A brand new mechanism: GBC 37 Ratchet Ride - 42097 C model truly has something magical and uses a never seen before Ratchet Pump mechanism to push the... | By PV-Productions -
LEGO MOC Crawler Crane (42097) with motorized legs by olivierz | Rebrickable - Build with LEGO
GBC 37 Ratchet Ride - Building Instructions - 42097 C Model Compact Crawler Crane - YouTube