This is a custom designed motor mount cap for the motor mount on the old NCR eliminator model rocket from North Coast Rocketry. As you know, the eliminator was made to use only custom “Darkstar” engines. This unlocks other 29mm engines for this rocket. I have tested it with an Aerotech F27-4 Redline engine. It has NOT been tested with cessaroni engines.

Print only in PETG as PLA is too brittle. I recommend 20% Infill with no supports being necessary.

Disclaimer: This is an experimental 3D-printed rocket component. I am not responsible for the success of your flight, the integrity of the print, or any damage/injury caused by the use of this model. You are responsible for following the NAR rocketry code and performing your own safety checks prior to launch.