The Nuvinci gear-hubs for bicycles are worse than useless, they can't handle more than 26 gear-inches of torque with human legs meaning that any motor will make them slip. :shout: The maximum torque before it starts slipping is 130Nm or 96 LbFT . One wheel revolution to one crank revolution is the lowest gear possible. Some one told me they saw a video of some guy jumping on the pedals, and thought that it showed how strong the thing is. All it really shows is that it takes much more leverage to move in higher gear. And it shows how strong the chain is; I have torn chain links just climbing hills in low gear. However there is an application that my be useful; let the motor do the job of bringing the bike up to a speed that you can pedal in high gear. the motor will have to be connected to the other side of the wheel. Has any one experienced this device differently?