New to the Allen Engineering range of Mechanical Super Pro riding trowels is the MSP 445. The new trowel uses a 40-horsepower Kohler gas engine (air-cooled) and a refined torque-converter clutch system to drive two 46-inch-diameter, five-blade rotors to a maximum speed of 165 rpm. Designed for an optimum weight-to-horsepower ratio, the new MSP 445 features manual steering and pitch controls, an electrically powered spray system for retardant application and a flip-up seat and removable screens for easy access to the power train.