Introduction
David Brown 25: A Classic Utility Tractor
Produced between 1953 and 1958, the David Brown 25 is a two-wheel drive utility tractor belonging to the manufacturer's Series 30. Designed for general agricultural tasks, this 32-horsepower machine represents the mid-century evolution of mechanical farming equipment.
Engine and Performance
The tractor is powered by a 4-cylinder, liquid-cooled engine with a 154 cubic inch (2.5 L) displacement, engineered to run on kerosene. It operates at a rated speed of 1600 RPM. The engine features a 4.7:1 compression ratio and is started via a 12-volt electrical system using a generator for charging.
Transmission and Drivetrain
Power is transferred to the rear wheels through a gear-type transmission providing 6 forward and 2 reverse speeds. The system incorporates a dry plate clutch for manual gear engagement. Steering is manually operated, and braking is managed through mechanical shoe brakes.
Hydraulics and PTO
The David Brown 25 is equipped with a rear power take-off (PTO) operating at 540 RPM, allowing it to power various implements. The hydraulic system provides a total flow of 9.5 gpm (36.0 lpm), supporting a rear three-point hitch lift capacity of 1,300 lbs (589 kg).
Dimensions and Chassis
The tractor features a wheelbase of 74.8 inches (189 cm) and a total length of 113 inches (287 cm). With a ground clearance of 15.4 inches (39 cm), it is suited for varied field conditions. The front tread is adjustable from 49.5 to 62 inches, while the rear tread ranges from 48 to 68 inches. The unit weighs 3,715 lbs (1685 kg) and rolls on 6.00-19 front and 11-28 rear agricultural tires.
Conclusion
The David Brown 25 is a representative example of 1950s agricultural engineering, characterized by its straightforward mechanical design and versatility. It remains a notable model for collectors and enthusiasts of vintage farm machinery who value period-correct, manual-operation tractors.
Production Information of David Brown, 25
| Manufacturer | David Brown |
|---|
Dimension and Tires Information of David Brown, 25
| Wheelbase | 74.8 inches [189 cm] |
|---|---|
| Front tread | 49.5 to 62 inches [125 to 157 cm] |
| Ground clearance | 15.4 inches [39 cm] |
| Length | 113 inches [287 cm] |
| Rear tread | 48 to 68 inches [121 to 172 cm] |
| Weight | 3,715 lbs [1685 kg] |
| Ag front | 6.00-19 |
|---|---|
| Ag rear | 11-28 |
Engine Specifications of David Brown, 25
- David Brown
- Liquid-cooled
- Kerosene
- 4-cylinder
| Compression | 4.7:1 |
|---|---|
| Displacement | 154 ci [2.5 L] |
| Rated RPM | 1600 |
| Bore/Stroke | 3.50x4.00 inches [89 x 102 mm] |
| Starter volts | 12 |
| Rated RPM | 1600 |
Transmission Information of David Brown, 25
Transmission variants 1
| Type | Gear |
|---|---|
| Gears | 6 forward and 2 reverse |
| Clutch | Dry plate |
Mechanical Specs of David Brown, 25
- Two-wheel drive
- Open operator station.
- Mechanical shoe brakes
| Steering | Manual |
|---|
Power Information of David Brown, 25
| Rear PTO Type | 540 |
|---|
Hydraulics Specifications of David Brown, 25
| Total flow | 9.5 gpm [36.0 lpm] |
|---|
Three-Point Hitch of David Brown, 25
| Rear lift | 1,300 lbs [589 kg] |
|---|
Electrical System of David Brown, 25
| Charging system | Generator |
|---|
Where it sits
With 32 HP, the David Brown 25 sits just below 30 (34 HP) in David Brown's range. Its power puts it in the 40th percentile of 1950s models in our database (592 machines).
Frequently asked questions
How much horsepower does the David Brown 25 have?
The David Brown 25 delivers 32 HP.
What years was the David Brown 25 produced?
The David Brown 25 was produced in 1953-1958.
What engine does the David Brown 25 have?
The David Brown 25 is powered by a 4-cylinder engine.
What transmission does the David Brown 25 use?
The David Brown 25 uses a Gear transmission.
How much does the David Brown 25 weigh?
The David Brown 25 weighs 3,715 lbs [1685 kg].
Is the David Brown 25 4WD?
The David Brown 25 is available in 2WD.