donperry Posted February 25, 2012 Share Posted February 25, 2012 One of the problems I have with BP is that the sulfur stinks and it leaves residue. So I have a new formula for my deployment charge. I tested this in ProPep to get the right temperature and ISP for pressure. Thought not as fast and strong as original BP, it is ok as it was not designed for that! 71K /23C/ 4 sulfur I grind the charcoal in coffee grinder, run it through a strainer to get only the finer particles, then weigh out 23 gramsnext, weigh 71g kno3 and 4 sulpher. add some water in a frying pan, mix up the ingredients and boil it off. When it's about to go dry on you (looks mushy) quickly turn of the heat and continue stirring until it is dry. This is not recrystallization but instead just means I've been using to get the components mixed close together, as I dont own a ball mill. here is a video of the results. http://www.youtube.com/watch?v=0-LPPzFyWyY&feature=g-upl&context=G2238cceAUAAAAAAAAAA. I've been using the traditional piston (not dan polino's own) with good result. Now i'm even considering using no piston. To build up pressure i place the BP in a small paper packet that is glued tight. I call it the deployment purse. Link to comment Share on other sites More sharing options...
allrocketspsl Posted February 26, 2012 Share Posted February 26, 2012 One of the problems I have with BP is that the sulfur stinks and it leaves residue. So I have a new formula for my deployment charge. I tested this in ProPep to get the right temperature and ISP for pressure. Thought not as fast and strong as original BP, it is ok as it was not designed for that! 71K /23C/ 4 sulfur I grind the charcoal in coffee grinder, run it through a strainer to get only the finer particles, then weigh out 23 gramsnext, weigh 71g kno3 and 4 sulpher. add some water in a frying pan, mix up the ingredients and boil it off. When it's about to go dry on you (looks mushy) quickly turn of the heat and continue stirring until it is dry. This is not recrystallization but instead just means I've been using to get the components mixed close together, as I dont own a ball mill. here is a video of the results. http://www.youtube.c...cceAUAAAAAAAAAA. I've been using the traditional piston (not dan polino's own) with good result. Now i'm even considering using no piston. To build up pressure i place the BP in a small paper packet that is glued tight. I call it the deployment purse. hum,I like the smell of bp Link to comment Share on other sites More sharing options...
dagabu Posted February 26, 2012 Share Posted February 26, 2012 hum,I like the smell of bp Yea, me to! Don, have you tried sulfurless BP? -dag Link to comment Share on other sites More sharing options...
Potassiumchlorate Posted February 26, 2012 Share Posted February 26, 2012 Every real pyro likes sulfur. Link to comment Share on other sites More sharing options...
gregkdc1 Posted February 27, 2012 Share Posted February 27, 2012 Have you ever tried the crimson powder like on Nakka's web page? http://www.nakka-rocketry.net/articles/Crimson_powder.pdf It is my favorite deployment powder, for exactly the reason you mention. I find that because it is cooler than BP it is less likely to burn holes in your parachute and it seems to pop better than BP when confined. Last don’t try to harvest ascorbic acid from vitamin tablets the health food stores usually sell 100% pure ascorbic acid. Link to comment Share on other sites More sharing options...
dagabu Posted February 27, 2012 Share Posted February 27, 2012 (edited) It is my favorite deployment powder, for exactly the reason you mention. I find that because it is cooler than BP it is less likely to burn holes in your parachute and it seems to pop better than BP when confined. Last don't try to harvest ascorbic acid from vitamin tablets the health food stores usually sell 100% pure ascorbic acid. I had seen that too some time ago and completely forgotten about it. Thanks Greg! AMAZON has it too: AMAZON -dag Edited February 27, 2012 by dagabu Link to comment Share on other sites More sharing options...
Potassiumchlorate Posted February 27, 2012 Share Posted February 27, 2012 I read in Dr. Butbush's book that they used perfume in some fireworks in the early 19th Century. Link to comment Share on other sites More sharing options...
dan999ification Posted March 1, 2012 Share Posted March 1, 2012 as a solvent?you gotstsa love the smell of bp. dan. Link to comment Share on other sites More sharing options...
Potassiumchlorate Posted March 1, 2012 Share Posted March 1, 2012 No, not as a solvent, probably so the ladies should like the smell of the fireworks. Link to comment Share on other sites More sharing options...
warthog Posted March 2, 2012 Share Posted March 2, 2012 I even shoot BP guns with Elephant BP because it is extra smelly, I love the smell of BP (in the morning). I guess it takes all types though. It will men just a tiny bit less acid rain too if you make it your way. Link to comment Share on other sites More sharing options...
donperry Posted March 6, 2012 Author Share Posted March 6, 2012 LOL. You guys,....funny I tried the crimson powder, to me it was too powerful and too dangerous to make. The orderless BP, or low surfer bp worked just fine I tried about 1.5-2 grams grams and the rocket disappeared :-o Link to comment Share on other sites More sharing options...
WSM Posted March 9, 2012 Share Posted March 9, 2012 LOL. You guys,....funnyI tried the crimson powder, to me it was too powerful and too dangerous to make. The orderless BP, or low surfer bp worked just fine I tried about 1.5-2 grams grams and the rocket disappeared :-o I live too close to the California coast so all I can find is high surfer BP!!! WSM Link to comment Share on other sites More sharing options...
californiapyro Posted March 9, 2012 Share Posted March 9, 2012 my ultimate favorite pyro smell is burnt BP on hulls... reminds me of the spent consumer stuff I loved when I was younger Link to comment Share on other sites More sharing options...
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