Gray Tractor 18-30: all source data
All 33 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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| (no label) | Original price was $1,750 in 1915 |
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Engine| (no label) | Waukesha 7.0L 4-cyl gasoline |
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| Fuel tank | 34 gal | 128.7 L |
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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) | 30 hp | 22.4 kW |
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| Plows | 4 |
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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| Weight | 5950 lbs | 2698 kg |
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| Front tire | 40x8 |
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| Rear tire | 54x54 |
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Belt pulley| Diameter | 11 inches | 27 cm |
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| Width | 7 inches | 17 cm |
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Engine
Engine detail| (no label) | Waukesha |
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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 | 429 ci | 7.0 L |
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| Bore/Stroke | 4.50x6.75 inches | 114 x 171 mm |
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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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Dimensions
Tires| Ag front | 40x8 steel |
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| Ag rear | 54x54 steel |
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Dimensions| Length | 174 inches | 441 cm |
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| Width | 78 inches | 198 cm |
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| Height | 63 inches | 160 cm |
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| Weight | 5950 lbs | 2698 kg |
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