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killer15951 · April 20th, 04:54 AM

Ok got a MR2 newly discovered my local field sells hpa.thought would be better than co2 for the gun.is it?

diablo devil · April 20th, 09:41 AM

er yea it is better than co2, co2 is dangrous and frezes everything up its no good, for your marker

***TheAznInvazn*** · April 20th, 12:55 PM

Quote:

Originally Posted by diablo devil

er yea it is better than co2, co2 is dangrous and frezes everything up its no good, for your marker

If CO2 was dangerous, than people and fields across the world wouldn't use it...

Also, MR2 might work more reliabley with CO2, since it stays at a higher pressure, but I'm not sure. If the MR2 has the balance valve inside, than I'd stick with HPA.

And if anything, HPA is much more dangerous, just FYI. Stupid people put lube down their fill nipple, and when they get it filled, they explode, CO2 doesn't do that.

diablo devil · April 20th, 02:51 PM

co2 can give you a really bad burn,if it leaks on to r skin. but fair enough

***TheAznInvazn*** · April 20th, 03:10 PM

when, where, and how are you going to get super cold CO2 to leak on you enough and long enough to give you a burn?

killer15951 · April 21st, 09:56 AM

sadly...I still need to get a tank any sugestions on amount?

***Trbo323*** · April 21st, 10:55 AM

my suggestion, try for a 68/4500 fiber wraped tank, they are pretty much the standard now a days, around $100 on ebay

***TheAznInvazn*** · April 22nd, 08:11 PM

make sure its still in hydro and with at least a few years left on it

killer15951 · May 3rd, 11:48 AM

ummmmmm.............ok but ....hmmmmm.....maybe.....Icould get one for my b-day......wait allready getting co2 powered bbgun wit metal bb's*drools*it's a desert eagle.!!!!!!?

killer15951 · May 3rd, 11:49 AM

Quote:

Originally Posted by Trbo323

my suggestion, try for a 68/4500 fiber wraped tank, they are pretty much the standard now a days, around $100 on ebay

isnit that goin' a be like super heavy + will remote line work for hpa?

***Trbo323*** · May 7th, 01:10 PM

um what? the fiber wrapped ones are some of the lighest tanks you can get and sure you can use a remote line with it a hp tank has an output pressure around that of a co2 tank

***TheAznInvazn*** · May 7th, 10:08 PM

Quote:

Originally Posted by Trbo323

um what? the fiber wrapped ones are some of the lighest tanks you can get and sure you can use a remote line with it a hp tank has an output pressure around that of a co2 tank

Incorrect.

An HPA tak with HP output is around 800 psi.
A CO2 tank has an output of around 1200-1500 psi.

That's a little bit if a difference

***Trbo323*** · May 8th, 09:39 AM

"850 psi being that to mimic the output pressure of co2 at room temperature." quoted from pb nation

"pressure from 250 psi to around 850 psi (the output pressure of CO2)" quoted from wikipedia

thats just two in like a few minutes, i have no idea where your getting your numbers from but if that were true then markers COULD NOT run on both co2 and hpa without modification, the pressures you are talking about between HPA and CO2 are about the same as the difference between LP tanks and HP tanks, and as far as i know if you plug a LP tank into a marker set up for HP it will not work.

they put the output presure of the HP tanks at 850 so people could go from co2 to HPA without doing anything other than adjusting the velosity

maybe if you put your tank in the oven youll have an output around 1500, i think what you were looking at was the pressure at wich co2 goes TO a liquid (acually i saw that was at 1800 so its still wrong), but just cuz it goes to a liquid at 1800 doesnt mean it goes back to a gas at 1800, im not going into the physics of it all to explain it though.

2.0 · May 8th, 09:53 AM

I would think output pressure will depend on the valve on the tank. If the valves are set for 800psi, then 800 is it. If it's set for 1200, 1200 it is. I've measured the output pressure from my crap catalina 12 oz CO2 tank and it's ~833psi.

***Trbo323*** · May 8th, 10:15 AM

um, theres no regulator on the co2 tanks, its a pin valve, its either open or closed, its doesnt regulate any, the co2 going from a liquid to a gas is self regulating, the output pressure will be affected by the temperature though but its not gunna jump to 1500 if you take it outside.

**kenny_1491** · May 8th, 10:48 AM

Exactly. There isn't a very big difference in the output pressure of CO2 and HPA. CO2's downfall is even after being regulated it likes to jump back up to that 800 psi pressure.

***Trbo323*** · May 8th, 11:32 AM

I think your getting confused here so lets take a marker, spyder of some sort doesnt really matter, a stacked tube blowback, once you screw the co2 tank in there is an open passage for the co2 all the way to the cup seal at the front of the lower tube, there is no reulator, once the trigger is pulled the hammer slams forward and opens the cup seal, now there is a passage from the tank all the way threw the barrel (granted it has to push the hammer back)with nothing to slow it down or reduce the pressure.

so its not after being regulated, depending on the temperature and the amount of space it has sometimes a little more co2 will go to a gas after a few shots than what is nessasary thus increasing the pressure a bit, this is exactly why co2 is not consistant, there is no way of getting the exact right amout of co2 to expand to stay at a steady pressure.

**kenny_1491** · May 8th, 12:29 PM

Which falls back to what I said, CO2 doesn't like to stay at a set pressure, it prefers to be at that 800psi pressure.

***Trbo323*** · May 8th, 12:37 PM

ok sure, however you want to look at it, if the temperature goes up though it is going to want to be at something more like 850 though, so yes it regulates itself but only to a range, not really a set pressure, i know the varience can be like +-10fps but does anyone know what that is in psi?

***TheAznInvazn*** · May 8th, 07:17 PM

Strange... the PSI gauge that I have right before the cupseal on my SPyder usually reads 1100 psi when completely full