Interesting stuff there mate, much appreciated

BTW I'm getting around 25,000 psi for any concealed amount of liquid oxygen when the temperature reaches 25 degrees celcius, or room temperature.

Hopefully there will be no grabbing of it by the tail

Cheers all

Yeah cheers guys, that helps a lot. I only started thinking about it after trying to work out how many shots you could get out of a gas oxygen tank supplying a small hybrid at 200+ mixes. Wasn't a whole lot given the preignition pressures are around 3000psi, almost the same pressure as a full oxy bo...

Yeah I have been for a while but haven't come up with anything so far apart from graphs that go up to its critical points, but no further. Haven't been able to extrapolate the graphs either

So 1 litre of liquid oxygen, in 1 litre vessel @ 30 degrees centigrade = ?? atm

Yeah that's what I thought, however after some research I found that they have to store oxygen in dewar that a vaccum flasks, and eventually the liquid boils off through the pressure release valves as it can never keep the liquid 100% isolated from outside heat. They said that oxygen, once it reache...

I'm curious as to how to work out the pressure of a vessel after a liquid such as oxygen or nitrogen etc. is heated beyond it's boiling point inside it. I am led to believe that oxygen cannot be contained as a liquid once it goes beyond it's boiling point, not matter what the pressure, so I'm wonder...

Yeah both of those ideas should work in most setups. The second one does seem quite complex though, is that of a paintball marker? The only thing is I'm hoping to come across a sort of valve or overall design that is simple where it's parts have less potential for wear in high mixes and rates of fir...

Yeah that's similar to mine so far but I've had concerns about using the piston in a high mix hybrid simply because it's going to act like a projectile against the rear every time I fire. Not sure how long it would hold up for

Which thread is that?

Very interesting. Did you just come across that in a museum or planned on seeing it?

Has anyone ever come upon any inline pressure release valves that could replace a burst disk?

Yeah I gotcha. Fairly specialised design. Had much luck with it? I've been toying with the idea of a pressure release valve to act as my burst disk as you'd call it. Basically something like this mounted inline before the barrel, only with some sort of latch to catch the shaft of the seal when the s...

An o-ring detent could be an alternative if you're firing hard consistent projectiles, but long is the way, and hard, that out of Hell leads up to Light . How does that design work? I'm keen to get rid of the piston without having to look at burst disks. I've emailed a couple of suppliers of ruptur...