No other transmissions I could find on YT were small enough, yet could also be used in a tank with all its power and stress. This has a 3 stud height plus the gears, shifter, and potential servo motor. I made it to be very rigid with little opportunity for gear teeth to slip. This is not a tutorial, I just thought I might share my design before it is too hidden and stuffed into the rest of my Lego tank that I am rebuilding. I am using colorful pieces so I can reserve the gray and black ones for the outside. The modifed tank (subtractor) steering by SaperPL I attached to the side of this: • Compact flat subtractor / Double Different...