Ballard Power -world leader zero-emission PEM fuel cells Message Board

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Technology Stocks : Ballard Power -world leader zero-emission PEM fuel cells

BLDP 2.620

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3:59 PM EST

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To: Sid Turtlman who wrote (1378)	12/10/1997 7:49:00 PM
From: zigler	of 5827

Information on Rosen Vehicle Flywheel. The following is an excert from an article called "Rosen Cavalier" in the January 18, 1997 edition of the Econmomist magazine. "A reliable flywheel is fiendishly difficult to design and build. The Rosen version weights 20 lb and has a diameter of 19 inches. It is made from 4.5 miles of carbon fibre ribbon precisly wrapped and bonded about a titantium hub. When spun up to its cruising rate of 55,000 rpm, its edge is moving at about 1 km per second-around three times the speed of sound. And, because it is operated in a vaccum, with frictionless magnetic bearings, it can spin for six weeks without slowing down so much that it cannot do its job."

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