What you’re looking at is a fully mechanical LEGO clock built using real principles of horology, gear trains, escapement mechanisms, pendulum timing, gravity power, and precision timekeeping. There are no electronics. No batteries. No hidden motors. This clock runs using a weighted gravity drive system that transfers energy through a complex Technic gear train into a homemade escapement, the same fundamental mechanism used in mechanical clocks and watches for centuries. The escapement controls t

The Mechanical Clock Pendulum Assembly

Does That Swinging Pendulum Serve Any Purpose In A Clock?