Gray Tractor 18-36: 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 | Gray Tractor |
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| (no label) | Standard-tread tractor |
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| (no label) | Built in Minneapolis, Minnesota, USA |
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Engine| (no label) | Waukesha 7.8L 4-cyl gasoline |
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Transmission| (no label) | 2-speed gear |
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Power| Drawbar (claimed) | 18 hp | 13.4 kW |
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| Belt (claimed) | 36 hp | 26.8 kW |
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| Plows | 4 |
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| Drawbar (tested) | 19.64 hp | 14.6 kW |
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| Belt (tested) | 32.20 hp | 24.0 kW |
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Mechanical| Drive | 3x1 drum drive |
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| (no label) | Manual steering |
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| (no label) | Open operator station. |
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Dimensions| Wheelbase | 104.5 inches | 265 cm |
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| Weight | 6200 lbs | 2812 kg |
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| Front tire | 40x8 |
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| Rear tire | 54x54 |
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Serial location| (no label) | Serial number plate on the left side of the tractor, on top of the transmission case. |
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Belt pulley| Diameter | 11 inches | 27 cm |
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| Width | 8 inches | 20 cm |
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Engine
Engine detail| (no label) | Waukesha P |
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| (no label) | gasoline |
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| (no label) | 4-cylinder |
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| (no label) | liquid-cooled inline |
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| Displacement | 478 ci | 7.8 L |
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| Bore/Stroke | 4.75x6.75 inches | 121 x 171 mm |
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| Fuel system | carburetor |
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| Rated RPM | 900 |
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| Starter type | hand-crank |
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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 | 40x8 steel |
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| Ag rear | 54x54 steel |
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Dimensions| Wheelbase | 104.5 inches | 265 cm |
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| Length | 174 inches | 441 cm |
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| Width | 72.25 inches | 183 cm |
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| Height | 72 inches | 182 cm |
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| Weight | 6200 lbs | 2812 kg |
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