Abstract: A rotary internal combustion engine having a plurality of pairs of angled pistons, each pair having a power piston and a corresponding supply piston. As the power piston of a pair fires to provide rotation for the engine, the corresponding supply piston draws a fresh fuel air charge from the center section of the engine. As the supply piston compresses the fuel air mixture, the mixture is delivered at the top of the power cylinder for the next firing. The exhaust port is located at the bottom of the power piston stroke and the fuel intake is at the top of the cylinder, to increase the efficiency of the engine. Roller bearings are mounted between each cylinder block and an engine outer casing to support the engine.