • 0


Rokmonkey
Corporal
Corporal
 
Posts: 73
Joined: Wed Feb 28, 2007 10:03 pm
Reputation: 0

Sponsored

Sponsor
 


Unread postAuthor: Sticky_Tape » Wed Mar 12, 2008 9:48 pm

I'm pretty sure the top one is a pop off safety valve and the one at the back is some kind of manual pressure release valve that is conected to a quick release that could be hooked up to a hose.
  • 0

You can tell how awesome a cannon is by the pressure used.
http://www.spudfiles.com/forums/high-pr ... 12803.html
xnt rnm ne z ahtbg
User avatar
Sticky_Tape
Brigadier General
Brigadier General
 
Posts: 1175
Joined: Thu Jan 31, 2008 6:35 pm
Location: Sydney, Nova Scotia, Canada.
Reputation: 0

Unread postAuthor: grumpy » Thu Mar 13, 2008 7:00 am

does anyone here know what a slide check valve is? cause that is what he is using. if you pay attention to the video you can see him sliding the sleave back and forth
  • 0


grumpy
Captain
Captain
 
Posts: 331
Joined: Wed Sep 26, 2007 7:48 am
Location: tampa,fla.
Reputation: 0

Unread postAuthor: Ragnarok » Thu Mar 13, 2008 7:22 am

@Grumpy: Yes - I do, but they're more commonly called sleeve valves in industry. Slide valve is the name they're given by paintballers.

For anyone that wants to achieve semi-auto or rapid fire with a pilot filled valve, they are a godsend. I use one on HEAL, but I had to add my own check valve: Red thing in the middle with a jubilee/hose clip around it to act as a trigger

I originally picked up mine at Airlines Pneumatics UK here:
http://www.airlines-pneumatics.co.uk/we ... de=S070104

But for those in the US, McMaster-Carr has them. Search for cat number 4622K33, cat page 447 (same page as their air tank Schrader valves by coincidence)
Make sure you get the air variant, the Water/Oil/Gas variants won't vent to atmosphere.
  • 0

Does that thing kinda look like a big cat to you?
User avatar
Ragnarok
Chief of Staff
Chief of Staff
 
Posts: 5339
Joined: Tue Dec 19, 2006 8:23 am
Location: The UK
Reputation: 8

Previous

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'