That looks really nice, you should make the barrel come out of the grey tube.

Yeh this guy dosen't understand physics, He is overly arrogant and demands that he knows everything, even though currently to my knowledge no air powered weapon can reach speeds of 2000fps and over.

Delrin isn't flexible, it moves backward.

Hey, what do you guys think the best PCP pump would be for filling 48ci tanks from 1000 to 3000 psi? So far i have decided on the Webley TRIpump, is that better than others (Airforce, Hill, etc)

White vinegar may work, if you use a Heatgun gently on it (depending on the shirt material).

Wouldn't the Helium leak?

I used Carbon fiber as a barrel once, it worked for a while then split, the splinters arent health aswell.

The Delrin would seal at high pressures, soft sealing faces would crush and wear.

kydavies wrote:I slept on it and figured that the latch is going to be a huge pain in the ass due to the undistributed force. We'll see where I get.

Couldn't you use three latches distibuted evenly and a collet system where you twist it to fire.

You want a custom 316L stainless steel Piston valve with an Aluminium piston That has a Delrin sealing face.

I wouldn't suggest doing that, use Steel Hydraulic tube or Seamless stainless steel, Jsefcik hybrids only encounter high pressure for a matter or seconds, pre-ignition pressures are usually below 1000psi, 4000psi in galvanised steel tube would probably strip the threads and explode, or rupture.

It Probably won't cycle in Full auto, semi is Possible but it may need some tweaking, Most likely scenario is that it jams.

No it Doesn't, in those videos people add a tiny bit of glow stick liquid. Try this

palanit wrote:so if i buy this regulator, would I replace the one that comes with the tank or just add it on with it.

WHat? why can't you just use the one on the tank, never mind yes you would.