ELECTRIC BIKE POWERTRAIN WITH DUAL PLANETARY GEAR SETS AND RING GEAR PEDAL REACTION TORQUE MEASUREMENT

摘要

A number of variations may include an electric cycle powertrain having a first planetary gear set and a second planetary gear set, wherein the second planetary gear set is constructed and arranged to selectively overdrive a pedal cadence and wherein the first planetary gear set is constructed and arranged to selectively provide additional gear ratio for a motor.