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Old 05-17-2007, 10:27 PM   #1 (permalink)
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Regulator or Expansion chamber

Hi everyone,

I just got a new pump 'cocker (thanks Irish). It came with the stock WGP reg. I'm planning to mostly run on CO2 - but may occasionally drop my HPA tank on the thing. So, this is a three part question:

a) Will the CO2 damage the reg?
2) I've got an expansion chamber from my Inferno - should I put that on instead?
III) Is there a reason that the reg is giving me significant velocity fluctuation while shooting CO2?

thanks,
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Old 05-17-2007, 11:20 PM   #2 (permalink)
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From my experiences the stock WGP reg has no problems with co2 at all, it seemed that it liked it a bit than some of the other regs I have used.
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Old 05-17-2007, 11:28 PM   #3 (permalink)
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Whats the alignment of the CO2 tank? Is it anti siphon? Liquid moving up the lines could cause your velocity fluctuations.

I'd stick with the reg. Its probably running at significantly lower pressure than unreg'd co2, so you might need to respring and tune for higher pressure to use the x-chamber.
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Old 05-17-2007, 11:43 PM   #4 (permalink)
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Quick and dirty answers:

a) the WGP regs are designed to work on CO2 and are considered very good quality. An anti-siphon is recommended, but you should be OK in general. An WGP ergo reg is the same but externally adjustable (a big plus).

2) No. Being able to control pressure is better. An anti-siphon + reg is ideal.

III) A wide variety of factors affect velocity consistency, especially your quality of paint and the paint-to-barrel match. Using CO2 makes things especially more difficult because the pressures can fluctuate, as you know.
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Old 05-17-2007, 11:52 PM   #5 (permalink)
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If you're aiming down while firing and it's near full then you WILL be getting liquid into the reg. While the earlier WGP regs are pretty good at handling this if you stack the deck against them by feeding them raw liquid then there's only so much they can do. The liquid won't hurt the reg but it will pass the liquid through to the valve chamber to some extent. And if you pass any liquid through to the valve then it will cause the pressure to go up a lot and you'll have nasty velocity spikes.

I'd say get the tank anti syphoned just to help avoid the issue in the first place.
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Old 05-18-2007, 01:06 AM   #6 (permalink)
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The strange thing was that I was looking at a slow decrease in velocity. I've played pretty extensively with CO2 (HPA is only the last year of the 10 or so of play for me) and I was getting a strange opposite of shootdown. My first few shots after not shooting for a while were noticeably slow then I would get back up to the 275-85 I set at the chrono.

I'm running a 3.5 or 9oz horizontal to a bottom line - so yes, the chance of feeding liquid is high. Were the slow shots due to NOT feeding it Liquid? As in, when I went to the chrono I set velocity with liquid and when I would fire 3-4 quick shots I would again charge the reg with liquid?

As I said, it's a new gun, I'll put some air through it this weekend and see how it behaves.

The paint-barel match seemed good - I was accurate and didn't have rollouts.

thanks for the responses everyone.
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Old 05-18-2007, 01:25 AM   #7 (permalink)
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The reg may just be begging for some lube?
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Old 05-18-2007, 10:46 AM   #8 (permalink)
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First thing I did when I got the gun was a complete strip down, cleaning and re-lube. But I can do the front end again I suppose. Maybe in my excitement about the new toy I didn't spend the time I should have.

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Old 05-18-2007, 11:28 AM   #9 (permalink)
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Quote:
Originally Posted by brycelarson View Post
I'm running a 3.5 or 9oz horizontal to a bottom line - so yes, the chance of feeding liquid is high. Were the slow shots due to NOT feeding it Liquid? As in, when I went to the chrono I set velocity with liquid and when I would fire 3-4 quick shots I would again charge the reg with liquid?
I'd think this is a definite possabilty. Try an angled asa if you have one you can swap on, and see if it makes a difference.
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Originally Posted by tarakian View Post
Let that be a lesson to all you criminal types. Don't steal old and unique paintball gear. We are the market and we will find you.


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Old 05-18-2007, 02:14 PM   #10 (permalink)
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Or what about the 3.5 mounted directly to the vertical ASA? That would be the ultimate anti syphon.... at least until you try to fire while hanging from a tree limb by your legs......
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