Willow type metal streamer comps

[swervedriver]

I want to make some willow type streamers to roll over color cores, I've tried blonde streamer, slow gold, and willow diadem, all very nice. I was wondering if anyone has experience with this "kamuro" composition. It's a willow type charcoal comp but very heavy with metal, but I'm hoping it's like the blonde/gold japanese metal streamers with long delay I've seen videos of-

 

 

Name: Kamuro

Source: Internet

 

Charcoal, mixed  34 

Potassium Nitrate  29

FerroTitanium, 40-325 mesh  25

Sulfur  6

Dextrin  6

 

Thanks for any advice or feedback

[Mumbles]

I've made it once before. It comes from Hardt on page 176. It burns quite slow with a very nice tail. I fired a few 4" ball shells of 1/2" pumped stars, and got a nice round break followed by good droop. I very much like the formula. I fired the rest out of a 3" mine that was kind of under lifted. The stars went up around 100-150 feet and nearly came back to the ground.

 

I don't remember it well enough to say how similar it is to the japanese streamers. I'd say it's close though. It's listed as "Nishiki Kamuro", meaning brocade willow.

[Karlos]

I am a little interested in kamuro efect, and I must say, that I can´t find composition(Internet) with aluminum(no Ti), which is optimal for ordinary pyromans in Europe....

I need composition, which create this efect type:

(certainly, in the smaller caliber :-)

This is maybe only easy composition like willov with small amounth of aluminum or titanium, but what another additions?(sodium bicarbonate, like in the glitter or antimony trisulphide)

 

Karlos

Edited June 2, 2009 by Karlos

[FREAKYDUTCHMEN]

Nice brocades karlos, you'll just need the right (amount of) titanium and a flashbreak.

The kamuro probably burns slightly a bit faster than willow. I think Aluminium just wont work.

[Mumbles]

A coarse aluminum might do the trick, but I doubt it would be the same as the traditional titanium or ferrotitanium. Maybe something like a +150 mesh atomized, or a medium flitter at around 5%. Like I said, it might work but give an inferior representation.

[Seymour]

For the bright stars like in that video, I would expect the metal content to be quite high, perhaps fifteen or twenty percent Titanium or ferrotitanium. Other than the metal, it is probably just a willow type composition.

 

Extra sulfur, Sodium bicarbonate and other additives will slow it down and perhaps make it a bit more twinkly.

 

 

Edit- I took so long you got in ahead of me Mumbles

Edited June 2, 2009 by Seymour

[Karlos]

Dutchman: Flash break? :-) I thing, KP burst on puffed rice create mega---boom.

I will use pine charcoal, but what percentage of Charcoal and Nitrate? The willow type of BP composition burn with low temperature and slowly. What aluminum particles and their utilize in efect? I don´t want use Ti, is expensive and luxus for me, but I have spherical fine aluminum, bright fine powder...will be work?

I try this:-)

Seymour: 15 - 20% this is too much, little profusion.

Buell slow gold look good, will be work with aluminum.......?

See Nagaoka Phoenix hanabi and final Brocade shells, this is giant firework....

their white chrysanthemum.....nice.

thanks.

[FREAKYDUTCHMEN]

100% sure those are flashbreaks, quite easy to see the bright flashes, KP doesn't give a lot of light output.

[Seymour]

Freakydutchmen, do you mean Karlos's first or second video?

 

if you mean the first video, it would not surprise me if they were flash boosted, most of the higher end Chinese brocade crowns I've seen have been, but they look KP burst to me. They are indeed bright when they burst, but I personally put that down to the maximum density of stars combined with the maximum surface area of the stars when they burst. Lots of Titanium in one place. If you mean the second video, they definitely are flash boosted!

 

 

Karlos, you do not have to use that much Titanium to get a lovely brocade effect, but that is what I believe the stars in the video contain. Lovely streamers can be made with Aluminium, but to get them exactly like the video you will need Titanium or FeTi. The Aluminium streamers will not be quite the same.

 

I personally use a composition very similar to Buel's 'Slow gold" which contains much less Titanium, only 7%.

[Karlos]

http://vinz.jp/Fireworks_video_Tsuchiura76_93_5_1ch.html

Look this wideo, mainly brocade poka - horsetails. They have perfect tail....