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lemon yellow stars


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#1 pex

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Posted 13 July 2014 - 02:16 PM

Hello,
I am looking arround for a nice yellow star. And seen a few shells on youtube. They called. Lemon yellow. Does somebody know this compesition?

http://m.youtube.com...h?v=WNBXOVwweoM

Thanks allot

Pex

#2 Niladmirari

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Posted 14 July 2014 - 12:44 PM

Compare:

 

4220801m.jpg

 

yellow green
 
I mixed green 88% and yellow 12%.

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#3 AzoMittle

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Posted 30 November 2014 - 02:46 AM

 

Compare:


 
 
I mixed green 88% and yellow 12%.

 

 

Which green and which yellow?


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#4 FlaMtnBkr

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Posted 30 November 2014 - 12:46 PM

A good yellow is a mix of red and green. A formula where barium and strontium are exchanged would be a good starting place. Like independence red/green or the red rubber stars. 55 parts green and 35 parts red is a good starting point and adjust to your tastes. This is an optical yellow versus a sodium yellow and should be closer to the lemon yellow you're looking for.

Edit: no, they don't add up to a 100

Edited by FlaMtnBkr, 30 November 2014 - 12:47 PM.

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#5 Col

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Posted 05 December 2014 - 02:25 PM

75% green and 25% red produces a decent yellow, if you push the red percentage up you can get a half decent orange.



#6 rogeryermaw

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Posted 05 December 2014 - 03:31 PM

mr niladmirari was referring to a mix of the colors from this thread.

 

http://www.amateurpy...9416-color-mix/



#7 Mumbles

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Posted 06 December 2014 - 12:58 PM

As far as mixing colors, I use about 62:38 Green:red for my yellows, and 45:55 for my oranges.  You can play to get the hues you like.  It may depend a little on which formulas you're using too.  Let us know how they turn out. 


Just so you guys quit asking, here is the link to the old forum. http://www.xsorbit2....forum/index.cgi

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#8 GalFisk

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Posted 10 December 2014 - 06:17 AM

Veline yellow (55 Veline green, 45 Veline orange) also gives you a lovely lemon yellow: http://www.pyrodata....nes-yellow-star

The formula is more complicated than the above suggestions, so it usually only makes sense if you're doing Veline colors anyway. I've only tested a little of it, but I really liked the color - not greenish at all, and not sodium-yellow. Plus, it uses cheap-as-dirt calcium carbonate (chalk) instead of strontium. I imagine that this makes it easier to fine-tune the color as well, as the range is smaller.



#9 whatknot

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Posted 10 December 2014 - 11:22 AM

This may do the trick for you; I got tired of "sodium amber" and tinkered with the addition of "barium green". The formula can be rolled or cut, 35% alcohol works great, but a graded prime is recommended (or a hot inner prime). The hexamine may be ommited but it does help intensify the color a bit.

 

 

BRIGHT 'REAL' YELLOW STAR Color is a true lemon yellow, not amber Barium Nitrate 40   Potassium Perchlorate 14   MgAl, -200 or -325 m 12   Saran 10   Cryolite 8   Red Gum 4   Sulfur 4   Hexamine 4   Dextrine 4     % 100  

#10 FlaMtnBkr

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Posted 11 December 2014 - 09:40 AM

Wouldn't that still be a sodium yellow with all that cryolite in it?

#11 Mumbles

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Posted 11 December 2014 - 09:57 AM

The hue will be different than the typical bare sodium yellow, which is really what most people want to avoid. 


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.

#12 whatknot

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Posted 12 December 2014 - 07:56 AM

As much as we see streetlight "sodium" lights I like to avoid bare sodium yellow too!

 

From some ole notes a formula with no perch, 58% Ba(NO3)2, and 7% cryolite produced a yellow-green... the formula posted, however, produces "a pretty deep color, real lemon yellow- not amber, fast burn, and for some reason having both sulfur and hexamine intensifies color." It has been a while since these were tested but any feedback is appreciated!! 



#13 Pirotex

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Posted 20 January 2015 - 02:26 AM

Organic lemon-yellow composition:

KCLO4 - 30%
Ba(NO3)2 - 35%
S - 21%
Sodium bicarbonate - 4%
Charcoal (airfloat) - 5%
Dextrin - 5%

VIDEO: https://www.youtube....jIZDCDL&index=1

 

Metallic lemon-yellow composition #1:

KCLO4- 30%

Ba(NO3)2 - 30%
PVC 10%
Mg/Al (~ 100 mesh) - 15%
Charcoal (airfloat) - 5%
S - 5% 
Dextrin - 5%
NaHCO3 - + 2%

VIDEO: https://www.youtube....QQRdmAO7jIZDCDL

VIDEO IN SHELL: https://www.youtube....h?v=SOcX8-fAeB4

 

Metallic lemon-yellow composition #2:

KCLO4 -15%

Mg/Al - 20%

Cryolite - 8%

Ba(NO3)2 - 42%

Phenolic resin - 7%

PVC - 8%

VIDEO: https://www.youtube....h?v=gxtic6F5-tc



#14 karvannan

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Posted 30 March 2015 - 08:39 PM

any other lemon formulas without kp please let me know we use kno3 not kp



#15 nt8

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Posted 31 March 2015 - 01:33 AM

any other lemon formulas without kp please let me know we use kno3 not kp

i don't think, that you get good lemon yellow with KNO3. If you want to use nitrates, try to combine barium and strontium nitrate, or barium-nitrate and cryolite/oxalate.  green composition + 5-8% cryolite or oxalate.

Try Gary Smith's parlon yellow, or Ned Gorski's brillian yellow.



#16 AzoMittle

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Posted 28 May 2016 - 11:31 PM

 

This may do the trick for you; I got tired of "sodium amber" and tinkered with the addition of "barium green". The formula can be rolled or cut, 35% alcohol works great, but a graded prime is recommended (or a hot inner prime). The hexamine may be ommited but it does help intensify the color a bit.

 

 

BRIGHT 'REAL' YELLOW STAR Color is a true lemon yellow, not amber Barium Nitrate 40   Potassium Perchlorate 14   MgAl, -200 or -325 m 12   Saran 10   Cryolite 8   Red Gum 4   Sulfur 4   Hexamine 4   Dextrine 4     % 100  

 

 

Can anyone provide a source for this formula, where does it come from? Or is this a whatknot original?


Terminat hora diem; Terminat author opus.
The hour ends the day; The author ends his work.
 
Oh lente lente noctis equi!
Slowly, slowly run oh horses of the night!
 
Perfection does not exist, but that does not mean you cannot work constantly to attain it.
 
The really important kind of freedom involves attention, and awareness, and discipline, and effort, and being able truly to care about other people and to sacrifice for them, over and over, in myriad petty little unsexy ways, every day. . . . The only thing that's capital-T True is that you get to decide how you're going to try to see it. You get to consciously decide what has meaning and what doesn't. . . . The trick is keeping the truth up-front in daily consciousness. -David Foster Wallace


#17 lloyd

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Posted 29 May 2016 - 07:19 AM

I'm sure I've mentioned this, but I prefer "optical" yellows... barium/strontium blends.  They can be tuned to any shade along the green to red line, including some really 'sassy' yellows.

 

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#18 OldMarine

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Posted 29 May 2016 - 08:48 AM

....And the Lloyd rained fire and brimstone upon the Sodiumites....
Lol!
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Come on! Name one other hobby in which you cheer as your money and hard work go up in smoke!

#19 dynomike1

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Posted 01 August 2016 - 01:19 PM

I saw this formula somewhere Lemon Yellow.

Strontium Nitrate 55

MGAL 25

Sulfur 10

Charcoal Air float 5

Dex 5

TI 10

I havent tried it yet so i dont know how it looks.


Edited by dynomike1, 01 August 2016 - 01:22 PM.

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#20 lloyd

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Posted 01 August 2016 - 02:34 PM

Eh... add a chlorine donor and some barium nitrate, and you'll be able to tune the color anywhere from green through the yellows and oranges, all the way to red.  And you'll be able to choose your favorite hue.

 

What you cited does make a yellow color, but I don't find it very pleasing with all those Ti sparks, unless that happens to be what you're looking for.  To me, yellows are prettier when they 'stand alone', clean, with a fairly large flame envelope.

 

Lloyd


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