Ah, yes...I think you had to mix the vinegar in with the baking soda inside the hull. I didn't remember that part.

We had a lot of fun with cherry bombs back then. I found a thingee that was supposed to hold the leg of some scaffolding or something and used it as a rocket launcher by stuffing a cherry bomb inside, lighting it through a lower screw opening where the fuse could be seen, and sticking a practice golf ball or a crabapple in the top opening at the end of the tube. Very satisfying, specially with the crab apples, cos they would go a long way up. Made a hell of a bang too.

- LH