Lego Raptor - Running Biped Robot

Lego walkers with 2 Legs are a challenge but this one runs. Today I am looking at a video about a biped robot with an interesting leg geometry that we can use in Lego walking robots.

The robot referenced is here: https://www.youtube.com/watch?v=fhFMgebOEv0&list=WL&index=5&t=0s

#legolegsgo ... https://www.youtube.com/watch?v=Y-TmDSCBgX8