Thanks to -- I forget! Igniters hacked!

Discussion in 'Low Power Rocketry (LPR)' started by Bat-mite, Oct 18, 2019.

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  1. Nov 19, 2019 #91

    Ez2cDave

    Ez2cDave

    Ez2cDave

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  2. Dec 15, 2019 #92

    quickburst

    quickburst

    quickburst

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    Just imagine 2F Black Powder try to match that. I suppose there is an expected grain size chart somewhere. It will most likely your Home Brew will be slower than the commercial offerings. If you have smaller grains you powder should burn faster. That should narrow the gap down a bit.

    The best I ever produced was using the alcohol method, and you may know what I mean. I hesitate to describe that, fear of someone getting hurt.
     
  3. Dec 16, 2019 #93

    jbr

    jbr

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    I use the alcohol method and get real close to commercial
    lobbed many 4" shells, and a few 6" ones
    messed with BP rockets some, found they make better booms than whoosh which is good when you want that also
    my BP is all I use for ejection now, around $3 a pound
     
  4. Dec 16, 2019 #94

    heada

    heada

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    I get real close to commercial. I'm water based rather than alcohol. Also make my own airfloat from cedar. Initially it's a 1f size, wait until it starts to harden and then re-divide down to 4f and fully dry.

    This past summer I did 300x 1.75" in 6 racks, 100x 2" in 2 racks, 100x 3" in 5 racks, 20x 4" in 4 racks and 20x 6" individually. Ended up making over 50lbs of BP. Gonna scale it back some next year.
     
  5. Dec 16, 2019 #95

    Ez2cDave

    Ez2cDave

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    Yes, I know the method . . . No need to describe it.

    Dave F.
     

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