Gray Tractor 15-25 B: all source data
All 32 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 $1,650 in 1916 |
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Engine| (no label) | Waukesha 6.1L 4-cyl gasoline |
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| Fuel tank | 30 gal | 113.6 L |
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Transmission| (no label) | 2-speed gear |
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Power| Drawbar (claimed) | 15 hp | 11.2 kW |
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| Belt (claimed) | 25 hp | 18.6 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| Weight | 5500 lbs | 2494 kg |
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| Front tire | 39x8 |
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| Rear tire | 55x48 |
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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 | 373 ci | 6.1 L |
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| Bore/Stroke | 4.25x6.75 inches | 108 x 171 mm |
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| Rated RPM | 800 |
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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 | 39x8 steel |
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| Ag rear | 55x48 steel |
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Dimensions| Length | 174 inches | 441 cm |
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| Width | 76 inches | 193 cm |
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| Height | 60 inches | 152 cm |
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| Weight | 5500 lbs | 2494 kg |
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