The is a double reduction rigid drive axle, designed to take drive from an electric motor, with hydrostatic input as an option. Power is transmitted to the wheels via a set of double reduction gears and a four pinion differential.
Pattern for a 4 frequency class-II geodesic dome. Only 3 strut lengths required. Also, just 3 unique panels. The blue is an equilateral triangle and the orange and green are isosceles. By Robert Clark.