The HP205 ride-on power trowel has twin Kohler ECH980 EFI gasoline engines that provide 37 horsepower, and torque-converter clutches produce low-speed torque for float panning and high rotor speed for burnishing. Two non-overlapping, 6-blade rotors measure 57.6 inches in diameter and allow rotor speeds from 45 to 180 rpm. Panning path is 117.6 inches wide. Operating weight is 2,169 pounds.