BP Rocket Fuel / tool/ test and flight.

March 27, 2016

So now I have a set recipe that works good in all the size rockets I make from 1/4" to 1#.

This has eliminated catos due to fuel. Use good tubes.

43.75 grams 60/30/10 standard pine rocket fuel. milled.

43.75 grams 75/15/10 eastern red cedar.(general purpose) milled

12.50 grams 80 mesh pine charcoal

Mix well and rice with 91% isopropyl alcohol through a fine mesh screen.

Finer the better. Hand ram or press as you wish. If you want to also add a metal fuel for bright tail,

reduce the 80 mesh pine to 8 grams and replace it with 4.5 grams of the metal.

Using magnal 200 mesh granular, alcoa aluminum or small flake firefly have been used succesfully

5/16 i.d. motor specs

30# recycled kraft

2" long

.070 (1/16") wall thickness

(I add 1 layer of 2" fiberglass reinforced strapping tape before ramming/pressing for good measure.)

tool spindle spec

1 1/8" total length

1/8 " recessed convergent knozzle former

.125" x 1/4" long parallel for knozzle

,75" final spindle length tapered from .125" to .10"

A static test without delay and a nightime flight with firefly delay and a 1/2" leftover star.

These will lift an 8 gram header over the trees. The next round of testing will determine

the absolute maximum they will lift to a good height.

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