[BProckets] Double stage in a single motor

[flint hapirat]

Hi Dan,

> I've had similar thoughts in the past but I don't
> have time to pursue much
> hobby stuff as of late.  

Simple:
Ram your nozzle and first cored grain.
Ram the "delay" grain/section.
Pour 1 standard volume of BP to be rammed, and place
the core rod in the "center". Fit the ramming rod and
ram as usual. The first BP increment will now hold the
core rod in the center for the rest of the ramming.
Before ramming the plug, GENTLY take out the core rod
and place a piece of paper on top of the BP grain (so
it won't get filled with the clay). Ram the clay.
Done.

I highly recommend a strong metal/plastic/paper (best)
tube to hold the motor tube in a straight position
(mine got a little bent because I don't have such a
tube, but this doesn't bother them too much - I have
previous experience with regular but long BP motors,
both end and core burners). 

Cheers,
Flint

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