Driving Ferrari's twin-turbo exotic is the closest you'll ever come to experiencing a nervous breakdown. Designed to commemorate Ferrari's 40th anniversary, the F40 is highly revered among gearheads. And gears
Variable Speed Geneva Disk, a LEGO GBC (Great Ball Contraption) by Takanori HashimotoTakanori Hashimoto GBC modules are always relying on remarkeable mechanisms. And his last creation, "Variable Speed Geneva Drive"