Massey-Harris GP 15/22: all source data
All 57 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 | Massey-Harris |
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| (no label) | Four-wheel Drive (4WD) tractor |
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| (no label) | Built in Racine, Wisconsin, USA |
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| Total built | 3,000 |
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| Original price | $1,000 |
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| (no label) | The Massey-Harris 15/22 GP General Purpose tractor was the first Massey-Harris designed tractor. |
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Engine| (no label) | Hercules 3.7L 4-cyl gasoline |
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| Fuel tank | 14 gal | 53.0 L |
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| Aux. fuel | 1.6 gal | 6.1 L |
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Transmission| (no label) | 3-speed gear |
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Power| Drawbar (claimed) | 15 hp | 11.2 kW |
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| Belt (claimed) | 22 hp | 16.4 kW |
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| Plows | 2 (14-inch) |
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| Drawbar (tested) | 19.91 hp | 14.8 kW |
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| Belt (tested) | 24.84 hp | 18.5 kW |
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Mechanical| Drive | 4x4 4WD |
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| (no label) | Open operator station. |
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Dimensions| Weight | 3,900 lbs | 1769 kg |
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| Front tire | 38x8 |
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| Rear tire | 38x8 |
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Belt pulley| Diameter | 12.125 inches | 30 cm |
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| Width | 6.5 inches | 16 cm |
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| RPM | 802 |
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| Speed | 2.546 ft/min | 0.78 meters/min |
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Engine
Engine detail| (no label) | Hercules OOC |
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| (no label) | gasoline |
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| (no label) | 4-cylinder |
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| (no label) | liquid-cooled vertical L-head |
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| Displacement | 226 ci | 3.7 L |
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| Bore/Stroke | 4.00x4.50 inches | 102 x 114 mm |
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| Air cleaner | oil bath |
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| Rated RPM | 1200 |
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| Coolant capacity (Coolant) | 16 qts | 15.1 L |
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| (no label) | Hercules OHC |
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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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| (no label) | The overhead-valve (OHV) Hercules engine replaced the flathead OOC in 1936, the final year of the GP production. |
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| Displacement | 226 ci | 3.7 L |
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| Bore/Stroke | 4.00x4.50 inches | 102 x 114 mm |
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| Rated RPM | 1200 |
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Transmission
Transmission| Type | gear |
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| Gears | 3 forward and 1 reverse |
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Dimensions
Tires| Ag front | 38x8 steel |
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| Ag rear | 38x8 steel |
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Dimensions| Length | 119 inches | 302 cm |
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| Height | 55 inches | 139 cm |
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| Weight | 3,900 lbs | 1769 kg |
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| Ground clearance | 30 inches | 76 cm |
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| Front tread | 40 to inches | 101 to 0 cm |
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| Front tread | 60 to inches | 152 to 0 cm |
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| Front tread | 66 to inches | 167 to 0 cm |
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| Front tread | 76 to inches | 193 to 0 cm |
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| Rear tread | 40 to inches | 101 to 0 cm |
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| Rear tread | 60 to inches | 152 to 0 cm |
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| Rear tread | 66 to inches | 167 to 0 cm |
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| Rear tread | 76 to inches | 193 to 0 cm |
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