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 52 users online :: 4 registered, 0 hidden and 48 guests


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

Registered users: Bing [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

qev and slide valve semi auto?

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: Goats spudz » Sat Nov 26, 2011 7:04 am

Crna Legija wrote:
Goats spudz wrote:Hey jsr on your popoff and slide-check are they 1/4" bsp?


jackssmirkingrevenge wrote: the thread is a 1/4"pipe thread.


id say so
BSP or NPT?
  • 0

Where's my Chuck key?

Goats spudz
Lieutenant Colonel
Lieutenant Colonel
 
Posts: 458
Joined: Tue Aug 02, 2011 12:31 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Mon Nov 28, 2011 11:49 am

Goats spudz wrote:BSP or NPT?


My fittings are BSP, can't say how it fits with NPT.

QEV arrived today, very smart and chamber/pilot threads are perfectly compatible with the other fittings I've bought, which makes them 1/4" BSP.

The "barrel" end as far as I can tell is 3/8" BSP.

I'm going to make a small chamber and have some fun with these parts, if all goes well I'll do a little Volkshalbautomatische write-up :)
  • 0

Attachments
chqevbox.jpg
chqevparts.jpg
chqevcomp1.jpg
chqevcomp2.jpg
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: wyz2285 » Mon Nov 28, 2011 1:45 pm

good for you jack :D
that qev looks really simple
  • 0

User avatar
wyz2285
Major General
Major General
 
Posts: 2244
Joined: Sat Mar 06, 2010 7:50 am
Location: Porto, Portugal
Country: Portugal (pt)
Reputation: 12

Unread postAuthor: warhead052 » Mon Nov 28, 2011 2:14 pm

Jack, if you don't mind my asking, can you measure the dimensions of the qev? Like the width, height, and length?
  • 0


warhead052
Major General
Major General
 
Posts: 1769
Joined: Mon Mar 21, 2011 5:41 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Mon Nov 28, 2011 2:19 pm

wyz2285 wrote:that qev looks really simple


Aren't they all ;)

can you measure the dimensions of the qev? Like the width, height, and length?


It's all in the specs:

Product Name: Quick Exhaust Valve
Model: QE-02
Gold Tone Port Diameter: 16mm/ 5/8"
Inlet/ Outlet Ports Diameter: 12.5mm/ 1/2"
Flow Medium: Air
Operating Pressure: 0-0.8 kgf/cm<sup>2</sup>
Working Temperature: 0 - 60°C
Total Size: 52 x 36 x 28mm/ 2" x 1.4" x 1.1" (L*W*T)
Main Material: Aluminum Alloy
Color: Black & Gold Tone
Net Weight: 105g
  • 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: warhead052 » Mon Nov 28, 2011 2:33 pm

Awesome, thank you jack!
  • 0


warhead052
Major General
Major General
 
Posts: 1769
Joined: Mon Mar 21, 2011 5:41 pm
Reputation: 0

Unread postAuthor: POLAND_SPUD » Mon Nov 28, 2011 3:58 pm

ohh btw I wasn't joking when I suggested machining a T with an inbuilt air cylinder for it... if you think of it all you need is a brass rod with 4 ports cut in it (barrel + valve + magazine + aircylinder supply port).
  • 0

Children are the future

unless we stop them now
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

Sponsored

Sponsor
 


Unread postAuthor: jackssmirkingrevenge » Mon Nov 28, 2011 4:42 pm

What would the air cylinder to, cycle a bolt?
  • 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: POLAND_SPUD » Mon Nov 28, 2011 5:45 pm

What would the air cylinder do, cycle a bolt
exactly

now that you have a lathe you can probably make this fairly compact... if you're not convinced yet... think of it - it would require machining

:D
  • 0

Children are the future

unless we stop them now
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: jackssmirkingrevenge » Mon Nov 28, 2011 5:47 pm

... but the idea here is to show that something can be made without machining ;) I even cast the chamber endcaps out of epoxy!
  • 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: POLAND_SPUD » Mon Nov 28, 2011 5:53 pm

ohh I see... :?

well you can still machine one for yourself.. or just build one out of standard fittings
  • 0

Children are the future

unless we stop them now
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: jackssmirkingrevenge » Mon Nov 28, 2011 5:58 pm

Something along those lines is in the works, it's a bit far from coming to fruition though.
  • 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: Gun Freak » Mon Nov 28, 2011 5:59 pm

Lol he never builds for himself, he's our experimentalist :D
  • 0

OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
Holy Shat!
User avatar
Gun Freak
Lieutenant General
Lieutenant General
 
Posts: 4969
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Country: United States (us)
Reputation: 11

Unread postAuthor: jackssmirkingrevenge » Tue Nov 29, 2011 12:06 am

For science!

:D

The chamber is curing in the lab oven as we speak, hope to give the setup a go this evening.
  • 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: MrCrowley » Tue Nov 29, 2011 12:17 am

jackssmirkingrevenge wrote:The chamber is curing in the lab oven as we speak, hope to give the setup a go this evening.
Two questions (one of which is in two parts):
1 - How hot, how long?
2 - How much curing time do you save?

I'd love to reduce curing time for epoxies but seeing as you don't do it at home, you either don't own an oven or a conventional oven is not appropriate.
  • 0

User avatar
MrCrowley
Moderator
Moderator
 
Posts: 10207
Joined: Fri Jun 23, 2006 10:42 pm
Location: Auckland, New Zealand
Country: New Zealand (nz)
Reputation: 4

PreviousNext

Return to Pneumatic Cannon Discussion

Who is online

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

Reputation System ©'