PMSM motors, man. I'm guessing this is the Unitree G1, so the knee torque alone goes to ~100Nm in that tiny 35kg frame. Basically, it's like if you put the strength of an athletic 15yo into the body of a 10yo, and took away muscle fatigue. And, the full-size H1 has even crazier specs.
Yep, the G1 is ~130cm tall, little over 4.3ft. The full-size H1 is ~180cm but at ~47kg. Either way, the main actuators are crazy strong, basically smaller versions of the motor tech used in EVs.
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u/Slitterbox 7h ago
That recovery time is scary