He expected torque to be severely limited, so he also machined a large sprocket for the rear wheel. In an attempt to get around the voltage limitation, built his own axial flux motor for the bike, using 3D printed formers for the coils and an aluminum rotor with embedded magnets.
One of the problems with supercaps is the rapid voltage drop during discharge compared to batteries, which can limit the amount of usable energy. wanted to see if supercaps have any practical use on e-bikes, and built a DIY electric motor in the process. However, for rapid and repeated charge and discharge cycles, supercaps are hard to beat. Supercapacitor technology often looks like a revolutionary energy storage technology on the surface, but the actual performance numbers can be rather uninspiring.
