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Gold Crown Comp


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#1 pyroguy1960

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Posted 13 October 2010 - 06:58 PM

Any one know the comp for these stars? I believe they're called gold crown. Here's a vid that has a bunch of them going off...



#2 dagabu

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Posted 13 October 2010 - 07:43 PM

Mumbles is going to straighten me out on this I am sure but i think they are an aluminum based charcoal star, Takeo Shimizu has a comp that uses lots of Al.

Potassium Nitrate 40
Aluminum, flake, flitters, coarse. -20 mesh
30 Posted Image
Realgar
10 Posted Image
Sulfur 10 Posted Image
Rice Starch (glutinous) 7 Posted Image
Charcoal Airfloat
2 Posted Image
Boric Acid
1 Posted Image
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#3 pyroguy1960

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Posted 13 October 2010 - 08:43 PM

I found this one....seems similar, that's the only thing I don't really like about FAST, it's seems to be starting to show it's age in some of the comps or perhaps some of the chems are more popular in the orient. I know realgear seems to be getting harder to source.

Golden wave #1 - #3
Potassium nitrate 37
Aluminium (flitter) 47
Antimony trisulfide 9
Boric acid 1
SGRS 6

And suposedly sufur can be subed for the antimony and I would probably use dexrtin instead of SGRS.

Seems like the bottom line for this effect is KNO3 for oxidizer and lots of course flitter.....




#4 pyroguy1960

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Posted 13 October 2010 - 08:55 PM

Also do you need the Boric Acid if the flitter AL is coated?

#5 Xtreme Pyro

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Posted 13 October 2010 - 09:26 PM

What about the Slow Gold comp? Ive seen videos of these stars and it looks similar to the video you posted defiantly a beautiful star.

Potassium Nitrate: 36
Charcoal Airfloat: 29
Charcoal, 80 mesh: 14
Sulfur: 9
Titanium, sponge, 40-80 mesh: 7

Dextrin: 5

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#6 Mumbles

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Posted 13 October 2010 - 09:43 PM

I've actually never seen the golden wave formulas in person. It's really a shame I had my accident. I had just gotten some realgar to try out that formula. It's supposed to be quite a bit more elegant than the sulfur or antimony trisulfide versions.

It does looks like a charcoal and aluminum streamer. I've always called them metallized willows, but that doesn't give a distinction between a formula like that and one relying on titanium or ferroti.
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#7 pyroguy1960

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Posted 14 October 2010 - 05:54 AM

Skylighter has some realgear, I'll get some and try both comps and report back in a few weeks....

#8 Karlos

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Posted 14 October 2010 - 11:35 AM

Shells in the video contains brocade type formula, with titanium or ferrotitanium, not golden wave, not golden chrysanthemum. These compositions are quick burning types, and brocade not. Slow gold can be similar.

#9 pyroguy1960

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Posted 14 October 2010 - 12:06 PM

can you hit me with a formula? Is that the consensus?



#10 pyroguy1960

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Posted 14 October 2010 - 12:08 PM

Found this for slow gold

Potassium Nitrate: 36

Charcoal Airfloat: 29

Charcoal, 80 mesh: 14

Sulfur: 9

Titanium, sponge, 40-80 mesh: 7

Dextrin: 5



#11 Xtreme Pyro

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Posted 14 October 2010 - 12:10 PM

Found this for slow gold

Potassium Nitrate: 36

Charcoal Airfloat: 29

Charcoal, 80 mesh: 14

Sulfur: 9

Titanium, sponge, 40-80 mesh: 7

Dextrin: 5


That's the same formula I posted above. Like I was saying before, it looks very similar to the effect your looking for.

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#12 pyroguy1960

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Posted 14 October 2010 - 12:18 PM

gotcha, sorry I missed that....

#13 pyroguy1960

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Posted 14 October 2010 - 12:55 PM

in further researching, the slow gold looks more like willow diadem no?





I'm gonna have to try each and every one until I find the effect that mirrors those shells in the original video aren't I. :(

#14 AdmiralDonSnider

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Posted 14 October 2010 - 01:13 PM

I´m not an expert either, but the color of these as well as the short hang time doesn´t make them seem like brocade shells.

Shimizu´s "wave" comps may be worth a try - as already suggested - and antimony sulphide may be tried as a realgar replacement.

Maybe we are simply not up to date on this one. The formula could be way different from all we have at hand...

#15 dagabu

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Posted 14 October 2010 - 01:53 PM

Who has time to take a look at FAST? I think Takeo Shimizu can answer this question quickly for us.
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#16 Mumbles

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Posted 14 October 2010 - 02:05 PM

Slow gold, and every "brocade" I've ever seen, is kind of twinkly. They have a slight firefly transition effect. I really don't think there is any titanium in those, or if there is, it is quite fine.

I would take a willow and add 15 or so parts of wide mesh range flake or atomized aluminum. I don't know who sells it anymore, but there is a 100-325 mesh bright flake available that may work. Below are two products that might work. The second looks a lot like the bright flake I'm talking about.

http://www.hobbychem...aluminum/Detail

http://www.hobbychem...ht-Flake/Detail

You might need some coarse flake for the terminal end of the tail.
Just so you guys quit asking, here is the link to the old forum. http://www.xsorbit2....forum/index.cgi

The sky is my canvas, and I have 2,113 pounds of powdered paint in the workshop.

#17 pyroguy1960

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Posted 14 October 2010 - 02:08 PM

Here is what was in FAST.

Attached File  Untitled-1.jpg   43.21KB   113 downloads
Attached File  Untitled-2.jpg   79.85KB   103 downloads

#18 AdmiralDonSnider

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Posted 14 October 2010 - 02:47 PM

Anyone willing to post the initial question on rec.pyro? I´m pretty sure they´ll show us the correct path...

#19 Karlos

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Posted 15 October 2010 - 01:33 AM

Another videos from Katakai (kanreki fireworks)
http://www.youtube.c.../59/Ht9V3vafrS8
http://www.youtube.c...h/0/druHeYaHLSU
For me, look like blackpowder - metal fire dust, long-life stars. Weak light, slow burning, partly twinkling sparks(slow glitter). Japanese often use ferrotitanium but maybe it´s aluminum. Aluminum often create more silver efect.


jms04081974: you can find some formulas on passfire, in charcoal streamer stars. (slow gold, gold streamer, nishiki kamuro, golden kamuro)

#20 pyroguy1960

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Posted 18 October 2010 - 05:41 PM

So I stared down this road tonight, the first comp I'm trying is Golden Wave #1 from FAST:

potassium nitrate 37
aluminum course flitter 47
antimony trisulphide 9
boric acid 1
SGRS 6

How do I prime this comp? Seems like it will be hard to light.

I was thinking of doing my usual greenmix w/5% mgal for inner prime, then greenmix for outer layer. Any suggestions? FAST doesn't tell you what to prime it with.




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