dangerousamateur Posted June 26, 2016 Posted June 26, 2016 Please give me some numbers. I know this depends on a lot of factors, charcoal type, pressure ect. What does your notebooks say? How much fuel can you approximately press into a standart 3lb BP motor?How much more for nozzleless?
dagabu Posted June 26, 2016 Posted June 26, 2016 Tough question to answer! According to my notes, my last #3, nozzleless, Universal Hybrid, all BP motor (2012) was 158g of fuel. That sounds right because I recall only getting three motors from a pound of BP. Using a standard BP tool set, I bet its closer to 200g.
dangerousamateur Posted June 26, 2016 Author Posted June 26, 2016 So about 200g.Is that nozzleless? I just need a strong engine for my projekts, and since here in europe perchlorate is beginning to get rare I have to get power from BP alone. Thus I need big motors. This will eat up a lot nitrate though.
WSM Posted July 26, 2016 Posted July 26, 2016 (edited) My traditional 3# BP rockets took 109 g. of BP propellant (Your Milage May Vary). I haven't made end-burn three pounders yet (unless you count whistle rockets, but I use 1/2 length tubes for them [5" long, same ID and OD]) WSM Edited July 26, 2016 by WSM
ddewees Posted July 28, 2016 Posted July 28, 2016 http://i1149.photobucket.com/albums/o588/SaltLakeAreaPyros/20131207_125529_zps6yso9eqr.jpg
dangerousamateur Posted July 30, 2016 Author Posted July 30, 2016 (edited) I see your numbers vary a lot. Using a standard BP tool set, I bet its closer to 200g.Dagabu, is that nozzleless too? Compared to WSMs statement of 109g its a huge difference ddewees:how much nozzle material is in there and whats the tubes weight? About 80-100g i guess?. Edited July 30, 2016 by dangerousamateur
ddewees Posted July 30, 2016 Posted July 30, 2016 (edited) The tube weighs 92 grams... No nozzle. Edited July 30, 2016 by ddewees
dagabu Posted July 30, 2016 Posted July 30, 2016 Tough question to answer! According to my notes, my last #3, nozzleless, Universal Hybrid, all BP motor (2012) was 158g of fuel. That sounds right because I recall only getting three motors from a pound of BP. Using a standard BP tool set, I bet its closer to 200g. I see your number vary a lot. Dagabu, is that nozzleless too? Compared to WSMs statement of 109g its a huge difference ddewees:how much nozzle material is in there and whats the tubes weight? About 80-100g i guess?. Read the whole quote next time...
dangerousamateur Posted July 30, 2016 Author Posted July 30, 2016 Sometimes things are too obvious in front of you, so that you do not see them
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