The David Brown 850 is a 2WD utility tractor manufactured by David Brown in Meltham Mills, Huddersfield, England from 1960 to 1965.
The David Brown 850 is equipped with one of two engines: a 2.5 L (154.0 cu·in) four-cylinder diesel engine or a 2.5 L (154.0 cu·in) four-cylinder gasoline engine and unsynchronized gear transmission with 6 forward and 2 reverse gears abd dry disc clutch.
The tractor could be equipped with the following engines:
- David Brown. It is a 2.5 L, 2,524 cm2, (154.0 cu·in) four-cylinder natural aspirated diesel engine with 89.0 mm (3.5 in) of the cylinder bore and 102.0 mm (4.02 in) of the piston stroke. The compression ratio rating is 17.0:1. This engine produced 35.5 PS (26.1 kW; 35 HP) at 2,000 rpm of output power.
- David Brown. It is a 2.5 L, 2,524 cm2, (154.0 cu·in) four-cylinder natural aspirated gasoline engine. The cylinder bore is 89.0 mm (3.5 in) and the piston stroke is 102.0 mm (4.02 in). The compression ratio rating is 6.25:1. This engine produced 35.5 PS (26.1 kW; 35 HP) at 2,000 rpm of output power.
The David Brown 850 is equipped with manual steering, differential mechanical expanding shoe brakes, open operator station, and 40.0 liters (10.6 US gal.; 8.8 Imp. gal) fuel tank.
David Brown 850 Specifications
| General Specifications | |
| Model | David Brown 850 |
| Length | 2,880 mm (113.4 in) |
| Width | – |
| Height (hood) | 1,310 mm (51.6 in) |
| Wheel base | 1,910 mm (75.2 in) |
| Weight (operating) | Gas: 1,860 kg (4,101 lbs) Diesel: 1,895 kg (4,178 lbs) |
| Fuel tank capacity | 40.0 liters (10.6 US gal.; 8.8 Imp. gal) |
| Battery | Gas: 12V; Diesel: 2x6V |
| Cabin type | Open operator station |
| Engine | |
| Engine model | David Brown |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 4 |
| Fuel type | Diesel |
| Displacement | 2.5 L, 2,524 cm2, (154.0 cu·in) |
| Bore and stroke | 89.0 mm X 102.0 mm (3.5 in X 4.02 in) |
| Compression ratio | 17.0:1 |
| Horsepower | 35.5 PS (26.1 kW; 35 HP) at 2,000 rpm |
| Starter | Electric |
| Oil capacity: | 9.6 L (10.1 US. qt, 8.4 Imp. qt.) |
| Coolant capacity: | 13.6 L (14.4 US. qt, 12 Imp. qt.) |
| Engine | |
| Engine model | David Brown |
| Engine type | Four-stroke, liquid-cooled, inline |
| Cylinders | 4 |
| Fuel type | Gasoline |
| Displacement | 2.5 L, 2,524 cm2, (154.0 cu·in) |
| Bore and stroke | 89.0 mm X 102.0 mm (3.5 in X 4.02 in) |
| Compression ratio | 6.25:1 |
| Horsepower | 35.5 PS (26.1 kW; 35 HP) at 2,000 rpm |
| Starter | Electric |
| Transmission and chassis | |
| Chassis | 4×2 2WD |
| Steering type | Manual |
| Brakes | Differential mechanical expanding shoe |
| Final drive | Spur gear |
| Transmission model | |
| Transmission type | Unsynchronized gear with dry disc clutch |
| Gears | 6 forward and 2 reverse |
| Speed | Forward: 22.8 kmh (14.2 mph) Reverse: 12.4 (7.7 mph) |
| Tires | |
| Front tires | Ag: 5.00-15 |
| Rear tires | Ag: 10-28 |
| PTO (Power take-off shaft) | |
| Rear PTO type | Transmission or live (option) |
| Rear PTO speed | 540/1,000 rpm |
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