I'm usually test-driving electric cars, but lately I've been playing with a fun alternative: a clip-on electric motor that converts an ordinary bicycle ... a simple friction drive system, it's ...

Electric bikes have increased in popularity dramatically over the past few years, and while you can easily buy one from a reputable bicycle manufacturer, most of us around here might be inclined ...

he was able to convert a traditional bicycle to electric-drive for around $200. Electric skateboards paved the way for this hack, as it was an outrunner motor that he chose to use as a friction ...