Power Assisted Trikes

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Power assist resources: Bike-Power

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Bionx motor and battery on a Greenspeed GTX.

Courtesy of Greenspeed

Courtesy of Greenspeed

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Greenspeed GT3 with Power Box power assist trailer (and molded tailbox)

http://www.greenspeed.com.au Courtesy of Greenspeed

Greenspeed says that they did not like the single rear drive wheel and prefer a design with 2 wheels. With only one wheel the unit is difficult to maneuver when unattached, and it puts a lot of stress on the hitch when it is not completely vertical.