spudgunnerwryyyyy wrote:force=pressureXsurface area

do the math

Right, but the air is going to want to travel via the path of least resistance, AKA the barrel, which puts much less pressure onto the spring. If you use the P*A formula, it would put 80 lbs of pressure on the spring, which seems way too high.

http://i133.photobucket.com/albums/q66/gotmilk1124/backpressure.jpg I'm building an airsoft gun with a modified piston valve, and I'm trying to figure out the pressure exerted on the spring shown in the picture by the air pressure in the chamber. Because the air is exiting the barrel, I assume that...

Yea, I think I've figured it out. The regulator wants an on/off valve, not the pin valves found in paintball tanks. At least this gives me an excuse to get a 10lb CO2 tank.

I recieved my Taprite regulator in the mail today. It screws onto the CGA 320 threads of my 20oz CO2 tank fine, but I noticed it has no way to push down on the release valve of the CO2 tank. Instead, the O-Ring of the regulator simply rests on the shoulder of the male threads on the tank. http://i13...