Posted: Sat Nov 26, 2011 7:04 am
BSP or NPT?Crna Legija wrote:Goats spudz wrote:Hey jsr on your popoff and slide-check are they 1/4" bsp?id say sojackssmirkingrevenge wrote: the thread is a 1/4"pipe thread.
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qev and slide valve semi auto?
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Posted: Mon Nov 28, 2011 11:49 am
My fittings are BSP, can't say how it fits with NPT.Goats spudz wrote:BSP or 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
Posted: Mon Nov 28, 2011 1:45 pm
good for you jack 
that qev looks really simple
that qev looks really simple
Posted: 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?
Posted: Mon Nov 28, 2011 2:19 pm
Aren't they allwyz2285 wrote:that qev looks really simple
It's all in the specs:can you measure the dimensions of the qev? Like the width, height, and length?
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
Posted: Mon Nov 28, 2011 2:33 pm
Awesome, thank you jack!
Posted: 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).
Posted: Mon Nov 28, 2011 4:42 pm
What would the air cylinder to, cycle a bolt?
Posted: Mon Nov 28, 2011 5:45 pm
exactlyWhat would the air cylinder do, cycle a bolt
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
Posted: 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!
I even cast the chamber endcaps out of epoxy!Posted: 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
well you can still machine one for yourself.. or just build one out of standard fittings
Posted: 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.
Posted: Mon Nov 28, 2011 5:59 pm
Lol he never builds for himself, he's our experimentalist
Posted: Tue Nov 29, 2011 12:06 am
For science!
The chamber is curing in the lab oven as we speak, hope to give the setup a go this evening.
The chamber is curing in the lab oven as we speak, hope to give the setup a go this evening.
Posted: Tue Nov 29, 2011 12:17 am
Two questions (one of which is in two parts):jackssmirkingrevenge wrote:The chamber is curing in the lab oven as we speak, hope to give the setup a go this evening.
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.