Gm Global Technolgoy Operations, Inc.

Andje U Lewkowicz-Lalonde

Martin Juhas

A system is provided for shifting gears in a cycle. The shifter system includes a motor that delivers a torque to propel the cycle. A variable ratio transmission is coupled with the motor. A cable transmits movement to shift the variable ratio transmission. A cable pulley is connected with the cable and is rotated to move the cable. A lever is coupled with the cable pulley and imparts rotation to the cable pulley. A sensor is positioned to detect an initial input on the lever that does not rotate the cable pulley. A controller interrupts the torque from the motor in response to the initial input and prior to a shift in response to the transmission of movement by the cable.

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Oshawa, Canada

Andje U Lewkowicz-Lalonde