Power: 55 hp Date of manufacture : 1927 - 1930
Production Manufacturer: Hart-Parr Type: Standard-tread tractor Factory: Charles City, Iowa, USA Original price: $2,085 (1930 ) Hart-Parr 28-50 Power Drawbar (claimed): 28 hp 20.9 kW Belt (claimed): 50 hp 37.3 kW Drawbar (tested): 46.03 hp 34.3 kW Belt (tested): 64.56 hp 48.1 kW Hart-Parr 28-50 Engine Mechanical Chassis: 4x2 2WD Steering: manual Cab: Open operator station. Transmission: 2-speed gear Photos Hart-Parr 28-50 photos... Dimensions & Tires Weight: 8600 lbs 3900 kg Front tire: 28x7 Rear tire: 51x14 Full dimensions and tires ... 28-50 Serial Numbers 1927: 70501 1928: 70742 1929: 70968 1930: 71402 how to read serial numbers...

Hart-Parr 17-30	Power: 33 hp	Date of manufacture : 1901 - 1906

Hart-Parr 18-36	Power: 40 hp	Date of manufacture : 1926 - 1930

Hart-Parr 20-40	Power: 44 hp	Date of manufacture : 1912 - 1914

Hart-Parr 22-45	Power: 50 hp	Date of manufacture : 1903 - 1911

Hart-Parr 28-50	Power: 55 hp	Date of manufacture : 1927 - 1930

Hart-Parr 28-44	Power: 48 hp	Date of manufacture : 1930 - 1937

Hart-Parr 40-80	Power: 110 hp	Date of manufacture : 1908 - 1909

Hart-Parr 60-100	Power: 111 hp	Date of manufacture : 1911 - 1912

Hart-Parr Crop Maker 17-27	Power: 30 hp	Date of manufacture : 1916 - 1917