Wind turbines are going big, real big – latest one is the size of a 747 airplane

Right now wind is leading the renewable energy surge and records for the largest turbines are being set. Just how big is the largest one? Siemens is creating a single blade that is 225 feet long, basically as wide as a 747 airplane. The manufacturing process is incredible, from Wired UK: Siemens manufactures the mammoth …

Electric-car brakes last 3x longer than conventional – threatening auto mechanics

Not only do electric cars threaten all those gas stations on every corner, but also the auto-mechanics and car parts stores: Mechanic worries that electric-car brakes will ruin his┬ábusiness Joe Ferrer says that brakes are easily 35 to 40 percent of his total business. Replacing rotors, calipers, and pads keeps his shop humming. But on …

Energy 101: Wind turbines, how those slow moving blades create electricity

“The same wind that used to pump water for cattle is now turning giant wind turbines to power cities and homes.” “The blades only turn about 18 RPM, not nearly fast enough to create electricity, so the rotor shaft spins a series of gears that increase the rotation up to 1800 RPM. At that speed …