@3series takumi
receiver: jeti rex 5
esc: gm purple sx3r
servo: hitec micro servo hs81MG (in the pics you see the my first attempt with a sub-micro servo - not recommended, will break)
The motor mount consists of two aluminium bars. Screwed to the chassis at the position where the on/off switch normaly should be. I have drilled two holes in the motor case and cutted "Gewinde" (i don't no the correct english word - "holes" for screws), as they are in bigger (180, 300, 540, etc.) motors.
The shape of the aluminium parts are modified for a perfect fit to the chassis and the motor.
diets - it look like some more polishing is necessary