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| info | |
| 1928 - 1929, Standard-tread tractor | |
| Previous model: | Minneapolis 35-70 |
| Production | |
| Manufacturer: | Minneapolis (a part of Minneapolis Threshing Machine Company) |
| Factory: | Hopkins, Minnesota, USA |
| Dimensions & Tires | |
| Weight: | 9695 lbs [4397 kg] |
| Rear tire: | 58x19.5 |
| Minneapolis 39-57 Power | |
| Drawbar (claimed): | 39 hp [29.1 kW] |
| Belt (claimed): | 57 hp [42.5 kW] |
| Drawbar (tested): | 47.77 hp [35.6 kW] |
| Belt (tested): | 64.55 hp [48.1 kW] |
| Mechanical | |
| Chassis: | 4x2 2WD |
| Steering: | manual |
| Cab: | Open operator station. |
| Belt Pulley | |
| Diameter: | 20 inches [50 cm] |
| Width: | 8.5 inches [21 cm] |
| RPM: | 620 |
| info | |
| Bore/Stroke: | 5.50x6.50 inches [140 x 165 mm] |
| Rated RPM: | 1000 |
| Starter type: | hand crank |
| Engine Detail | |
| Stearns, gasoline, 4-cylinder, liquid-cooled, 617.7 ci [10.1 L] |
| info | |
| Previous model: | Minneapolis 35-70 |
| Transmission | |
| Type: | gear |
| Gears: | 2 forward and 1 reverse |
| info | |
| Previous model: | Minneapolis 35-70 |
| Dimensions | |
| Weight: | 9695 lbs [4397 kg] |
| Minneapolis 39-57 Tires | |
| Ag rear: | 58x19.5 (steel) |