enanthate Posted November 3, 2014 Posted November 3, 2014 RED Sr(NO3)2 54Sulfur 20 Mg/Al 60mesh 12 Dextrin 5Parlon 10 GREEN Ba(NO3)2 54Sulfur 20Mg/Al 60mesh 12Dextrin 5Parlon 10 WHITE Ba(NO3)2 51Sulfur 19Mg/Al 60mesh 12Mg/Al 200mesh 6KNO3 7Dextrin 5 Notes: Adjust Mg/Al particle size and ratio(s) to tweek flash rate. Anyone tried these yet?Otherwise I will try it in a couple of days.
dagabu Posted November 3, 2014 Posted November 3, 2014 I never got a strobe from the red or green both worked OK for a colored fuel with a small benzoate boost in the first increment though.
dynomike1 Posted September 23, 2015 Posted September 23, 2015 (edited) Mumbles, Have you tried these? They do tend to have a shimmering quality but aren't too bad for a non-AP comp. It's a modification of the common Ba(NO3)2 / KNO3 white formula (listed last). RED Sr(NO3)2 54Sulfur 20 Mg/Al 60mesh 12 Dextrin 5Parlon 10 GREEN Ba(NO3)2 54Sulfur 20Mg/Al 60mesh 12Dextrin 5Parlon 10 WHITE Ba(NO3)2 51Sulfur 19Mg/Al 60mesh 12Mg/Al 200mesh 6KNO3 7Dextrin 5 Notes: Adjust Mg/Al particle size and ratio(s) to tweek flash rate.This is my test for the above red strobe. It was a 3" plastic shell 4G of 70/30 MCRH 5:1. The star was 1/2" pumped, everything was milled together except the 60-100 Mgal. I am not sure what went on they looked like they lit and blew out. on the other hand in slow motion you can see them blinking. The strobe shell is the second one in the video, maybe some of you can figure out what was going on. Edited September 23, 2015 by dynomike1
Mumbles Posted September 23, 2015 Author Posted September 23, 2015 Mike, you might want to set that video to public.
zan89 Posted September 23, 2015 Posted September 23, 2015 Last time i was mixing white strobe, i try smth. and add copper oxide to maybe get some more bluish colour but on the end the comp with 5% copper was much slower burning and the blinking rate was much slower, more on- off..Here are wideos with and without copper oxide, but it is not a star but dry composition.. https://www.dropbox.com/s/p1t30ts4f9rwwlo/Brez%28hitreje%29.3gp?dl=0 normal comp. https://www.dropbox.com/s/mrlqup4bwowp0cp/Z%20%28pocasno%29.3gp?dl=0 with added 5% copper oxide
dynomike1 Posted September 23, 2015 Posted September 23, 2015 (edited) I think it will play now. After watching the video 15 more times i'm thinking the stars might not be as dry as i thought. Not sure. Edited September 23, 2015 by dynomike1
dynomike1 Posted October 26, 2015 Posted October 26, 2015 Final test on these stars. I used strontium, or Barium nitrate. Some with acetone some with 75/25 water alcohol and the best i can get out of them is a little flitter. Guess ill just stay with the white ones for now.
Peret Posted October 27, 2015 Posted October 27, 2015 In Mike's video, the initial break is the prime burning off. It looks like most of the stars didn't take fire. You can see some of them flash but (in my opinion) too slowly for a shell burst, unless it's a 6 or bigger that goes really high.
dynomike1 Posted October 27, 2015 Posted October 27, 2015 I have some of those stars left over, i will build another shell and video it when it quits raining.
dynomike1 Posted November 1, 2015 Posted November 1, 2015 Here is my last test on Nitrate strobe. The red ones were cut with Acetone, and the green/white as per my camera were pumped with 75/25. Both were 1/2" stars. Run the video up to about 13sec. it is damp and we had some problems with uncoated fuse.https://youtu.be/wLQMPL90Xdk
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