[Tom Stanton] wanted to see if supercaps have any practical use on e-bikes, and built a DIY electric motor in the ... his own axial flux motor for the bike, using 3D printed formers for the ...

The trickiest part of this build looks like it was cutting off the bike ... watt-hour battery pack that lives in a MDF box mounted under the seat. To test out his handiwork, [DIY King] took ...