电动车选购知识（Purchasing knowledge of electric vehicles）.doc

电动车选购知识（Purchasing knowledge of electric vehicles） Optional tips for electric bicycles First, the electric bicycle is generally divided into two categories, one is zero start electric bicycle, commonly known as electric bicycle, this electric bicycle, although there are pedal riding function, but can rely solely on electric riding. There is also an intelligent electric bicycle, this intelligent electric bicycle can not fully electric riding, is the need for human riding help electric bicycle, generally for one to one power, that is, man-machine equivalent output. Electric bicycles are products with Chinese characteristics, and have independent intellectual property rights at the same time. They have attracted the attention of foreign dealers and have been imported from china. Two, buy points 1, good riding, riding light and labor-saving. 2, stable quality, safe and reliable. 3. Size suits your body. 4, styles, colors and prices. 5, fastening screws and nuts should be tightened, shall not loose and fall off. 6, the operation of a flexible rotating parts should not have stuck, stay stiff phenomenon. Such as: lift wheels, front and rear wheels should be flexible rotation, and should not appear larger swing and bounce up and down, lift wheels will stop, the wheel should be able to do before and after the light swing, should not suddenly stop rotating. Handlebar rotation should be flexible, pedal shaft and crank should be tightened, and must not be loose between each other, and flexible rotation. 7. Transmission: speed change gear within the gear range should be correct, the transmission position should be clear, no gap between the middle. 8, the chain should be suitable for flexibility, flexible operation. Rotate the crank chain wheel by hand, reverse and repeatedly. The chain is flexible and must not jump or fall off. 9, saddle parts: before and after the hands hold the saddle in the section above, the front hand pressed saddles, saddle front may not be staying. Turn t