The CRT-PS power steer system was designed to produce the results of a hydrostatic machine matched with ... The 48-inch ride-on trowel is powered by a 35-hp Vanguard air-cooled gasoline engine ...

Allen Engineering's HDX600 Hydra-Drive Extreme Riding Trowel is a hydraulically-controlled, 8-ft. class ride-on power trowel that is powered by a 50-hp Hatz liquid-cooled diesel engine.