Today I finally was able to install the key assembly in the power train for the new tandem. This assembly is a jack shaft that allows the blending of power from the rider and the auxiliary electric motor. That is the rider can power the wheel with no auxiliary power. The auxiliary motor can power the wheel and the rider can coast. Finally both can power the wheel at the same time.
At the same time the shaft itself functions as the pivot for the rear wheel suspension. This is good because the chains don’t vary in length as the suspension flexes. Continue reading Tandem Milestone: →