Apparently, and who knew, Yamaha has been building electric bicycles for 25 years, and invented the term PAS: Pedal Assist System. The YPJ-01 in the lead photo has been around for a few years, but not readily available outside of Japan. At heart, it’s a very nice 22-speed road bike, but with a motor that adds a little or a lot of power depend...
Si te gusto esta noticia puede que te interesen estas..