Опубликовано в "Велосипед", язык - English. 17 страниц.
For now it appears there is a simple solution to cycling’s biggest flaw – use electricity to turn the pedals. Table of Contents Some brief history of the electric bike. The science behind the e-bike. The batteries. Hub motors. The frame. Wheels and brakes. Different types of... electric bicycles. Full power. Power assist. Legal status. Electric scootersЕще