David Brown Cropmaster Specs ( 1947-1953 )
Overview
The David Brown Cropmaster is a 25-horsepower utility farm tractor produced between 1947 and 1953. This model features a 154 cubic inch 4-cylinder kerosene engine and a two-wheel drive chassis with an open operator station. It was manufactured with a 71.5-inch wheelbase and provides a Category I rear hitch for implement attachment.
Ideal Applications
Engine and Power Output:
The liquid-cooled kerosene engine has a 154 cubic inch displacement and is rated at 25 hp with an operating speed of 2000 RPM.
Transmission and Mechanical Drive:
The drivetrain consists of a dry disc clutch and a gear transmission available in 4-speed or 6-speed configurations with three gears across low and high ranges.
Physical Dimensions and Clearance:
The tractor is built with a 16-inch ground clearance and features adjustable tread widths ranging from 49.3 to 62.1 inches at the front and 48 to 67.5 inches at the rear.
Production
| Description | Utility tractor |
|---|---|
| Manufacturer | David Brown |
Engine
| Engine type | David Brown 2.5L 4-cyl kerosene |
|---|---|
| Bore/Stroke | 3.50x4.00 inches (89 x 102 mm) |
| Description | David Brown / kerosene / 4-cylinder / liquid-cooled |
| Displacement | 154 ci (2.5 L) |
| Idle RPM | 600-2000 |
| Power | 25 hp (18.6 kW) |
| Rated RPM | 2000 |
Transmission
| Clutch | dry disc / dry disc |
|---|---|
| Description | Three gears (1-3) plus reverse (R) in two ranges (low/high). |
| Gears | 4 forward and 1 reverse / 6 forward and 2 reverse |
| Type | gear / gear |
| Transmission type | 4-speed gear / 6-speed gear |
| Transmission type | 4-speed gear / 6-speed gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Description | Mechanical drum brakes |
| Drive type | Two-wheel drive |
| Steering | manual |
Hitch
| Rear Type | I |
|---|
Dimensions & Tires
| Ag front | 6.00-19 / 26x5 steel |
|---|---|
| Ag rear | 9.00-28 / 42x10 steel |
| Front tread | 49.3 to 62.1 inches (125 to 157 cm) |
| Ground clearance | 16 inches (40 cm) |
| Height | 55.25 inches (140 cm) |
| Length | 111.75 inches (283 cm) |
| Rear tread | 48 to 67.5 inches (121 to 171 cm) |
| Weight | 2950 lbs (1338 kg) |
| Wheelbase | 71.5 inches (181 cm) |
| Width | 60.625 inches (153 cm) |
| Front tire | 6.00-19 |
| Rear tire | 9.00-28 |
| Weight | 2950 lbs (1338 kg) |
| Wheelbase | 71.5 inches (181 cm) |
Speeds
| Description | With 9.00-28 rear tires. |
|---|
Variants
| VAD1C | diesel |
|---|