Originally Posted by gdjsky01

I have no idea. I'll try an 18mm B3-3 in a 'who cares' rocket. I have a bunch of them
Others tell me the B3-3 is gonna go BOOM. Hence the don't care rocket.
I remember 13mm Centuri motors. But I never knew about AVI.

I don't think I see date code before the early 70's so I doubt they are 'collectable'

I think I am indeed confused about the high initial thrust motors.
I 'get' the B14 (I am a child of the 60s/70s). The three stage farside-x and what?