SPECS / COMPARISON
David Brown 900 vs Allis Chalmers WD45
A detailed comparison of the David Brown 900 and the Allis Chalmers WD45. Click a model name to view its full specifications.
Weight
David Brown 9001770.0 kg (Diesel: 4001.4 lbs (1815.0 kg) Kerosene: 3902.2 lbs)
Allis Chalmers WD451810.0 kg (3990.4 lbs)
| Specification | David Brown 900 Agricultural Tractors | Allis Chalmers WD45 Agricultural Tractors |
|---|---|---|
| Tractor Type | Row-Crop Tractor | Row-Crop Tractor |
| Horsepower | 33.9 kW (45.5 HP) | — |
| Weight | 1770.0 kg (Diesel: 4001.4 lbs (1815.0 kg) Kerosene: 3902.2 lbs) | 1810.0 kg (3990.4 lbs) |
| Lift Capacity | 816.0 kg (1799.0 lbs) | — |
| Transmission Type | Gear type | Sliding gear with wet disc clutch |
| Length | 287.0 cm (113.0 in.) | 325.0 cm (128.0 in.) |
| Years Made | 1956-1958 | 1953-1957 |
| Engine Model | David Brown PAG4/30H | Allis-Chalmers WD45D |
| Engine Type | 4-stroke, liquid-cooled, inline | 4-stroke, liquid-cooled, inline |
| Fuel Type | Gasoline | Diesel |
| Cylinders | 4 | 6 |
| Displacement | 2704 cc (165.0 cu in.) | 3769 cc (230.0 cu in.) |
| Bore | 9.19 cm (3.62 in.) | 8.71 cm (3.43 in.) |
| Stroke | 10.21 cm (4.02 in.) | 10.49 cm (4.13 in.) |
| Rear PTO Type | Transmission or live | Live |
| Rear PTO Speed | 540 RPM | 540 RPM |
| Rated RPM | 2200 RPM | — |
| Compression Ratio | 7.0:1 | 15.5:1 |
| Starter | Electric | electric |
| Height | 197.0 cm (77.6 in.) | 207.0 cm (81.5 in.) |
| Wheelbase | 182.0 cm (71.7 in.) | 223.0 cm (87.8 in.) |
| Ground Clearance | 40.0 cm (Front axle: 15.7 in.) | — |
| Fuel Tank Capacity | 43.5 l (11.5 gal) | 56.8 l (15.0 gal) |
| Oil Capacity | 6.6 l (1.7 gal) | 6.6 l (1.7 gal) |
| Coolant Capacity | 13.2 l (3.5 gal) | 16.0 l (4.2 gal) |
| Transmission Model | David Brown | — |
| Gears | 6 forward and 2 reverse | 4 forward and 1 reverse |
| Chassis | 4×2 2WD | 4×2 2WD |
| Max. Travel Speed | 10.7 km/h (Forward: 15.2 MPH (24.5 km/h) Reverse: 6.6 MPH) | 5.2 km/h (Forward: 11.2 MPH (18.0 km/h) Reverse: 3.2 MPH) |
| Brakes | Mechanical drum | Mechanical band |
| Drawbar Category | I | — |
| Cabin Type | Open operator station | Open operator station. Allis-Chalmers Half Cab |
| Steering Type | Manual | Manual or power |
| Front Tires | Ag: 6.00×16 | Ag: 5.50-16 |
| Rear Tires | Ag: 11.25×28 | Ag: 12-28, 13-28 |
| Torque Speed | — | 390.5 N·m (288.0 lb-ft) |
| Battery | — | 6 V, CCA:115 |
| Transmission Oil Capacity | — | 16.0 l (4.2 gal) |
| Hitch Type | — | Snap-Coupler |
Values come from the manufacturer-sourced model files; empty cells mean the property is not published for that model. No performance ranking is applied.