30 something BPS = Paint collide in air?

[behemoth]

Someone was saying, a long time ago, that they had a video, where they reached the maximum BPS for a paintball marker

I think it was 30 something, and you could see the balls colliding in mid air...


Anyone know what i'm talking about? Or have a link to a vid?

[electriceel125]

Zakvetter did 34 if im not mistaken.

In a perfect world, (no air resistance) 300Fps/30 bps = 10 feet apart.

[wanna-b-ballin']

no thats BS. not technically possable. if anything, there would be shootdown, and the balls would slow down.
except maybe with an x-valve?

the balls would have to have a ramping velocity to colide in air.

i dont see how it could be a realistic thing to witness.

[68magOwner]

i cought paint colliding mid-air out of my impusle before (vid got deleted when my hard drive crashed)
it was certianly not caused by tremendous ROF (proably ~15 bps) just, the marker skipping a beat, or the ball being mis-shapen or something.

Also, if someone can track down the ne freestyle v8 vid, it has paint colliding in air (its in hish res-slow motion, can see it) however, the balls do not break, just bounce away.

[neppo1345]

Zack Vetter 34 BPS

I don't see any midairs...

EDIT:

It is physically impossible for a paintball to hit the ball in front of it.

UNLESS There are large shot to shot velocity jumps...

[electriceel125]

Large shot drop then spike. If they just kept dropping they would not hit. It it dropped then spiked then possible i guess.

[etjoyride]

Heh, i wonder what the output on that tank is....

[UTDragun]

Zack Vetter 34 BPS

I don't see any midairs...

EDIT:

It is physically impossible for a paintball to hit the ball in front of it.

UNLESS There are large shot to shot velocity jumps...

wrong, paintballs would be so close to each other it would "draft" the one infront therefore having less air resistance.

IIRC at ~36 bps balls are 1 mm apart in the breech/barrel

[UTDragun]

Heh, i wonder what the output on that tank is....

2400 IIRC

[UTDragun]

i cought paint colliding mid-air out of my impusle before (vid got deleted when my hard drive crashed)
it was certianly not caused by tremendous ROF (proably ~15 bps) just, the marker skipping a beat, or the ball being mis-shapen or something.

Also, if someone can track down the ne freestyle v8 vid, it has paint colliding in air (its in hish res-slow motion, can see it) however, the balls do not break, just bounce away.

you mean this vid?

http://media.putfile.com/UFS8-First-Look

I only watched it once, wasnt really paying much attn but i didnt see paint coliding

[Pyroboy597]

Ya, the wind resistance from the front ball would not affect the following ones, making them less likely to maintain a more constant velocity longer. I guess it is possible..

[Indignant]

I've seen Zak shoot his gun firsthand, i've never seen anything shoot faster than it, and i've never seen paint colliding with eachother.

[Tao]

If a paintball travels at 300 feet per second or 3600 inches per second and a paintball is 68 caliber (I am a metric person so I assume this is 0.68 inches???) then you would need to fire 5294 (after one second you would have a back to back string of balls 300 feet long :P )paintbals to reach the maximum rate of fire :P
(You would not be able to fire more paintballs once they are back to back in a string.)

Sure they may collide as air resistence slows them down but they would be going at 300FPS when they leave the barrel so at least the barrel won't jam :P

There is a bit of a flaw though since the bolt pushes the balls forward say 2 ball lengths before it will fire the next so I guess the max rate of fire would be 1764. :P

*note max rate of fire is determined by muzzel velocity...


A comment about paint balls colliding- you probably saw them collide with incoming balls. I have see this before as I saw a ball come at me and one of my own hit in in mid air. If two of your balls in a string of fire collide you probably won't notice it since they would mostlikely "kiss" since they would only be going a few feet per second faster or slower relative to each other, so it would be almost impossible for them to break each other...

[neppo1345]

wrong, paintballs would be so close to each other it would "draft" the one infront therefore having less air resistance.

IIRC at ~36 bps balls are 1 mm apart in the breech/barrel

A sphere doesn't create this "drafting" effect you speak of...this isn't nascar. These are airborne objects. The paintball would create a vortex behind it, not speeding the following ball up, but slowing it down if anything. If they weren't spheres and were square at the back, the "draft" might work.

It might "draft" while in the barrel, and for the first few milliseconds outsid of it, but once the purty boundry layer breaks down, so does any draft

[VFX_Fenix]

A comment about paint balls colliding- you probably saw them collide with incoming balls. I have see this before as I saw a ball come at me and one of my own hit in in mid air.

^^
Completely accurate, and I have seen paint strings crossing and had paint breaking when outgoing collides with incoming.

As for two balls colliding from the same string, physcially impossible. Consider that in the time it takes for a paintball to move at rest from the bottom of the stack to a firing position in the breech the last ball shot is already 18 inches down field. This isn't taking into consideration the ammount of time required for the action to reset after the firing event (bolt moving back to open the breech, ball falling to position, firing cylce initiated/travel time of the bolt/hammer to do their thing, etc.)

It would be like claiming the bullets fired from the Phalanx CIWS (~75rps) or XM214 Microgun (~166rps) ran into eachother while traveling to their target after they exit the barrel(s).