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| Copenhagen Wheel ： ウィキペディア英語版 |
Copenhagen Wheel
The Copenhagen Wheel is a bicycle wheel that stores and delivers electric energy to power a bicycle. Energy comes from an external battery charger, and from regenerative braking when the rider back-pedals as in a coaster brake. It is a pedelec, supplementing pedalling with an electric motor; it includes a built-in electric motor and a 48-volt lithium ion battery and is controlled by a smartphone app. The motor analyses the topography and pedaling activity to decide whether to deliver power. Range is stated as up to .〔(superpedestrian Web page, with "Specifications" section and pre-order option. )〕〔 the wheel could be pre-ordered for future delivery at a price of US$949.〔(Carlton Reid: Copenhagen Wheel is (nearly) ready to roll (again), pub. BikeBiz, 28 August 2015 )〕
The wheel is made by Superpedestrian of Cambridge, Massachusetts, US, based on technology from MIT. The device got a free advertising boost when it was shown on Showtime's seventh season of ''Weeds''.〔Walker, Alissa. (How "Weeds" Became A Marketing High For MIT's Hybrid Bike Wheel ), ''Fast Company'', 15 September 2011. Accessed 10 June 2014〕
== References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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