#21
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If it's the motor I'm thinking of, it burned about 5 seconds and was only a 7ns motor! Think of our Estes C motors which are around 8.8ns with the thrust drawn out to 5 seconds. That even seems iffy in a glider!
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I love sanding. |
#22
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I'm not sure that is enough power to keep anything over a Guillow's Sleek Streek airborne.
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When in doubt, WHACK the GAS and DITCH the brake !!! Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't ! Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY. ALL systems are GO for MAYHEM, CHAOS, and HAVOC ! |
#23
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That's what I thought when I read it. https://www.pyroweb.de/raketenmotor...000-10er-schtl/
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I love sanding. |
#24
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These Held sound like the old Czech rapiers. They were long/low thrust.
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"Old Rocketeer's don't die; they just go OOP".....unless you 3D print them. |
#25
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Those would have been less useful than a FSI F7 smoke bomb.
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When in doubt, WHACK the GAS and DITCH the brake !!! Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't ! Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY. ALL systems are GO for MAYHEM, CHAOS, and HAVOC ! |
#26
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The Rapiers are pretty cool - I have a few of the 18 second burn motors. They’re used in hand tossed gliders: https://youtu.be/s-gk5WMylao
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SAM #0031 |
#27
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I could do that all day with small hand launched BG. KLIMA said they may consider making these at some future date. It's too bad somebody here in the US would make these. They aren't considered fireworks or model rocket motors here according to the CPSC. (10) Solid fuel pellets intended for use in miniature jet engines for propelling model jet airplanes, speed boats, racing cars, and similar models, provided such solid fuel pellets: (i) Weigh not more than 11.5 grams each. (ii) Are coated with a protective resinous film. (iii) Contain not more than 35 percent potassium dichromate. (iv) Produce a maximum thrust of not more than 7 1/2 ounces when used as directed. (v) Burn not longer than 12 seconds each when used as directed. I think 7.5 oz is about 2.0 N. The biggest Rapiers had about 1 5 ad much thrust.
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"Old Rocketeer's don't die; they just go OOP".....unless you 3D print them. |
#28
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I'm not sure these build up enough pressure to cato.
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SAM #0031 |
#29
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Those are similar to mine, though mine have a gray nozzle, not red. Mine are 2.5ns as well. Jim Kukowski got them as part of an Alfa kit, at the first world championships in Dubnica in 66. I bought the kit at a Cannon auction. Gave the kit to Carl at NARAM-50 (but not before Lee Piester stopped me in the hotel lobby when he saw the kit in my hand), but kept the motors. Carl was going to make a retro-repro kit to support the US FAI team. Never got the kit back from him. These should be regular black powder motors. From what I've been told, the "Widow makers" are a different size and materials.
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Roy nar12605 |
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