Don't you just hate that?chinnerz wrote:video:
it failed btw...
simple co-ax with attached stock
- McCoytheGreater
 - Specialist

 - Posts: 191
 - Joined: Tue Dec 15, 2009 1:10 am
 - Location: Mississippi State
 
My guess is that because the breech split, all the pressure was lost, and therefore the projectile failed to penetrate the milk jug.
You should make a breech out of cast epoxy.
            
			
									
						You should make a breech out of cast epoxy.
<a href="">DONT TAZE ME BRO.. DONT TAZE ME... AHHHH</a>Yea, that's definitely going to get you at least a tazer.
facebook.com/biggrib
lol i only just figured out what that wasMcCoytheGreater wrote:Don't you just hate that?chinnerz wrote:video:
it failed btw...
- 
				Keringkien
 - Private

 - Posts: 6
 - Joined: Wed Jul 15, 2009 4:51 am
 
Aussies all they way!! I'm working on my own air rifle now, hopefully get it up to say 300psi and perhaps a 6mm barrel would be handy, if I can get my hands on come copper pellets...anyway mate good luck with your creation, it's holidays for me now so I can get a lot done on this!  
Edit: Heading down to Bunnings, do you think they have 20mm threaded piping? I'm guessing thats the way to build my chamber. I'm using MRR's base for a piston valve, sill don't understand these things yet, maybe when I test it with my chamber on I'll work it out. Wish me luck guys.
            
			
									
						Edit: Heading down to Bunnings, do you think they have 20mm threaded piping? I'm guessing thats the way to build my chamber. I'm using MRR's base for a piston valve, sill don't understand these things yet, maybe when I test it with my chamber on I'll work it out. Wish me luck guys.
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				RatedZ4Zoro
 - Private

 - Posts: 3
 - Joined: Thu Dec 31, 2009 5:22 pm
 
hey great gun,
sorry but this question is a bit off topic but,
i have built a pvc coaxial with a 40mm chamber and cylinder(where piston slides up and down) with a 20mm barrel. My first piston was made of cast hot glue with a 6mm rubber sealing face. my second piston was mae of a 25mm coupling with rubber sealing face bolted on to it. My problem is that the piston seals the barrel, the gun pressurizes but when i try to shoot all the air just escapes out of my blowgun pilot and the piton doesn't even move. Why is this?
            
			
									
						sorry but this question is a bit off topic but,
i have built a pvc coaxial with a 40mm chamber and cylinder(where piston slides up and down) with a 20mm barrel. My first piston was made of cast hot glue with a 6mm rubber sealing face. my second piston was mae of a 25mm coupling with rubber sealing face bolted on to it. My problem is that the piston seals the barrel, the gun pressurizes but when i try to shoot all the air just escapes out of my blowgun pilot and the piton doesn't even move. Why is this?
- Crna Legija
 - First Sergeant 2

 - Posts: 2333
 - Joined: Sun Jul 20, 2008 5:14 am
 - Location: australia
 
how tight is you piston? did you put a equalization port if so try block it up.
if the piston is air tight and you know it make a tiny hole the size of a needle to let air in the chamber
you can also use a bigger pilot valve if it works you need a tighter piston
and try to make piston as light as you can
            
			
									
						if the piston is air tight and you know it make a tiny hole the size of a needle to let air in the chamber
you can also use a bigger pilot valve if it works you need a tighter piston
and try to make piston as light as you can
'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson
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						--Homer Simpson
Add me on ps3: wannafuk, 8/11/11 cant wait





