The ejection charge is not roasting the stuffer tube - the delay afterburn is
bad on all motors but worst on special composite motors. Also the most
are those with thin walls like standard Estes BT-5, 20 and 50. BT-55 thickness
is a bit
more. MRC tubes were the thinnest ever.
Google Hibachi Effect.
-Fred Shecter NAR 20117
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