MSP 455 ride-on trowel from Allen Engineering has hydraulic power steering with independent manual pitch controls. It is powered by a 40-horsepower air-cooled Kohler gas engine and has a torque converter clutch system. Two 46-inch diameter, five-blade non-overlapping rotors move up to 165 mph. Flip-up seat and removable screens provide access to engine, torque converter and drive line.
