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Gear Change Support

Gear Change Support

SHIMANO gear change support mechanism utilizes some portion of pedaling force at down shifting. The result is a quick and precise downshift with very light feeling. For the automatic shifting system, this gear change support mechanism is the key. Shifting effort is reduced to the point where the hub can be shifted through a small low-torque DC motor. Less electricity is required, so a smaller battery allows the system to be lighter and more compact.

*1: Shifting torque

*2: Driver rotation torque

*1: Sun gear
*2: Shifting Pawl
*3: Sleeve

*1: Sleeve

*1: Sleeve

*1: Sun gear
*2: Shifting Pawl
*3: Sleeve

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