As some of you may know, I acquired an Estes rocket kit from my local car boot. It's great fun and I'm trying to copy the motors for my own use and I have hit a wall.
The thrust comp is no problem as that is the comp I use in my own rockets, then there is a smoke delay to make it visible which is no problem, it's just a nitrate rich comp.
But then there is the ejection charge, it has to be substantial to pop the nose cone off 10 inches away with recovery wadding.
The charge is about 2mm thick, black as charcoal and pressed, with a thin layer of clay pressed on top.
I have made the tooling and cracked the tube rolling, I just need the ejection comp.