Power Assisted Trikes
De VPH
Power assist resources: Bike-Power
Bionx motor and battery on a Greenspeed GTX.
Greenspeed GT3 with Power Box power assist trailer (and molded tailbox)
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.
