I say, . . . yes?

No, I understand what you're saying. I'm inclined to go with the first one since the hammer is moving easier. It hits the valve pin harder which leaves it open slightly longer. Polishing the receiver halves has nothing to do with how well air flows through the valve or powertube ( volume / time ) nor with your input pressure.

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This thread is very interesting......but my head now hurts lol

Right, but then that states that your just using more air? So with respect to Lord Odins question:
<shakes the magic hopper> Signs point to yes, the extend microduration the valve is open, does use more air, with less efficency.

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Ok so if it less air efficency, how much we talking about? maybe 10 shots less?20? I dont thnk its going to bring your shot count down by the hundreds.

I just had a thought. If someone is using Co2, because there is more liquid trying to expand because the valve is open longer, it might freeze the gun up quicker, too.

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Valid point, but on the other hand...when using a remote, and by the time the Co2 gets past the valve it has already expanded. No?

And I would assume that the same way the polised internals help reducing friction for the bolt when it is moving forward, the same physics apply when it is on its way back. But then again thats only my guess.

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washer first, o-ring next, tombstone holds em both in place. Not to worry though, you´ll notice pretty fast if you´ve got it wrong.

You only lose air efficiency if you don't adjust your drive spring ( if necessary, ) after polishing ( refer to my first post in this thread. ) If you're happy with the increased velocity, then the extra air used is likely helping you and that's nothing to complain about.

As for CO2 freezing up easier, that might be possible since using more gas allows the liquid to evaporate and cool down faster. But siphoning liquid CO2 into the valve still requires cold ambient temperatures and sustained rapid fire, making the slightly higher gas usage moot.

__________________
You can't wipe a welt
-J

Paintball FAQ's | Asking yourself "What should I get next?" | Paint & Barrel Facts | Fixing the Chop
HPA vs. CO2 | Regulator FAQ's | To Remote or Not To Remote | Slide Checks 101 | LPK FAQ's
Complete A-5 Maintenance | Complete T-8 Maintenance | Which Vest is for Me? | Secondary Sights | Rails, Sights, & Targeting
Sale - Custom Vests, MOLLE Gear, Dogleg Stock, & More

My question here is: Where does the extra air go? Doesn't the turbulence created by the FVA actually limit the amount of air that comes out of the valve? Or is it somehow cramming it through the backpressure system?

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That's a good point. What doesn't go out the barrel will probably go out the cyclone/RT port and/or out the back of the powertube. Screwing the FVA in more probably makes the hammer blow back harder because more air is being directed towards it than usual.

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That's my thought as well, but I'd be surprised if it didn't cause less air to leave the valve in the first place.

But isn't backpressure good? Extreme example would be a Cyclone and a RT, and working with a LP setup. Kinda like running a table saw, a lathe, and a TV on the same circuit, the more voltage you have available, the better.

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