Originally Posted by OCDesigns

I think (IMHO) you should forget the Bionix system, buy a hub motor with an external controller, connect a 3000 watt controller to it, at least double the capacity of your current battery pack and then you won't worry about which gear you're in. The big advantage to hub motors is that they are (generally) ultra reliable with almost no maintenance. If you're going off road the torque and weight reduction benefits of the mid drive are obvious but it comes with a much higher maintenance and time/cost over the life of the system. For general on-road use it's hard to beat the simplicity of a hub motor. You can always buy a 500 watt sticker from Holmes Hobbies, no one will know the difference.