I live near that area to and I had the same problem. I was thinking about going to a beach near my house that none goes to because of the rocks and the steep climb down, but thats all I could think of.

Zeolite is used to refine the oxygen, not get it from the air. As far as i know, those can only absorb so much. In the hospital i volunteer at, there is a HUGE liquid oxygen tank outside, that gets filled by the company periodically (praxair i think). Find a local hospital and ask for a oxygen tank...

I have two questions:

Why use a ball valve over a sprinkler?

And why did you put the ball valve in the middle of your chamber?

Also to be safe you should put the ball valve someware with two layers of pvc, like the coupler or the cap.

it's a metal one

But the diaphram still cant take much pressure

I dont think ive ever seen someone use that layout. I like it alot

Can we have some more info on your desin:
Pneumatic or combustion?
how big is plactic bottle?
How many bbs you want to shoot?
Cloud?
Ect

vent the schrader

sorry my bad

It's because the space between the shrader and ball valve is not big enough to bring the overall pilot pressure down enough. By venting it out again, the pressure comes down enough to allow the QEV to actuate. Just because you relieve some pressure from the QEV's pilot, it doesn't mean it's enough ...

Actually, 6mm=1/4".

However, I've never heard of 1/4" PVC being available anywhere except for specialty plastics suppliers.

It was a pretty cheap gun, but i do know that is was the inner barrel, and at the home depot near me they sell pvc in 1/4in.

EDIT: Sorry it was 1/8in. pvc

Thats a good idea, but then if a leak is created there is no way he would be able to fix it. If I understand right...

Edit: And to answer your question David, yeah it sounds great (like everything you make). I can't wait until it is done.[/quote]

Their wont be leaks, its covered in epoxy[/quote]

I bought the bar 10 and i shot it three times, after that whene i pull the bolt back it stops for a second, then it slamms shut and the piston goes back forward with it. Anyone know whats wrong.

Alright first comment. I was actually planning on for some time now doing the same exact thign you did except instead of propane I would have a fill button with co2 up in the front of the gun by the main trigger. Mine would also use regular airsoft magazines and an aftermarket airsoft hopup (m14). ...

What about this gun compared to the bar 10

http://www.shortyusa.com/airsoft.html?h ... 6&CA=&RID=
also what do you think about this gun

http://www.import-action.com/mp006.html

i forgot to mention im looking for accuracy to about 150ft, and thanks ill look at it

Edit: thanks I just looked at it and its perfect.

I have been looking online for ALONG TIME and last nigh i even stayed up until 1:30 am doing google searches. These are the two im leaning towards: http://www.airsplat.com/Items/AR-AGM-AWP-002.htm or http://www.airsplat.com/Items/AR-UTG-AWP-368A.htm I like the second one better though This is what I...