Thought I would share a couple photos of my latest project. This is being built hopefully for mach speeds and altitude. Fins are tapered and coated in 24-hour epoxy. They are epoxied to the motor tube and then the fin can is filled with epoxy foam.
I am using a Perfect Flite Stratologger as my altimeter as well as their idea to break the glass off Christmas lights and use them as electric matches. There is room for a siren in the AV Bay, but not much else.
The 6" AV bay has a 1" body tube segment that is glued in such a way that the forward end of the bay extends 3" away from the body tube, and the aft end is 2" away. I also extended of the motor tube to 5/8" past the bottom of the body tube. Finally, the eyebolts only have nuts on the inside sections of the AV bay. All these adjustments give me room to use a 38MM Cesaroni 6XL casing.