Rack and Gear Servo
Rack and gear sliding servo armature. Part of Project Bragi : https://www.facebook.com/ProjectBragi
Designed for large servos. Tested with a 12Kg (7.2V) servo running at only 5V. Force given was over 20Kg.
Video of internals working : https://www.youtube.com/watch?v=sq_sJGoPAgQ