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Cadence sensor
Motor
Inside the motor box is a brushed DC
motor, capable of producing 750 watts of
power and very high torque, thanks in part
to its rare-earth Neodymium magnets. The
motor is bolted to a movable plate that
facilitates belt tension adjustments.
The Evo-Drive™ cadence sensor measures the rider’s pedaling speed, translating it into an
electrical signal that is read by the motor controller. Inside the sensor, a large sprocket is driven by
the rotation of the bicycle’s crank. This sprocket is connected with a belt to the spindle of a small
electric motor, which acts as a generator, outputting voltage that directly corresponds to the rider’s
pedaling cadence.
Evo-Drive™ hub
The Currie exclusive Evo-Drive™ rear hub
uses a proprietary & patented planetary
differential to combine human effort
with electric assistance. The hub uses a
standard freehub body, compatible with
Shimano or SRAM 9-speed cassettes.
Cadence sensor, cover removed
mechanical det
ail
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