David Brown Cropmaster Diesel Specs ( 1949-1953 )
Overview
The David Brown Cropmaster Diesel is a utility farm tractor produced between 1949 and 1953, featuring a 2.5L four-cylinder liquid-cooled diesel engine rated at 34 hp. The machine is configured with a two-wheel drive system, manual steering, and an open operator station. Listed specifications include a 71.5-inch wheelbase, a Type I rear hitch, and a total weight of 2950 lbs.
Ideal Applications
Engine Performance Data:
The 154 cubic inch engine operates with a 15.9:1 compression ratio and is rated at 34 hp at 1800 RPM.
Transmission and Drive Layout:
The mechanical system is equipped with a dry disc clutch and a gear transmission offering up to 6 forward speeds and 2 reverse gears across high and low ranges.
Chassis and Tire Specifications:
The tractor features 16 inches of ground clearance and can be equipped with either 9.00-28 agricultural tires or 42x10 steel rear wheels.
Production
| Description | Utility tractor |
|---|---|
| Manufacturer | David Brown |
Engine
| Engine type | David Brown 2.5L 4-cyl diesel |
|---|---|
| Bore/Stroke | 3.50x4.00 inches (89 x 102 mm) |
| Compression | 15.9:1 |
| Description | David Brown / diesel / 4-cylinder / liquid-cooled |
| Displacement | 154 ci (2.5 L) |
| Idle RPM | 700-1800 |
| Power | 34 hp (25.4 kW) |
| Rated RPM | 1800 |
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) |