Jack Hydrazine
02-02-2020, 05:50 PM
I have designed a simulated nozzle for Estes BT-55 tubing as a 3D object with enough clearance in the nozzle to allow you to use 24mm motor mount tubing. There are two versions - one with and one without an engine hook channel. You can download for free from Thingiverse and print it.
https://www.thingiverse.com/thing:4141174
https://www.thingiverse.com/thing:4141174