alley cat reg ? - Page 2

bullet · 09-27-2007, 02:54 PM

I have the same problem when I dont have paint in my marker but it does it with co2 and air. It is always a nice surprize to the guy running up on me becuse he thinks I ran out of air and he gets a few to the chest

Azzy · 09-27-2007, 02:59 PM

Shooting paint creates some back pressure.

Reason why CO2 and HPA work differently in some of these guns is that Co2 expands much more to do it's work (3000x from liquid) and has much more energy trapped in a given volume than compressed nitrogen ( which makes up most of our air)

Railgun · 09-28-2007, 12:43 AM

Except that it's a gas at around 800 to 900 PSI when in the valve area since most of the 1:3000 liquid to gas was done back in the bottle or line. So the expansion from there to the barrel and bolt face is pretty much the same as with HPA.

My own thinking, which I can't prove, is that CO2 is a more dense gas so it hits the works with more of a punch. But where my logic (CO2 IS a heavier gas than just "air") falls down is how does this work when you end up having to reduce the hammer spring tension to make up for it and keep the ball velocity the same?

09-27-2007, 02:54 PM	#11 (permalink)
bullet Newbie Join Date: Feb 2007	I have the same problem when I dont have paint in my marker but it does it with co2 and air. It is always a nice surprize to the guy running up on me becuse he thinks I ran out of air and he gets a few to the chest __________________ Team Adrenaline Rush

09-27-2007, 02:59 PM	#12 (permalink)
Azzy Mod-O-Rator Join Date: Mar 2006 Location: Finleyville, PA	Shooting paint creates some back pressure. Reason why CO2 and HPA work differently in some of these guns is that Co2 expands much more to do it's work (3000x from liquid) and has much more energy trapped in a given volume than compressed nitrogen ( which makes up most of our air) __________________ Bryan "Azzy" Spiegel Riverside Renegade Paintball / C.C. S.V.S. Plankowner - LPPC#6 "It is my right to be uncommon—if I can. I seek opportunity—not security. I do not wish to be a kept citizen, humbled and dulled by having the state look after me. I want to take the calculated risk; to dream and to build, to fail and to succeed. I refuse to barter incentive for a dole. I prefer the challenges of life to the guaranteed existence; the thrill of fulfillment to the stale calm of utopia. I will not trade freedom for beneficence nor my dignity for a handout. I will never cower before any master nor bend to any threat. It is my heritage to stand erect, proud and unafraid; to think and act for myself, enjoy the benefit of my creations and to face the world boldly and say, “This I have done.” - Dean Alfange

09-28-2007, 12:43 AM	#13 (permalink)
Railgun Post Whore Join Date: Oct 2006	Except that it's a gas at around 800 to 900 PSI when in the valve area since most of the 1:3000 liquid to gas was done back in the bottle or line. So the expansion from there to the barrel and bolt face is pretty much the same as with HPA. My own thinking, which I can't prove, is that CO2 is a more dense gas so it hits the works with more of a punch. But where my logic (CO2 IS a heavier gas than just "air") falls down is how does this work when you end up having to reduce the hammer spring tension to make up for it and keep the ball velocity the same? __________________ Model airplanes are cool too!

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