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Compositions using only Kno3 charcoal and sulfur


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#1 BPinthemorning

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Posted 01 August 2007 - 03:38 PM

i thought it would be usefull to have a thread for compositions that only use the components of black powder and mabey a dash of dextine.

My contributions:

Chrysanthemum 6 stars (wet pressing required):
- Potassium Nitrate= 55%
- Charcoal = 33%
- Sulfur= 7%
- Dextin= +5%
Produces red fire dust that lasts a shor while, use willow charcoal for longest fire dust time.

Chrysanthemum 8 stars (wet pressing required):
- Potassium Nitrate= 49%
- Charcoal= 40%
- Sulfur= 6%
- Dextrine= 5%
Stars produce a red fire dust that lasts only a shot while, but longer than Chrysanthemum 6. To increase the fire dust time, use willow charcoal.

My lift charge (wet pressing and extencive milling required:
- Potassium Nitarate= 74%
- Charcoal= 14%
- Sulfur= 12%
- Dextrin= +4-5%
An energetic lift, MUST ball mill.

Chrysanthemum of Mystery (wet pressing required):
- Potassium Nitrate= 45%
- Charcoal= 50%
- Dextrin= 5%
Similar to the other Chrysanthemums, but the lack of sulfer creates a different effect.

Thats all i have time for right now. Please post any compositions that use only Potassium nitrate, charcoal, sulfer and dextrin.

#2 Umphrey

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Posted 01 August 2007 - 10:39 PM

Some of my favorites,,
Bill Ofca's Gold Spiderweb star:

Potassium Nitrate 53.571%
Charcoal 32.143%
Sulfur 7.143%
Dextrin 7.143%

Should be ball milled for atleast ten hours and pumped or cut wet.

Takeo Shimizu's Tiger Tail Star:

Potassium nitrate 44%
Charcoal 44%
Sulfur 6%
Soluble glutinous rice starch or Dextrin 6%

Can be screened together from fine chemicals or ball milled briefly with course starting materials. Upon making stars, alcohol should be kept to minimum as the potassium nitrate needs to be partially disolved into the charcoal. Should be rolled or pumped, but can be cut. When cut the stars are weaker and need to be handled gently.

#3 hst45

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Posted 02 August 2007 - 06:38 AM

BP rocket fuel fits the bill; with a pretty standard starting point of 60/30/10 (KNO3/charc/S)
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#4 frogy

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Posted 13 August 2007 - 10:13 AM

I use 75:15:10 for my BP rocket fuel...



Pine charcoal for the Chrysanthemums makes good sparks when it burns, but willow makes more "fire dust" (long lasting tails\stuff sprouting from tails)

#5 Ventsi

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Posted 23 March 2009 - 06:26 PM

I know ,i know im digging up fossils here but i need to say this.

I have found that changing Shimizu 's compositions by adding 2-3 % extra sulfur and and +3% KNO3 greatly improves the effect by making the firedust brighter like using pine charcoal but with every charcoal.
I would only do this when the effect obtained with the charcoal used isnt too great.

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#6 firetech

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Posted 24 March 2009 - 09:49 AM

95/45/15/10 KNO3/charcoal/sulfur/dextrin makes a great charcoal streamer. ball mill for at least 4 hours

95/45/15/10 KNO3/charcoal/sulfur/dextrin makes a great charcoal streamer. ball mill for at least 4 hours



#7 derekroolz

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Posted 08 July 2009 - 01:12 PM

Some of my favorites,,
Bill Ofca's Gold Spiderweb star:

Potassium Nitrate 53.571%
Charcoal 32.143%
Sulfur 7.143%
Dextrin 7.143%

Should be ball milled for atleast ten hours and pumped or cut wet.

Takeo Shimizu's Tiger Tail Star:

Potassium nitrate 44%
Charcoal 44%
Sulfur 6%
Soluble glutinous rice starch or Dextrin 6%

Can be screened together from fine chemicals or ball milled briefly with course starting materials. Upon making stars, alcohol should be kept to minimum as the potassium nitrate needs to be partially disolved into the charcoal. Should be rolled or pumped, but can be cut. When cut the stars are weaker and need to be handled gently.



so should you use coarse charcoal or fine charcoal
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#8 firetech

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Posted 08 July 2009 - 03:10 PM

Depends what effect you want. I'd use a more reactive fine charcoal, like pine.

#9 flying fish

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Posted 11 July 2009 - 10:15 PM

I just found something kinda interesting...

The Spiderweb star that Mumbles posted...I did some calculations to determine what the equivelents would be if I started with standard meal powder (since that's what I intend to do).

LOL. I think the formula was orginally written this way.

10 parts: meal
1 part: Dextrin
3 Parts: Charcoal.

Adds up to 14. If you take the fractions, you get the exact percentages that Mumbles posted.
I know it's not that profound and I probably sound like I'm rambling drunk. But simple things do amuse me sometimes.

#10 Mumbles

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Posted 12 July 2009 - 08:43 PM

Ofca actually gives 2 formulas. One with lone chemicals, and one with BP. The BP based on is below. It looks like it takes more than just charcoal to get the tail right. It probably would just burn to fast with straight meal like that.

Meal Powder 10
Potassium Nitrate 7.5
Charcoal Airfloat 7.5
Dextrin 2
Sulfur 1
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.

#11 NightHawkInLight

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Posted 12 July 2009 - 09:40 PM

Senko Hanabi Sparkler formula (rough estimation, it varies GREATLY depending on many things:

Potassium nitrate - 45
Charcoal - 20
Sulfur - 35

Video: http://www.youtube.c...re=channel_page

#12 flying fish

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Posted 13 July 2009 - 11:10 AM

Ofca actually gives 2 formulas. One with lone chemicals, and one with BP. The BP based on is below. It looks like it takes more than just charcoal to get the tail right. It probably would just burn to fast with straight meal like that.

Meal Powder 10
Potassium Nitrate 7.5
Charcoal Airfloat 7.5
Dextrin 2
Sulfur 1


In that case the stars I made may just burn way too fast... I used fast willow meal, and milled it for an additional 7.5 hours after adding the charcoal and dextrin!

Oh, and it looks like it was a different member who posted the Ofca formula here, my mistake. I just found it strange that the comp would be listed to 3 decimal places. Hard to believe it is really that sensitive to ratios. That's why I suspected that the original formula might have called for meal powder, since it's incorporation would explain the percentages. But of course, I haven't seen the original formula (or have I?)...

As for Senko Hanabi, I remember someone using that formula for stars, with success. It looked pretty cool...I can't seem to find it at the moment, maybe it was posted somewhere here. Kind of a glitter effect, but with charcoal.

Edit: Here it is: http://www.youtube.c...feature=channel

Edited by flying fish, 13 July 2009 - 11:26 AM.


#13 pyrogeorge

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Posted 13 July 2009 - 01:47 PM

I found this composition

White star:

67. KNO3
31.Sulfur
1.2 Charcoal
4 Dextrin

Has anyone test this composition?is it real white?

#14 derekroolz

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Posted 13 July 2009 - 02:57 PM

I found this composition

White star:

67. KNO3
31.Sulfur
1.2 Charcoal
4 Dextrin

Has anyone test this composition?is it real white?



is it 1.2 or 12 for the charcoal
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#15 dagabu

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Posted 13 July 2009 - 06:31 PM

Senko Hanabi Sparkler formula (rough estimation, it varies GREATLY depending on many things:

Potassium nitrate - 45
Charcoal - 20
Sulfur - 35

Video: http://www.youtube.c...re=channel_page


Dang! I was going to post that! :lol:

I can only get them going the way I want if I use a certain tissue, generic tissue wont work, it falls off.
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#16 NightHawkInLight

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Posted 13 July 2009 - 09:50 PM

Dang! I was going to post that! :lol:

I can only get them going the way I want if I use a certain tissue, generic tissue wont work, it falls off.

What ratios do you use? And do you have videos? Mine are the only I have seen of non factory senko hanabi's. I would like to see your result.

#17 Mumbles

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Posted 13 July 2009 - 10:04 PM

Well, the original ofca formulas are given in production size batches, 28lbs each. He milled it for 24 hours in a cement mixer with bocce balls. I took this to meal a good milling such as you would need for good BP, so I went 8-12 hours with my ball mill.

The lone chemical one is below. The decimal points came from conversion to percent.

KNO3 - 15
C - 9
S - 2
Dex - 2
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.

#18 NightHawkInLight

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Posted 13 July 2009 - 10:32 PM

Well, the original ofca formulas are given in production size batches, 28lbs each. He milled it for 24 hours in a cement mixer with bocce balls. I took this to meal a good milling such as you would need for good BP, so I went 8-12 hours with my ball mill.

The lone chemical one is below. The decimal points came from conversion to percent.

KNO3 - 15
C - 9
S - 2
Dex - 2

For Senko Hanabi? Strange composition. The dextrin is an odd additive, I never tried binding them. I may try now. Perhaps rolling them and then dampening them with tissue and all. That could change the composition needed entirely! Haha, what a pain they are to figure out... :rolleyes:

#19 Mumbles

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Posted 13 July 2009 - 11:27 PM

I meant the spider star. I might have misunderstood the post about the 3 decimal points.
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.

#20 pyrogeorge

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Posted 14 July 2009 - 06:20 AM

is it 1.2 or 12 for the charcoal

i don't remember where i find it,so i don't know if it is 1.2 or 12..

If someone else know this composition maybe can help.




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