high pressure air??

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killercrow · #1 Post by **killercrow** » Sun Oct 16, 2005 11:27 pm

what can you guys tell me about HPA? it works on co2 guns? what would need to be modified? im interested in knowing about this, sounds cool... since it just keeps gettin colder up here

my co2 is losing its effectiveness pretty quickly!
thanx.

al.

#2 Post by **sniper** » Sun Oct 16, 2005 11:35 pm

JezX here is probably the expert on this.

I'll be able to tell you more as soon as my Hill Pump arrive by next friday, I got all kind of experiment line up .... well mainly on QB and 2250. Converting or actually just using HPA instead of CO2. Basically testing how much high pressure can CO2 equipments take so we know what is needed to be changed ..... actually the Hill Pump is for my HW100 that is not here yet .....damn..... it's taking so long ...hopefully just another 3 weeks ....

ETA · #3 Post by **ETA** » Sun Oct 16, 2005 11:57 pm

The quickest and easiest is to get one of those paint ball HPA tanks with built-in regulator to 850psi. Get yourself a CO2 bulk setup from Cooper-T, Mac-1 or whoever. Use the HPA tank like you do with CO2 tanks, interchangeable whenever with no additional mods to the gun. Those HPA tanks can be filled at a paintball shops or with a HPA pump.

Another idea is to get a remote adapter and strap a remote CO2 tank to your waist under your coat. Use your body heat to keep the CO2 pressure up. The human body is very good at regulating temperature.

I_HATE_PAL · #4 Post by **I_HATE_PAL** » Mon Oct 17, 2005 12:01 am

ETA wrote: Another idea is to get a remote adapter and strap a remote CO2 tank to your waist under your coat. Use your body heat to keep the CO2 pressure up. The human body is very good at regulating temperature.

Heh, I like that idea!

#5 Post by **sniper** » Mon Oct 17, 2005 12:13 am

ETA wrote:The quickest and easiest is to get one of those paint ball HPA tanks with built-in regulator to 850psi. Get yourself a CO2 bulk setup from Cooper-T, Mac-1 or whoever. Use the HPA tank like you do with CO2 tanks, interchangeable whenever with no additional mods to the gun. Those HPA tanks can be filled at a paintball shops or with a HPA pump.

Hi ETA,

Question: would the pump hold the pressure in the bottle while the bottle is pumped or does it need a oneway valve ?

THX

killercrow · #6 Post by **killercrow** » Mon Oct 17, 2005 12:29 am

that sounds alright, but does compressed air give the same power at the same pressure as co2? or do you need to go to higher pressure to benefit from it? currently i am planning on using a remote line... just gotta get one

al.

#7 Post by **sniper** » Mon Oct 17, 2005 12:46 am

killercrow wrote:that sounds alright, but does compressed air give the same power at the same pressure as co2? or do you need to go to higher pressure to benefit from it? currently i am planning on using a remote line... just gotta get one

al.

From what I heard, if I'm not wrong the HPA gives much higer power than CO2. The only problem is the safety valve on the CO2 bottle, it would open up incase of high pressure in the bottle at about between from 2200 psi and upto 3000 psi, unless if it's defective then it would go off much lower psi. The bottle can hold quite a bit of pressure, my guess is upto 5000 psi .... again if I'm not wrong since the hydrotest is approximately around that psi, I should ask the paintball tech. again just to make sure. Most CO2 lines and fittings are rated at about 2500 psi from Cooper-T.

Exoce† · #8 Post by **Exoce†** » Mon Oct 17, 2005 1:04 am

killercrow wrote:that sounds alright, but does compressed air give the same power at the same pressure as co2? or do you need to go to higher pressure to benefit from it? currently i am planning on using a remote line... just gotta get one

al.

HPA gives the same oompf as CO2, and most HPA tanks are regulated into the middle of the CO2 pressure range anyway. From my understanding it's basically interchangable, yet at the same time vastly superior.

Just so you know I'm not talking out of my buttock; I play a lot of paintball and have my own gear, I have to get my gun crono'd everytime I play and heres what I've noticed. On HPA with my current setup I get velocities between 270 and 290 fps, on CO2 with the same setup I get anywhere from 260 to 310 fps. In my experience they average out about the same but the HPA is way more consistent across varying temperatures.

Oh by the way, go with the remote! It'll be pimp!

ETA · #9 Post by **ETA** » Mon Oct 17, 2005 1:12 am

Sniper,
Those paintball HPA tanks already have a one way QD on the valve/regulator body for filling with HPA. Those tanks are rated for 3000psi or 4500psi air. The regulated output are fixed at 850psi or you can get an adjustible one.

KC,
Compress air will give a bit more kick than CO2 at the same pressure, because air has a lower density and flows easier.

#10 Post by **sniper** » Mon Oct 17, 2005 1:12 am

Hi Exocet,

what's the pressure inside of your HPA bottle ? and how big is it ?

thx.

ETA · #11 Post by **ETA** » Mon Oct 17, 2005 1:18 am

Here are some sizes for paintball tanks. Ranges from 48 to 72ci.

http://www.xtremez.com/paintball/produc ... 86&last=86

Exoce† · #12 Post by **Exoce†** » Mon Oct 17, 2005 1:24 am

sniper wrote:Hi Exocet,

what's the pressure inside of your HPA bottle ? and how big is it ?

thx.

I don't actually own an HPA tank

, I can only afford to rent them since a good one can cost as much as the rest of my paintball equipment combined

The ones I've rented are all 48 cubic inch 3000psi steel tanks manufactured by Pure-Energy (cheapest availible, so all the fields have them)

killercrow · #13 Post by **killercrow** » Mon Oct 17, 2005 1:25 am

nice, exocet! thanx man. thats what i needed to know. so, i need a HPA bottle then? co2 bottle wont work, or...? also, will it give as many shots as co2? but yeah... remote!!!

only way to go...

#14 Post by **sniper** » Mon Oct 17, 2005 1:44 am

Excellent info's ..... thx to everyone.

So with QB & Mac1 extended tube or Xisico bulk adaptor end cap .... no problem there but probably won't get many shots unless connect it to HPA bottle.

as for 22xx needs Cooper-t bulk adpt. and HPA bottle.

Exoce† · #15 Post by **Exoce†** » Mon Oct 17, 2005 1:47 am

killercrow wrote:nice, exocet! thanx man. thats what i needed to know. so, i need a HPA bottle then? co2 bottle wont work, or...? also, will it give as many shots as co2? but yeah... remote!!! only way to go...

Yeah, you can't do HPA in a CO2 tank, you'd exceed the safeties on the CO2 tank or you'd get too few shots per tank to make it really worth it. On top of that, HPA fill setups are costly, and impractical for a single user, and NO paintball shop is going to fill your CO2 tank with HPA, they just won't, unless they're trying to get sued.

If you could do it, HPA tanks wouldn't exist because nobody would spend the extra c-note for one.

With a proper, and thus safe HPA set up, I think you'll probably get more shots per fill from HPA than CO2, my experience is 2 shots on HPA for every shot on CO2 but that comes from my paintball experience where high rates of fire make siphoning (liquid CO2 is ejected from the barrel) rather common. When that starts happening you probably waste more CO2 than you actually use. I expect that HPA should give you at least as many shots as CO2 but I have no indesputable empirical evidence to back that up.