David Brown
David Brown 3800 Selectamatic
The David Brown 3800 Selectamatic is a utility tractor produced from 1968 to 1971 in Meltham Mills, Huddersfield, England. It features a 2.4L 3-cylinder liquid-cooled gasoline engine, with estimated engine power around 43.3 hp. The tractor offers transmission options of 6-speed or 12-speed gearboxes with dry disc clutch. It has a PTO power of about 39 hp and drawbar tested power of 32.13 hp. The hydraulics system is Selectamatic type with 6 gallons capacity and 2000 psi pressure. The tractor has two-wheel drive with manual steering and optional power assist. Dimensions include a 76 inch wheelbase, 115.625 inch length, and operating weight of 3885 lbs. It uses agricultural tires sized 6.00-16 front and 13.6/12-28 rear. The tractor hitch is type I with position and draft control and rear lift capacity of 1600 lbs working weight.
Power43 hp[P]
Founded1968 - 1971
Model3800
Technical Specifications
Detailed specifications and technical data for David Brown 3800 Selectamatic
Power
| PTO (tested) | 39.16 hp (29.2 kW) |
|---|---|
| PTO (claimed) | 39 hp (29.1 kW) |
| Drawbar (tested) | 32.13 hp (24.0 kW) |
Tires
| Ag rear | 13.6/12-28, 14.9/13-28 |
|---|---|
| Ag front | 6.00-16, 14.9/13-24 |
Engine
| Make | David Brown |
|---|---|
| Type | gasoline |
| Torque | 115 lb-ft (155.9 Nm) |
| Cooling | liquid-cooled |
| Cylinders | 3-cylinder |
| Rated RPM | 2200 |
| Torque RPM | 1400 |
| Air cleaner | oil bath |
| Bore/Stroke | 3.939x4.000 inches (100 x 102 mm) |
| Displacement | 146.1 ci (2.4 L) |
| Oil capacity | 6.75 qts (6.4 L) |
| Operating RPM | 700-2200 |
| Starter volts | 12 |
| Coolant capacity | 9 qts (8.5 L) |
| Compression ratio | 6.75:1 |
Capacity
| Fuel | 9.5 gal (36.0 L) |
|---|---|
| Hydraulic system | 6 gal (22.7 L) |
Dimensions
| Width | 64.5 inches (min) (163 cm) |
|---|---|
| Length | 115.625 inches (293 cm) |
| Wheelbase | 76 inches (193 cm) |
| Rear tread | 48 to 76 inches (121 to 193 cm), 60 to 80 inches (152 to 203 cm) (PAVT) |
| Front tread | 48 to 72 inches (121 to 182 cm) |
| Height (hood) | 51.25 inches (130 cm) |
| Ballasted weight | 5835 lbs (2646 kg) |
| Operating weight | 3885 lbs (1762 kg) |
| Clearance (drawbar) | 11.75 inches (29 cm) |
| Clearance (front axle) | 17.5 inches (44 cm) |
Hydraulics
| Type | Selectamatic |
|---|---|
| Capacity | 6 gal (22.7 L) |
| Pressure | 2000 psi (137.9 bar) |
| Pump flow | 7.3 gpm (27.6 lpm) |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Brakes | Mechanical shoe brakes |
| Steering | manual, power-assist optional |
| Final drives | spur gear |
| Differential lock | rear diff lock standard |
| Operating station | Open operating station |
Production
| Type | Utility tractor |
|---|---|
| Built in | Meltham Mills, Huddersfield, England |
| Original price | $4,000 (1971) |
| Years produced | 1968 - 1971 |
Transmission
| Type | gear |
|---|---|
| Clutch | dry disc |
| Oil capacity | 24 qts (22.7 L) |
| Gears (option 1) | 6 forward and 2 reverse |
| Gears (option 2) | 12 forward and 4 reverse |
Tractor hitch
| Control | position and draft control |
|---|---|
| Rear Type | I |
| Rear lift (static) | 1950 lbs (884 kg) |
| Rear lift (working) | 1600 lbs (725 kg) |
Power Take-off (PTO)
| Rear PTO | live |
|---|---|
| Rear PTO Type | 540/1000 |
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