pro 54

Greetings, I have a Cesaroni J140P that I'm going to use for an L2 launch. I have a couple of questions about this motor that anyone with experience will have an easy time answering: 1) There is a gap inside the motor grain housing; the motor grain does not seat flush against the nozzle and...

I recall seeing some posts about epoxying the forward closure on these motors, but can't seem to find them. I may try flying my first Pro 54 tomorrow and did notice there doesn't appear to be a great seal between the closure and the liner. I recall that people mentioned placing a bead of 5...