Watch video news and get some information about prototype PAS er.Tokyo Motor Show 2009, Yamaha displayed the prototype PAS er, based on the PAS bicycle first released in 1993. The PAS er has been developed based on the concept of a more advanced hybrid relationship between the rider and the motor. It features a two-wheel-drive mechanism which applies the electric motor “assist” to both the front and rear wheels and an automatic electronic gear shift. The motor of the front wheel is also designed with a regenerative function that charges the battery during deceleration or downhill riding. http://mobile123-mobile.blogspot.com/
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