Official Data Thread

[AGD]

Deep Blue,

By request I have added this thread to hold the data that is discussed in various threads here in Deep Blue. It is NOT for posting so please don't force me to delete them.

If you think something is appropriate for entry here please post the request in a separate thread for everyone's consideration.

Thanks

AGD

[AGD]

This data graph shows the air pressure buildup behind the ball in a Dark Angel. The solid line represents pressure, the dotted line is a sensor at the end of the barrel and detects when the ball leaves.

AGD

http://www.spectrashift.com/AGD_DATA/angelspike.jpg

Could not find this pic AGD 10-11-06
Could not find this pic Bunny 05-28-17

[AGD]

I decided to put up more data since you guys are having fun with it. Behold the mighty Angel.

AGD

http://www.spectrashift.com/AGD_DATA/angel11p.png

Could not find this pic Bunny 05-28-17

[AGD]

The beloved Cocker.

http://www.spectrashift.com/AGD_DATA/blast04p.png

Could not find this pic Bunny 05-28-17

[AGD]

The "buy it becuase it's low pressure" Impulse. Looks about the same to me...

Not sure if this was calibrated before testing, I seem to remember the peak pressure being around 60 psi.

http://www.spectrashift.com/AGD_DATA/impulse10p.png

http://www.spectrashift.com/AGD_DATA/blast04p.png

Could not find this pic Bunny 05-28-17

[AGD]

Ah the Matrix, the only marker that would waist time holding the bolt closed after the ball left...

http://www.spectrashift.com/AGD_DATA/mat18p.png

Could not find this pic Bunny 05-28-17

[AGD]

And last but not least our very own Emag. (pre level 10)

http://www.spectrashift.com/AGD_DATA/emg12p.png

Could not find this pic Bunny 05-28-17

[AGD]

general description of the ball in flight photos.

94027

http://www.automags.org/~tomagd/1%20spindata/101.JPG (Broke Link, Leave as Breadcrumb.) - Bunny

[AGD]

Here are the very high res tiff files of the photos. They are about 4 megs each use a cable modem. Go hear and download the whole subdirectory. DO NOT POST these files for discussion in the threads!! Use theme for examination only!! Use the JPG's below for posting.


[URL=http://www.automags.org/~tomagd/1%20spindata/[/URL]

AGD

[AGD]

smaller JPG's of the data pages.

http://www.automags.org/~tomagd/1%20spindata/smoke1_lg.jpg
94013


Ball shot into smoke stream.

http://www.automags.org/~tomagd/1%20spindata/smoke2_lg.jpg
94014

http://www.automags.org/~tomagd/1%20spindata/smoke3_lg.jpg
94015

[http://www.automags.org/~tomagd/1%20spindata/shotpaterns2_lg.jpg
94018

http://www.automags.org/~tomagd/1%20spindata/shotpaterns_lg.jpg
94019

http://www.automags.org/~tomagd/1%20spindata/layout1_lg.jpg
94056

94017
http://www.automags.org/~tomagd/1%20spindata/101.JPG

94057

94058

[AGD]

more stuff

http://www.automags.org/~tomagd/1%20spindata/explo1_lg.jpg
94055


ball exploding in flight
http://www.automags.org/~tomagd/1%20spindata/303_lg.jpg
description of strobe positions
94054



actual in flight data shots
http://www.automags.org/~tomagd/1%20spindata/114_lg.jpg
94022

[AGD]

94034
http://www.automags.org/~TomAGD/1%20spindata/114-3d_lg.jpg
3D interpretation of ball position in flight path. Upper right circle represents impact points, other circles denote postions in flight measureed in strobe shots. These are cad drawings to scale of the shooting range and strobe positions. If I remember right the shooting distance was 60 ft.

94032
http://www.automags.org/~tomagd/1%20spindata/114side_lg.jpg
Side view of same

94033
http://www.automags.org/~tomagd/1%20spindata/114axis_lg.jpg
On axis view of ball flight.

94053

[AGD]

http://www.automags.org/~tomagd/1%20spindata/101b.jpg

94035

http://www.automags.org/~tomagd/1%20spindata/102_lg.jpg

94036

More real data.

[AGD]

THE TIFF FILES FOR THE PAINTBALL SPIN PICS CAN BE FOUND HERE:

spin data (http://www.automags.org/~tomagd/1 spindata )

[AGD]

Recharge rates for RT valve and popular tournament markers here.

Recharge rates (http://www.automags.org/~tomagd/1%20chargedata/)

Bunny: Check the file name to determine type of marker

94046
94043
94040
94037
94047
94044
94041
94038
94045
94042
94039

[AGD]

RT recharge rate, graph spans one second.

http://www.spectrashift.com/AGD_DATA/retro950cp.jpg

94048

[AGD]

popular tournament gun vert reg, graph spans one second.

http://www.spectrashift.com/AGD_DATA/ang800lp.jpg

94049

[AGD]

RT runaway mode two shots, graph covers one second.

http://www.spectrashift.com/AGD_DATA/retro950ap.jpg

94050

[AGD]

Angel, NOTE graph spans 10 seconds.

http://www.spectrashift.com/AGD_DATA/ang800mp.jpg

94051

[AGD]

Angel in rapid fire, one second.

http://www.spectrashift.com/AGD_DATA/ang800fp.jpg

94052

[AGD]

Have Blue Data

Could not find pic AGD 10-11-06
Could not find pic Bunny 05-28-17

[litestab]

what type of camera was used for these photos?

[Star_Base_CGI]

Any 35 MM camer will work.

However you need a setup designed by Egerton Strobe.

You leave the shutter open in a dark room.
Than you hook a strobe up to a sound relay with a delay.
When the gun is fired the strobe fires on a delay and catchs the ball in midair. The flash puts it to film.

Thats how Im guessing they did it.
They can say Im wrong but I probably am not.

[litestab]

i'll have to try it.

[elvisbott]

Some of the images are not viewable.

Have you done the same tests on AKA markers, Shockers (new and old), et cetera?

This data thread is a brilliant idea. More information is always more fun.

[Wes Janson]

Interesting images...although there are a number of broken links/removed files. Here's my question:

What gun was used for the ball in flight test photos? More importantly, what caliber was the barrel, and what type of paint was that?

Can you explain how you created the photo setup? I have no experience at analyzing photographs, but it looks like it's a single image created by exposing the film at millisecond intervals. However, at was distance was the camera from the path of the ball, and the barrel? What was the positioning of the mirror in relation to the path of the ball, and at what inclination? I see the markings remaining the same for the ball in the top image seen by the camera, but, the reflected images appear to show rotation. I'm not sure whether I'm seeing a rotation of the ball or the result of different camera angles as it flies past. It looks like the image is showing the ball rotating slowly clockwise along the barrel's lengthwise axis. Is there any chance of more photos from the same test? I wish I had found AO sooner, as all of this is ancient history, but it is quite an incredible read. Thank you for doing these tests and posting your results to us here.

[AGD]

Links fixed 1-15-04

AGD

[SlartyBartFast]

Figured this belonged in the Data thread.

http://www.flometrics.com/services/cylinder/cylinder.html

The high velocity one shows vortex shedding in all it's nastiness.

Go to the homepage. Understanding paintball IS rocket science! :D

[Jack & Coke]

from: http://www.munkies.net/ppig/viewtopic.php?t=3091




"Cargo" wrote:

Laser Tripping :)

Alrighty, here we go. I have 6 photos crop'd and sized for display. No pics of the setup yet. I got 20 exposures, but about 10 of them are just the ball with no powder/co2 for referencing the air motion. I plan on doing another roll with what I've learned so far. Mainly that I need to control the amount of powder I put in the porting to create the right shot. So without further delay..

These two shots show the actually CO2 air burst following the ball out of the barrel. You'll notice (or maybe not on the resize) that the white cloud only extends about 1/2in back into the barrel. These were firing's 2 & 3 off a fresh 12gram. Firings 3 & 4(not shown) shows wisps of condensed CO2 also, but very slightly.

CO2 Push1
http://users.erols.com/cralle/co2push1.jpg
CO2 Push2
http://users.erols.com/cralle/co2push2.jpg

This pic, again with my mod'd hack job CCI barrel, shows more air current with a small amount of powder.
http://users.erols.com/cralle/ModBall2.jpg

And finally, the creme de'la creme.. (if only I had set the focus better, argghhh)

Three progressive shots with pretty good powder control. You can see the laser very well in these.

The ball has not exited yet. The pre-expelling powder set off the flash. Very cool.
http://users.erols.com/cralle/StockBall1.jpg

The ball just exiting the barrel.
http://users.erols.com/cralle/StockBall2.jpg

The ball 1 inch down range. Again, due to different baby powder loads it's hard to make a good comparision.
http://users.erols.com/cralle/StockBall3.jpg

So there you go. I'll probably stick another couple up here later, but these are the best I think.

Did I tell you I'd catch the ball or what? :D

[Wes Janson]

The 4th shot clearly shows that the ball pushes a significant amount of air out the end of the barrel before exiting.

[tae]

I was giving this thing a read and it seems the links are down(again?).
Solid information is seeming harder to find :confused:

[noahyay]

I would really like to see the graphs if they exist still...

[Faku]

Where you get it???

[bjjb99]

Thanks for fixing the paintball spin pics and the pressure plots, Tom. :)

BJJB

[blueshifty]

THE TIFF FILES FOR THE PAINTBALL SPIN PICS CAN BE FOUND HERE:

spin data (http://www.automags.org/~tomagd/1 spindata )

Anybody know where this file can be found?

[SilverJR]

Possible to fix the links or possibly provide me with the source files?


I <3 Data

[Menace_AO]

^^^^^^ I would also add to this chorus.

[Bunny]

Necropost. I have a bunch of these pictures. Back in 2002, TK had to compress most of the pictures. I will try to reupload with a better resolution. Check the first page for a few updates.

[Menace_AO]

:bounce::hail:

[Bunny]

I restored thread the best I could. Enjoy!

[Menace_AO]

:hail:

Thank you!

Now if we can only track down the rest of that data.

Just don't want to let this stuff slip away beyond recovery.


Am constantly reminded how much TK did to advance this sport, and how much of the history of paintball ever since has been a parade of people forgetting what he did, making silly mistakes/claims on the basis of that ignorance, and then, to correct the problem, rediscovering a small fraction of what he already put out there.

[BigEvil]

http://i0.kym-cdn.com/photos/images/newsfeed/000/517/111/fbd.jpg


..and here is why we see the RT mag was far superior to the competition. I would love to see it vs some newer guns.

Hey Menace, maybe we should steal Carl Jr's Virtue chrono and put some strings over it and compare a few different guns? We have enough :D

[Menace_AO]

I'm down. :headbang:

[Laku]

Vortex shedding link was still found from wayback machine. https://web.archive.org/web/20030728175249/http://www.flometrics.com/services/cylinder/cylinder.html

[bjjb99]

Okay... found the larger versions of the paintball spin data that Bunny has re-uploaded. The larger versions are in .tif format, and I have uploaded them in the following location:

http://www.pbase.com/bjjb99/historic_paintball_data

Please download them and use them.

I have some old analyses of the spin data indicating that spin alone could not explain the deviations from straight-line flight seen in the strobe images. It's in a format that my current computer can no longer read (gotta love 15-year-old file formats!). Working on converting it to something more modern.

BJJB

[Menace_AO]

Nice. Thank you!