David Brown 850: all source data
All 71 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 | David Brown |
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| (no label) | Utility tractor |
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| (no label) | Built in Meltham Mills, Huddersfield, England |
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Engine| (no label) | David Brown 2.5L 4-cyl diesel |
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| (no label) | David Brown 2.5L 4-cyl gasoline |
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| Fuel tank | 10.6 gal | 40.1 L |
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Transmission| (no label) | 6-speed unsynchronized gear |
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Power| Engine | 35 hp | 26.1 kW |
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| Drawbar (claimed) | 30 hp | 22.4 kW |
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| PTO (claimed) | 33 hp | 24.6 kW |
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| Drawbar (tested) | 30.93 hp | 23.1 kW |
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| PTO (tested) | 33.56 hp | 25.0 kW |
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Mechanical| (no label) | Two-wheel drive |
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| Final drives | spur gear |
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| (no label) | Manual steering |
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| (no label) | Differential mechanical expanding shoe brakes |
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| (no label) | Open operator station. |
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Pto| Rear PTO | transmission |
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| Rear PTO | live |
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| Clutch | dry disc |
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| Rear PTO Type | 540/1000 (1.375) |
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| Engine RPM | 540@1800 |
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| Engine RPM | 540@1100 |
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| Engine RPM | 1000@2000 |
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Dimensions| Wheelbase | 75.25 inches | 191 cm |
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| Weight | 3750 to 4179 pounds |
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| Front tire | 5.00-15 |
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| Rear tire | 10-28 |
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Engine
Engine options| (no label) | David Brown 2.5L 4-cyl diesel |
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| (no label) | David Brown 2.5L 4-cyl gasoline |
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Engine detail| (no label) | David Brown |
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| (no label) | diesel |
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| (no label) | 4-cylinder |
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| (no label) | liquid-cooled |
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| Displacement | 154 ci | 2.5 L |
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| Bore/Stroke | 3.50x4.00 inches | 89 x 102 mm |
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| Power | 35 hp | 26.1 kW |
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| Fuel system | direct injection |
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| Air cleaner | oil bath |
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| Compression | 17:1 |
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| Rated RPM | 2000 |
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| Idle RPM | 700-2000 |
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| Starter volts | 12 |
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| Oil capacity | 10.1 qts | 9.6 L |
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| Coolant capacity (Coolant) | 14.4 qts | 13.6 L |
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| (no label) | David Brown |
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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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| Displacement | 154 ci | 2.5 L |
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| Bore/Stroke | 3.50x4.00 inches | 89 x 102 mm |
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| Air cleaner | oil bath |
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| Compression | 6.25:1 |
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| Rated RPM | 2000 |
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| Starter volts | 12 |
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Transmission
Transmission| Type | unsynchronized gear |
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| Gears | 6 forward and 2 reverse |
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| Clutch | dry disc |
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| (no label) | Three gears (1-3) plus reverse (R) in two ranges (low and high). |
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Dimensions
Tires| Ag front | 5.00-15 |
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| Ag rear | 10-28 |
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Dimensions| Wheelbase | 75.25 inches | 191 cm |
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| Length | 113.5 inches | 288 cm |
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| Height (hood) | 51.75 inches | 131 cm |
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| Front tread | 52/56/60/64/68/72 inches | 132/142/152/162/172/182 cm |
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| Rear tread | 52/56/60/64/68/72 inches | 132/142/152/162/172/182 cm |
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Weight| Shipping | 3750 lbs | 1701 kg |
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| Gas Operating (Gas) | 4094 lbs | 1857 kg |
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| Diesel Operating (Diesel) | 4179 lbs | 1895 kg |
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| Ballasted | 5874 lbs | 2664 kg |
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