ShareRoller turns bike-share units into e-bikes.

Developed by Jeff Guida, an electrical engineer from New York, ShareRoller is a portable and detachable electric motor kit designed for bike-share programs.

The portable electric motor is shaped like a briefcase and is attached to the mounting bracket above the front wheel of the bike. It comes with a thumb throttle that clips to the handlebars and allows the rider to control the motor. The portable motor also has built-in LED headlights for added safety on the road.

The motor provides 750 watts of power, allowing the user to ride along at a speed of up to 18 mph without pedaling. The rider can also choose to pedal along as much he or she wants.

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