The sun shines. Temperatures creep into the 80s. A Harley roars down your street. You've got to go riding. So what's stopping you? Run to your garage, hop on your Lectra(TM), and take off. The Lectra, manufactured and marketed by EMB, Inc. (Sebastopol, CA), is the world's first commercially produced electric motorbike, according to company founder, Scott Cronk. EMB commercialized an advanced variable-reluctance (VR) electric drive system for vehicle drive applications. The newly patented VR motor is a compact brushless motor system, complete with custom computer controls. The VR has an electronically assisted braking mode. This extends the driving range and preserves brake life by converting the vehicle's kinetic energy into stored electrical energy during braking. The prototype and final design were created using CADKEY software by Baystate Technologies (Marlborough, MA). A cross between a motor scooter and a motorcycle, the Lectra weighs 340 pounds, runs up to 30 miles on a single charge, and features a single-speed transmission, lead-acid batteries, a top speed of 45 mph, and a price tag of $3,995. For the environmentally conscious, it has zero emissions, virtually no maintenance, and a low cost of operation, says EMB. Visit: www.motorbike.org.
For decades, engineers have worked to combat erosion by developing high-strength alloys, composites, and surface coatings. However, in a new paper, a team at Jilin University in China turned to one of the most deadly animals in the world for inspiration -- the yellow fat-backed scorpion.
Green energy is being billed as a way to make communities that are energy deprived more self-sustaining. So it makes sense to use natural materials to create devices that harvest this type of energy. That’s the idea behind a hybrid wind/solar energy harvester made of bamboo that’s been developed by UVM researchers.
Anyone who’s ever moved files from a hard drive to a computer has sat patiently waiting for the transfer to complete. But what if this process could be done wirelessly, without having to connect devices with cables, and in seconds?
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.