Hart-Parr 28-50: all source data
All 30 values recorded for this model, as the source lists them and in its units. The spec sheet shows the same data checked, typed and converted.
Overview
Production| Manufacturer | Hart-Parr |
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| (no label) | Standard-tread tractor |
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| (no label) | Built in Charles City, Iowa, USA |
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| (no label) | Original price was $2,085 in 1930 |
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Engine| (no label) | Hart-Parr 11.1L 4-cyl gasoline |
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Transmission| (no label) | 2-speed gear |
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Power| Drawbar (claimed) | 28 hp | 20.9 kW |
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| Belt (claimed) | 50 hp | 37.3 kW |
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| Drawbar (tested) | 46.03 hp | 34.3 kW |
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| Belt (tested) | 64.56 hp | 48.1 kW |
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Mechanical| (no label) | Two-wheel drive |
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| (no label) | Manual steering |
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| (no label) | Open operator station. |
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Dimensions| Weight | 8600 lbs | 3900 kg |
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| Front tire | 28x7 |
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| Rear tire | 51x14 |
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Engine
Engine detail| (no label) | Hart-Parr |
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| (no label) | gasoline |
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| (no label) | 4-cylinder |
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| (no label) | liquid-cooled |
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| Displacement | 675.1 ci | 11.1 L |
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| Bore/Stroke | 5.75x6.50 inches | 146 x 165 mm |
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| Air cleaner | dry |
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| Rated RPM | 850 |
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Transmission
Transmission| Type | gear |
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| Gears | 2 forward and 1 reverse |
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| Clutch | mechanical dry disc |
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Dimensions
Tires| Ag front | 28x7 steel |
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| Ag rear | 51x14 steel |
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Dimensions| Weight | 8600 lbs | 3900 kg |
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