Hart-Parr 20: all source data
All 38 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 $1,195 in 1924 |
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Engine| (no label) | Hart-Parr 4.6L 2-cyl gasoline |
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| (no label) | Hart-Parr 5.1L 2-cyl |
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Transmission| (no label) | 2-speed gear |
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Power| Drawbar (claimed) | 10 hp | 7.5 kW |
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| Belt (claimed) | 20 hp | 14.9 kW |
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| Drawbar (tested) | 14.08 hp | 10.5 kW |
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| Belt (tested) | 23.01 hp | 17.2 kW |
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Mechanical| (no label) | Two-wheel drive |
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| Final drives | bull gear |
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| (no label) | Manual steering |
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| (no label) | Open operator station. |
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Dimensions| Weight | 4440 lbs | 2013 kg |
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| Front tire | 28x5 |
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| Rear tire | 46x10 |
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Engine
Engine options| (no label) | Hart-Parr 4.6L 2-cyl gasoline |
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| (no label) | Hart-Parr 5.1L 2-cyl |
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Engine detail| (no label) | Hart-Parr |
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| (no label) | gasoline |
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| (no label) | 2-cylinder |
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| (no label) | liquid-cooled |
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| Displacement | 281.4 ci | 4.6 L |
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| Bore/Stroke | 5.25x6.50 inches | 133 x 165 mm |
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| Rated RPM | 800 |
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| (no label) | Hart-Parr |
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| (no label) | 2-cylinder |
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| (no label) | liquid-cooled |
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| (no label) | The larger engine was used in the model 20C beginning at tractor serial number 35501. |
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| Displacement | 309 ci | 5.1 L |
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| Bore/Stroke | 5.50x6.50 inches | 140 x 165 mm |
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Transmission
Transmission| Type | gear |
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| Gears | 2 forward and 1 reverse |
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Dimensions
Tires| Ag front | 28x5 steel |
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| Ag rear | 46x10 steel |
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Dimensions| Weight | 4440 lbs | 2013 kg |
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