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|09-11-2012, 03:13 PM||#1 (permalink)|
Phantom on hpa
Allright I have a question:
What is best to use if using hpa on a phantom?
I will already have modified ranger powertube.
What best air output to use if used with latest ninja pro reg
I am going to use a 6'' barrel with freak insert
|09-11-2012, 03:20 PM||#2 (permalink)|
When I am using HPA on my phantom. All internals are stock.
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|09-11-2012, 03:29 PM||#3 (permalink)|
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|09-11-2012, 03:42 PM||#5 (permalink)|
Join Date: Nov 2009
I played with hpa on my phantom this weekend. No noticeable difference between hpa and 12 grams, beside the obvious.
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|09-11-2012, 06:17 PM||#6 (permalink)|
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The only thing I have to change is my main spring. On HPA I can't get mine to shoot below 300
|09-12-2012, 12:55 AM||#8 (permalink)|
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Join Date: Sep 2011
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strange, stock internals I chrono the co2 to shoot 280. When I switch to hpa it jumps to about 297-300.
I say stock as:
|09-12-2012, 01:04 AM||#9 (permalink)|
Hpa need to use the red mainspring
CCI offers two other mainsprings besides the stock one - red for HPA users (HPA needs a little more hammer force to reach the same velocities) and blue (used for indoor play or in countries where velocity is limited by law).
|09-12-2012, 08:12 PM||#10 (permalink)|
Join Date: Dec 2010
Location: Fascist Valley
I've owned three phantoms at different points (well still have two) and ran them all on hpa in the end. Two of them were kept stock in terms of internals and springs. One was a micro/6" barrel (with muzzle break though). However, the third one had to change the main spring to get velocity up and ended up changing the valve spring out as well. I ran all of them on reg's (a very old sidewinder, an old black magic wgp reg and a wdp mini reg I had slightly modified). I found my phantoms seems to really like 600-700psi.
It's hardly necessary, but I'm inclinded to say they have been a bit more consistent (then again, I went from 12gs to hpa, so... yea). On the downside though, they actually seem louder with hpa... I credit this to co2's (liquid->vapor/gas) nature of expanding slower than compressed air.
With hpa there's a loud bang as opposed to more of a pop (like comparing opening a soda or beer at a normal pace versus yanking a cork out of a bottle of wine really fast with lots of force). It's also noticeably louder at 850psi than 650psi, but both significantly louder than when using co2.
These days I really only use hpa for two reasons, stability/consistency (really only important on my semi auto some markers) and accessibility. Back when I was in New England I used co2 almost exclusively, because I had free ready access through the beer keg/bar setup at my fraternity.
TBH, unless you just want to try it out for fun or are in a situation like me where co2 is way more expensive, co2 is probably the way to go. In a lot of ways I prefer using co2 on all my pumps, given it's natural properties.
You do have a valve that might make hpa more useful. It will certainly be better with hpa than a stock phantom/ghost style valve and cupseal as it (as far as I can figure) seems to increase flow properties.
Oh and last bit, hpa seems to be more effective with shorter barrels (6-8" w/ muzzle break but no porting; and 12" w/ a good amount of porting) than longer when I am using it to run my nelson based guns. I hate playing with 14" barrels, unless they're significantly stepped and have lots of porting. I am loath to play with a 16"+ barrel unless I'm out to have fun.
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Last edited by toymachine; 09-12-2012 at 08:16 PM.
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