Centurion Project - Part 1 Interchangable Motor Mounts

Before I start the next build, check out this past blog post about Marc Goldstein's interchangeable motor mounts: HERE

I'm using his locking, interchangeable motor mount design on my Semroc Centurion builds to follow.

This is going to be a three model build.
The first "Centurion" was finished earlier, the Estes Cosmic Explorer. It's a BT-55 design based on the older Centuri Centurion.
The second Semroc Centurion will be built stock with an 18mm motor mount.
The third Semroc Centurion will be stock except for the three different motor mounts:
1X - 18mm, 2X - 18mm and 1X - 24mm.

I'll be doing comparisons between the Semroc Centurion and Estes Cosmic Explorer throughout the build.