David Brown 850 Specs ( 1960-1965 )
Production
| Description | Utility tractor / Built in Meltham Mills, Huddersfield, England |
|---|---|
| Manufacturer | David Brown |
Engine
| Engine type | David Brown 2.5L 4-cyl diesel / David Brown 2.5L 4-cyl gasoline |
|---|---|
| Fuel tank | 10.6 gal (40.1 L) |
| Air cleaner | oil bath / oil bath |
| Bore/Stroke | 3.50x4.00 inches (89 x 102 mm) / 3.50x4.00 inches (89 x 102 mm) |
| Compression | 17:1 / 6.25:1 |
| Coolant capacity | 14.4 qts (13.6 L) |
| Description | David Brown / diesel / 4-cylinder / liquid-cooled / David Brown / gasoline / 4-cylinder / liquid-cooled |
| Displacement | 154 ci (2.5 L) / 154 ci (2.5 L) |
| Fuel system | direct injection |
| Idle RPM | 700-2000 |
| Oil capacity | 10.1 qts (9.6 L) |
| Power | 35 hp (26.1 kW) |
| Rated RPM | 2000 / 2000 |
| Starter volts | 12 / 12 |
| Engine type | David Brown 2.5L 4-cyl diesel / David Brown 2.5L 4-cyl gasoline |
| Drawbar (claimed) | 30 hp (22.4 kW) |
| Drawbar (tested) | 30.93 hp (23.1 kW) |
| PTO (claimed) | 33 hp (24.6 kW) |
| PTO (tested) | 33.56 hp (25.0 kW) |
Transmission
| Clutch | dry disc |
|---|---|
| Description | Three gears (1-3) plus reverse (R) in two ranges (low and high). |
| Gears | 6 forward and 2 reverse |
| Transmission type | 6-speed unsynchronized gear |
| Type | unsynchronized gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Description | Manual steering / Differential mechanical expanding shoe brakes |
| Drive type | Two-wheel drive |
| Final drives | spur gear |
Hitch
| Rear Type | I |
|---|
PTO
| Clutch | dry disc |
|---|---|
| Engine RPM | 540@1800 |
| Rear PTO | transmission |
| Rear PTO Type | 540/1000 (1.375) |
Dimensions & Tires
| Ag front | 5.00-15 |
|---|---|
| Ag rear | 10-28 |
| Front tread | 52/56/60/64/68/72 inches (132/142/152/162/172/182 cm) |
| Height (hood) | 51.75 inches (131 cm) |
| Length | 113.5 inches (288 cm) |
| Rear tread | 52/56/60/64/68/72 inches (132/142/152/162/172/182 cm) |
| Wheelbase | 75.25 inches (191 cm) |
| Front tire | 5.00-15 |
| Rear tire | 10-28 |
| Weight | 3750 to 4179 pounds |
| Wheelbase | 75.25 inches (191 cm) |
David Brown 850 Weight
| Ballasted | 5874 lbs (2664 kg) |
|---|---|
| Diesel Operating | 4179 lbs (1895 kg) |
| Gas Operating | 4094 lbs (1857 kg) |
| Shipping | 3750 lbs (1701 kg) |
Nebraska Tractor Test 734
| Description | Diesel 6-speed 2WDMarch 12 - 26, 1960Link: Nebraska Tractor Test 734 file / PTO performance / Drawbar performance / Gear 3 used for power test. |
|---|---|
| Fuel use | 2.2 gal/hour (8.3 l/hour) / 1.7 gal/hour (6.4 l/hour) / 2.3 gal/hour (8.7 l/hour) |
| Max power | 30.93 hp (23.1 kW) |
| Power at rated engine speed | 33.56 hp (25.0 kW) |
| Power at rated PTO speed | 28.24 hp (21.1 kW) |
Nebraska Tractor Test 735
| Description | Gasoline 6-speed 2WDMarch 14 - April 2, 1960Link: Nebraska Tractor Test 735 file / PTO performance / Drawbar performance / Gear 3 used for power test. |
|---|---|
| Fuel use | 3.0 gal/hour (11.4 l/hour) / 2.6 gal/hour (9.8 l/hour) / 3.0 gal/hour (11.4 l/hour) |
| Max power | 27.64 hp (20.6 kW) |
| Power at rated engine speed | 32.00 hp (23.9 kW) |
| Power at rated PTO speed | 28.52 hp (21.3 kW) |
Speeds
| Description | With 10-28 rear tires. |
|---|
Tractor Tests
| Description | NTTL 734: diesel 6-speed 2WD / NTTL 735: gasoline 6-speed 2WD |
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