Jimjimboom Posted April 7, 2020 Posted April 7, 2020 Hi guys i have been playing around with home made tooling and today managed to get a rocket in the air nicely but i have ordered some proper tooling from a reputable dealer! I was wondering is 1lb rocket tooling talking about the weight of the rocket or the thrust produced by the rocket? As 500g rocket seems a bit heavy!
Mumbles Posted April 7, 2020 Posted April 7, 2020 Neither. It's an older, somewhat archaic measurement system. It's based on the mass of a metal ball. I've never gotten a totally clear answer on the actual origin. I've heard the mass of lead balls that fill a normally sized tube (usually 10). I've also heard the mass of a lead ball that matches the OD of the tube, but that generally uses an older standard of tube that was about 1.5x the ID. It's stuck around and is just something you have to learn. It has nothing to do with actual rocket mass or lifting capacity.
robbo Posted April 7, 2020 Posted April 7, 2020 And I've read that it refers to iron balls, but that doesn't work out either...
Mumbles Posted April 8, 2020 Posted April 8, 2020 I agree. When you test those origins with actual masses of the balls they're supposed to be based on, things break down. It's a part of the reason I've never been satisfied with the explanations I've heard from seasoned fireworkers or in some of the older books. I always get dismissed when questioning it. Just something we have to deal with I suppose.
Jimjimboom Posted April 14, 2020 Author Posted April 14, 2020 I looked into it and it is something about a certain quantity of balls or some crap! Apparently the first pyros were mostly munisions experts so it made sence at the time! I guess
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