Why make your own Estes black powder rocket engines? "This here's a story about a man named Ned, His grandson Jake called, and this is what he said, Pap, I've got an Estes rocket and a question for you, Can you make a motor for it, with a homemade fuel?" Swimmin' pools, movie stars... Oops, I'd better get back on topic here. I have to admit something right off the bat. I led a deprived childhood. I never had an Estes model rocket to play with. This might explain many things about my personality. But, I...