‘Kickstarting’ the K15 Bamboo and Recycled Aluminum E-Bike

Reader Contribution by J. William Moore and Ev World
Published on July 15, 2015
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In 2013, architect Bill McDonough and his collaborator, chemist Michael Braumgart, published the sequel to Cradle to Cradle. With the forward by President Bill Clinton, the thesis behind The Upcycle: Beyond Sustainability: Designing for Abundance is that the possibility exists to design materials and products so that — rather than ending in up in a landfill somewhere — discarded products can become the feedstock for new goods and services when their useful lives are complete.

In Upcycle, you “think of every component of your design as being borrowed. It will be returned one day to the biosphere or technosphere. It is your role to return it in as good a condition as you found it, as a good neighbor would.”

Finding an Electric Motor for Bicycles

That idea intrigued me and I carried it around in the back of my mind. Around the same time, I came across a small startup in Milan, Italy, that was developing an all-in-one electric motor for bicycles.

Unlike the more famous “Copenhagen” wheel, the ZeHus BIKE+ motor was amazingly compact, fitting the 250-watt electric motor and 160-watt-hour lithium battery, along with Bluetooth transceiver and a trio of sensors into a 3.2-kg package. I tracked down and chatted with one of the developers via Skype and started following their progress over the next year and a half.

Then last fall at Interbike, the annual bicycle trade show in Las Vegas, I had the opportunity to try out the motor on a pair of demonstrator bikes. The test track was set up on the parking lot behind the Mandalay Bay hotel casino. It was as level as a blackjack table, so gauging the motor?s hill-climbing ability wasn?t really possible, but I was surprised by its torque and re-generative braking capability. I chatted with their representatives, who included the company CEO, and promised myself I would get a motor to test.

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