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Not Semantics
PJ,
No. A differential and a planetary set (like the one is the CCT) are different. The differential, by definition, has 2 outputs (or inputs); for the car example it is the 2 side gears. The CCT, and planetary gears in general, only have one sun, one carrier, and one ring gear. The differential for a car (and Tytyus' implementation) has 2 suns, 1 carrier, and one ring gear. Unlike the differential, the planetary gearset with 2 motors has independent control of each motor's Torque/Speed profile (i.e. one will NOT override the other if they are both supplied with power.
-Paul
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