[Tom Stanton] wanted to see if supercaps have any practical use on e-bikes, and built a DIY electric motor in the process. One of the problems with supercaps is the rapid voltage drop during ...

Rubbee consists of a polyurethane roller wired to a 14.4-volt battery pack. The doohickey presses the roller against the back tire of the bike, propelling it with the force of wheel-on-wheel friction ...

Well, these days, Razor is into so much more than just kick scooter; they design and build downright electric ... is the next stage in Razor's electric dirt-bike history, building upon the image ...