Why is nitro quieter?

[Magluvr]

I was over at my friends' house the other day and he had just got nitro for his automag, he didn't change anything else, and his gun was shooting a lot quieter. Is there any reason for this or is it just a freak accident?
I am hoping for a reason because I just bought a tank and I'm waiting for it to arrive. (I bought it almost solely because it made his gun quieter, the part about velocity fluctuation was only an added plus)

[Redkey]

was his gun shooting at the same velocity with HPA as it was with CO2? Is the pressure supplied to the gun with CO2 the same as supplied with HPA?

[Vex]

I don't think that the type of gas you're running has anything to do with how loud your marker is--although, I could be wrong...

[RUFF N TUFF]

Actually it does make a difference nitro is more silent that co2 i tried my n2 tank on my cuzzins tippmann quiet and if u wanna find me in speedball better look for mr cause u won;t here my mag also teh barrel and the porting has to do with the silence

[Jonesie]

Originally posted by RUFF N TUFF
Actually it does make a difference nitro is more silent that co2 i tried my n2 tank on my cuzzins tippmann quiet and if u wanna find me in speedball better look for mr cause u won;t here my mag also teh barrel and the porting has to do with the silence

Holy Run-On Sentence Batman! I pity whoever taught you English...

Later ~ Dave

[RUFF N TUFF]

I apoligize for the run on sentence. If it makes u happy i won't try to do it to much.

Yeah right i don;t care just tell the kidd what he wants to know and next thread

[cky shane]

I don't think you told him anything intelligible, personally...

The difference probably has to do with the pressure. Also, they expand at different rates, so depending on the porting of the barrel and the expansion rates of the gas, that could very likely be an issue.

It's not a case of nitro being quieter, it's more of a case of nitro being quieter on your set-up.

[Magluvr]

Redkey- His gun was shooting the same velocity, just more consistently since its nitro and the pressure supplied to the gun was the same since he has an extra reg to keep out co2, like me.

cky shane- You bring up an interesting comment about gases expanding at different rates. So am I right to believe that n2 expands a lot faster than co2?

[RUFF N TUFF]

cky shane ge6t a job at AGD genius i dunno if ur smarter than tom but hey that was pretty darn smart

i really didn'y know that i just thought since nitro was a noble gas maybe it would be quiter

[Russ]

RUFF N TUFF,

What the hell are you talking about?

[RUFF N TUFF]

n/m srry

[Crimson_Turkey]

Originally posted by RUFF N TUFF
Actually it does make a difference nitro is more silent that co2 i tried my n2 tank on my cuzzins tippmann quiet and if u wanna find me in speedball better look for mr cause u won;t here my mag also teh barrel and the porting has to do with the silence

Translation:

Actually, it does make a differance. Nitro is more silent than co2. I tried my n2 tank on my cousin's Tippmann. It was much quieter. If you want to find me in a game of speedball, you had better look, because my marker is so silent that you can not locate me by sound. In addition, your barrel's porting affects the noise level.

[cky shane]

Magluvr, I'm inclined to believe it expands faster because less air would be sent out the muzzle, therefore resulting in less noise.

That, of course, is assuming the noise is associated solely with the muzzle.

[battlegroup]

Originally posted by Magluvr
Redkey- His gun was shooting the same velocity, just more consistently since its nitro and the pressure supplied to the gun was the same since he has an extra reg to keep out co2, like me.

First, how did you fill the tank? Scuba, Compressor, or true N2? Because I have had both true N2 and compressed air (which are different) an never saw a difference!

You can't tell if the gun is shooting at the same velocity just because it's using the same secondary reg. If the N2 tank has a reg on it, it could be set lower than your secondary reg. Shoot it over the chrono and see what it's set at.

Also, some of the noise you may hear is due to the set up. with a co2 tank on my mag I hear a loud ting when I shoot. put my N2 tank on and the ting is gone.

The difference in expansion rates between a fixed volume (dump chamber) of Gaseous N2 and the same fixed volume of Gaseous CO2 If any would be so minute that in all seriousness you wouldn't be able to tell the differnce. If one of the gases expanded at a different rate the velocity of the ball would change. the one that expanded faster would push the ball faster out the barrel therefore you would be shooting at a different velocity and the noise would change. The only way to test it is with a decibel meter at the end of the barrel with each gas pushing a ball at the same fps.

I think the gun is either set at a lower velocity right now, or the phsycal change in the set up (n2 tank instead of CO2 tank) made it quieter because of the different sound properties of the tanks.

[Rampage]

That ping you hear is likely from the sound echoing through the liquid co2 in the tank.

-Joe