I remember being blown away at how strong my first hobby servos were when I built my Hexapod 2 from Lynxmotion about 12 years ago. In comparison, they were literally just a fraction of the strength of modern digital servos, and the gap widens even further when put up against a robotic actuator such as the RX-64 Smart Actuator.
I was working on my mech Hagetaka the other night and made the mistake of grabbing at the robot to stabilize it while it was moving, and managed to graze my finger in one of the joints. It drew blood and immediately reminded me that working with these types of servos was an entirely different ballgame than your standard hobby servo. With that in mind, we put together a little demonstration video of just how powerful these servos can be! Enjoy!