HPA and Co2 mix- someone around here somewhere has done this...

[Voltar1]

AT44 tube with CO2 added until liquid vents while horizontal
Air added to 2000psi
Stabilized at home19 cel 110bar on tank gauge
Outside in sun at 25 cel 125bar
Warming in sun to 30 cel 150bar

1034.6 grams weight will weigh when empty .......

[SeanMP]

Interesting

As far as I know.

-The amount of CO2 that will be in the Air /CO2 mixture will be temperature dependent. As the temperature rises there will be a higher percentage of CO2 in the mix.
-The CO2 will gas off to maintain the molecular density at a given temperature.
- Once in the mixture the gases will not separate until the temperature is dropped to the point where the CO2 will revert to liquid. Thus any pressure/temperature equations must treat the mixture as a distinct gas not two independent and exclusive gases


Walter is correct.

[FRANK]

OK but after all this is it safe to do it? it would make my shoot count go up in my Disco enuff to do a full FT day? insted of pumping every 20 to 25 shots.

[FRANK]

that is wonderfull. I did try it a few times but after getting the my qb modded to shot 270 in one fill of hpa it was not worth it for the QB.
but on the other hand the Disco is a different story. I get up to 28 full power shots but mostly from 22 to 25 shots. so the co2 hpa mix would be great for this.
I can tell you this maybe it will help in ur calculation.

I fill my 13ci tank with co2 was about 900psi then I pump it up too 1500psi with hpa and i did that about 3 times had a great shot count but was too much work so I modded the hammer spring with some of the forum help.
so I know full of co2 and 1500psi was safe in a 3000psi tank regulated at 850psi

[Voltar1]

that is wonderfull. I did try it a few times but after getting the my qb modded to shot 270 in one fill of hpa it was not worth it for the QB.
but on the other hand the Disco is a different story. I get up to 28 full power shots but mostly from 22 to 25 shots. so the co2 hpa mix would be great for this.
I can tell you this maybe it will help in ur calculation.

I fill my 13ci tank with co2 was about 900psi then I pump it up too 1500psi with hpa and i did that about 3 times had a great shot count but was too much work so I modded the hammer spring with some of the forum help.
so I know full of co2 and 1500psi was safe in a 3000psi tank regulated at 850psi

Frank pressure will not tell you how much CO2 is in that tank. Have to weigh it before and after.

[AirGunEric]

I'm not sure if I'm regretting asking the question in the first place at this point...

[FRANK]

I know I was filling it with co2 till presure equalized and that is about 900psi for co2 at room temp.
and then pump air [ hpa] too 1500psi

but I would like to know if I can fill my Disco with co2 and then top it off with air [ hpa ] too 2000psi and call it a day at the FT.

[Voltar1]

I know I was filling it with co2 till presure equalized and that is about 900psi for co2 at room temp.
and then pump air [ hpa] too 1500psi

but I would like to know if I can fill my Disco with co2 and then top it off with air [ hpa ] too 2000psi and call it a day at the FT.

Frank, you were most likely only getting gas into that little tank as there is no way to vent off the vapor space. Without a scale you do not know if any liquid is in the tank.
Same for the Disco, without a method or equipment to allow determining liquid content I would not advise trying to CO2 into the gun then adding air.

That disco double holds promise for this eh?

[FRANK]

if you hold a co2 tank upside down liquide co2 goes in.

[Voltar1]

Walter seems to have taken quite a bit of heat on that one. I do like his doubled shot count on the mix vs. plain HPA or plain Co2...

if you hold a co2 tank upside down liquide co2 goes in.

Ok Frank, how much goes in?