Doc's Angel Predator Video

[Doc Nickel]

Click Here for some fresh new high-speed Angel madness.

The average if that last string was 30.6 BPS, with a high peak of 45.5/sec, and a low of 18.2/sec.

Let me know what'cha think.

Doc.

[trevorjk]

i think this will make zman happy

of course lets see a video of that angel on the machine with paint going through it.... then ill truly be impressed, other wise it justs seams like another kid/adult shooting his angel

[Blazestorm]

Didn't seem to be 30bps... *checks audio on his editor...*

EDIT - Seemed like around 20 w/ paint, Definately wasn't 30.

The best way to test paint w/ speed is to shoot off into nothing, so you can analize jsut the gun shooting, no background impacts or music, sound, talking, noises etc. because those can mess up the analisys.

So ya

[Doc Nickel]

Sorry, my chrono was custom-built to analyze ROF. I believe it to be within 3% or better at the moment. It reads actual balls fired, not sound or cycles. Those numbers are within 5 to 8 FPS of a recently-factory-calibrated Radar Chrony, and it uses the same sensors and timers for the BPS.

This is, point in fact, why I made it. I was tired of the best way to analyze ROF being measuring a sound file, which is notoriously inaccurate for a number of reasons.

Doc.

[eNder159]

makes sense...+ doc knows his crap so i wouldnt deny his knowledge

[trevorjk]

makes sense...+ doc knows his crap so i wouldnt deny his knowledge

i dont deny in the last shot of the video when its on the machine that it isnt doing 30 bps.... but with out seeing the paint go through the marker, im still skeptical

nothing against doc

[Doc Nickel]

The gun wasn't changed, other than setting the fire mode, between any of the three. And I filled the tank after the Bronco bit- you could hear it start to stutter as the tank went dry- it was down to about 900 psi by then.

The chrono compares every pair of balls in the string- actually, it analyzes each ball, but compares every two for the BPS calculation. As in, Ball 1 and Ball 2 are compared to give ROF reading 1, Ball 2 and Ball 3 are compared to give ROF reading 2, and so on.

Because of this, and due to the apparently inconsistent nature of the loader (as the drive cone spring winds and unwinds, the motor lugs to catch up then spins free as the spring unwinds, etc- though I'm kinda guessing on this part) you might have two shots very, very close together. The last string had a peak of 45.5 BPS, meaning there were two shots that, if they could be fired at theat same rate for a full second, would equal 45 balls being shot.

But that doesn't happen. Two might be very quick due to whatever loading factor (perhaps both the motor and the cone spring were at max tension when the bolt opened?) the next two are much slower- the "low point" in the string was 18.2 per second (extrapolated.)

We're still playing with the software, and I do have some issues with some of it- it's by no means perfect yet. But until some of those 'issues' are tested and either proven or disproven, I believe the thing is within three percent or better, of accurate. (One of those issues might blow that completely out of the water, but we need to test for it first.)

Doc.

[Blazestorm]

Well that can make sense, but 45bps 2 shot burst doesn't mean much imo, If it was 45bps for an entire hopper, that would actually mean something.

I mis-interperted how you were reading the ROF's

[Doc Nickel]

i dont deny in the last shot of the video when its on the machine that it isnt doing 30 bps.... but with out seeing the paint go through the marker, im still skeptical

nothing against doc

-The chrono doesn't, in fact can't, make a reading without detecting a ball. It's like shooting air over a Radar Chrony- if there's nothing for the chrony to read, it doesn't give you a reading.

It was difficult to get both the laptop and the shooter in the picture, and have the laptop screen readable. And since I was doing this myself, with the camera on a tripod, I elected to just show the laptop screen. I have a small target out the back door of the shop that I shoot at- while I popped the target, the camera recorded the screen.

Again, same loader, same paint, same gun, same barrel, same tank in all three scenes.

Only thing I changed was the first one was semi with a low debounce (I have slow fingers, and I'm demoing the gun, not my hand) and the other two were in full auto.

Doc.

[Doc Nickel]

...but 45bps 2 shot burst doesn't mean much imo, If it was 45bps for an entire hopper, that would actually mean something.

-Oh, I know. That's why I noted that the average for the string was given as 30.6 BPS. The fastest pair (the peak ROF calculated) equalled 45.5 BPS, and the slowest pair (the lowest ROF calculated) was 18.2 BPS.

As I said, there's still some issues with the system, it's still very much a prototype. Been working on it off and on for a year.

I believe they're very close, but don't take the numbers as gospel just yet.

Doc.

[Koosh]

Going that fast, what was the consistancy it was shooting?

[Skoad]

little off topic....

how are the posters coming along?

[Carbon]

Those numbers are within 5 to 8 FPS of a recently-factory-calibrated Radar Chrony, and it uses the same sensors and timers for the BPS.

woot

[FallNAngel]

Doc perhaps it's just me, but I personally think a better way for bps comparison would be to compare ball 1&2, 3&4, etc as you are now, but have it start and stop and avg that number at the end... or give slowest, avg, highest bps reading. Having it give the two fastest shots is nice, but I think more people are interested in seeing that they got a consistent 15bps, not an inaccurate 25bps.

[BrockSampson]

Dang it Doc! Now I might have to buy one just to see...
Grrrrrrrr. Take that, ya ornery ol' bear!!!