Barrel Efficiency, Tech Tip #1

[Speed_Mag_22]

whoa... i actually learned something... Gun Dyno's!

[chaoticorigin]

The Dye 12" one piece has 7" of unported length. Shouldn't I measure the length from the beginning of the paintball? It would be less then. I was thinking of putting tape around the gun end of the porting covering about an inch so wouldn't that in effect make the barrel more efficient?

The 2 piece dynamics confuses me a little. As the paintball goes to the 2nd step. Doesn't the ball continue to accelerate until it hits the porting? I think the acceleration should still continue but at a lower acceleration because the bore is larger. I gotta try some experiments this weekend with a boomstick. I heard 8-12 was the ideal unported barrel length.

Why doesn't AGD make some good barrels as an optional buy? They seem the most serious about paintball dynamics. My stock barrel shoots decent but it doesn't have a mirror finish interior which gives less friction.

[kero]

Excellent info. Now this is quality service to your customers

Keep it coming and many thanks. Maybe sometime you will address the biggest paintball myth... that closed bolt guns shoot farther than open bolt guns.

[JRSJKD]

This is exactly why I've played with a mag for over ten years. AGD never talks any smack about other manufacturers but if you ask the right question they will give you the answer and back it up with real science and data. From there they let us make a decision based on fact not hype.

Tom, is www.paintballphysics.com ever going to become a reality or will the info just be put in the tech tips area?

[Allen]

Speaking of closed bolt vs. open bolt-

http://www.warpig.com/paintball/technical/paintguns/balistic/closedopen.shtml

Who other than WARPIG and AGD should we rely on to confuse us, stun us, educate us, and entertain us?

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"Don't spend so much on parts that you can't afford to play."

[splatterp8nt]

Thumbs up to AGD for their markers, their advice and the awesome customer servie they provide.

[manike]

Now paintballphysics.com is definitely a site I would like to see.

Open up those archives and show the world some real data although the 2inch folder on mag bumpers could probably be left in the draw...

I would really like to have that film of the ball being shot through a glass barrel available for all. The close up of the ball in the breech and the ball exiting through the smoke trail (I know there's a bit on the RT video). As well as the ball in flight, that stuff is amazing to watch.

I also think some barrel testing with and without ports and some sort of trace element in the gas to actually see if it does exit the ports behind the ball as it goes past would be very interesting!

How about a new breed of two piece glass barrels lol... gotta keep up with fashion

manike

[FireWall]

So whats the Dilly? Why do they put porting on barrels then??

[FlipFlops]

manike, along with glass barrels we'd need colored N2 :-)

[-�on-]

WoW, Tom To Much Spare Time...

[Webmaster]

HEY MANIKE! Nice to see you on here, mate! Sure theres lots of stuff you can contribute!

take care!

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Webmaster - AutoMags.Org
[email protected]
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"Good...bad...I'm the guy with the gun." - Ash, Army of Darkness

[Hoyahdestroyah]

Great info!! That's why AGD makes the best guns in the business.

[PCI2000]

Firewall,
Porting is there to release gas pressure and to quiet the sound. An unported barrel is very loud when you fire a paintball through it.
So it's like a tradeoff:
Unported = loud but more gas efficient
Ported = quieter but less gas efficient

Gotta find that happy medium ssomewhere...

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Black Teflon ReTro Mag
Warped Sportz Drop Forward
68ci/4500psi Centerflag Hyperflow 420 tank
Benchmark 45 grip frame w/Dye sticky grips
KAPP foregrip extender w/Benchmark foregrip

[manike]

<font face="Verdana, Helvetica, sans-serif" size="2">Originally posted by Webmaster:
HEY MANIKE! Nice to see you on here, mate! Sure theres lots of stuff you can contribute!

take care!</font>

OK I'm wondering who the webmaster is... My Yanky friend John? How's the theory of light speed travel going? And the Religious debating?

or another of the crew Eric?

It's not one of the brit John's is it? Hiding behind a Kansas City Origin, lol.

I have a suspicion it's Bonich, but the US origin bit is throwing me... If it is JonBon we need to talk some CAD/CAM stuff matey

Ahh just had a thought... it's not Mr44 is it?

Bill posts under something else so it aint him, Dawn? .... aarrrgghh too many possibilities

manike

[This message has been edited by manike (edited 06-19-2001).]

[M-a-s-sDriver]

Man, I hate to do this: I believe you have the acceleration rates wrong. They are a bit overstated. The rate to push the ball is not 50,000 fps. That is about the escape velocity to achieve earth orbit. To hit that number in 10 inches would push the g-forces to over 22,000, enough to permanetly compress titanium. If you are talking about the initial acceleration from zero to any number, that is proportionally the highest attainable acceleration number on the curve, and mathmatically approaches infinity. Also, if you did go to 50,000 fps, you have to decelerate the ball down to the 300 fps mark and therefore put the paintball through double the stress. Am I off-base here, or did I miss something? Brent Jackson, Pink Fluffy Ballerinas.