7 material differences · fewer than 12
Tractor oneDavid Brown 850 Implematic1960–1965No measured PTO figureTractor twoInternational Harvester DGD 41953–1956No measured PTO figure
Which should you choose?
We will not advise between these two machines, because they were not built in overlapping years (1960–1965; 1953–1956). The figures below are side by side so you can judge them yourself; each says whether it was measured, claimed or declared by its source.
Field by field
7 material differences · 6 fields identical or within 5%, which is not counted as material
| Field | 850 Implematic | DGD 4 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 35.0 hp | 29.6 hp | +18% 850 Implematic |
| Engine declared | DAVID BROWN AD 4/36 A-106 | INTERNATIONAL-HARVESTER DD-132 | differs |
| Displacement declared | 2.52 L | 2.18 L | +16% 850 Implematic |
| Maximum torque declared | 110 lb·ft · 149 N·m | 91 lb·ft · 123 N·m | +21% 850 Implematic |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 12.4 mph · 20 km/h | +25% 850 Implematic |
| Clutch declared | Pedal-operated dry BORG & BECK single-plate clutch type 10 inch | pedal-operated dry single-plate clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 6.0 gpm · 22.7 L/min | — | — |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 3,704 lb · 1,680 kg | 3,814 lb · 1,730 kg | — |
| Wheelbase declared | 75.2 in · 1,911 mm | 70.0 in · 1,778 mm | +7% 850 Implematic |
| Length declared | 114.0 in · 2,896 mm | 111.6 in · 2,834 mm | — |
| Width declared | 62.8 in · 1,594 mm | 64.2 in · 1,630 mm | — |
| Ground clearance declared | 15.5 in · 394 mm | 15.4 in · 390 mm | — |
| Turning radius, braked declared | 7.9 ft · 2.41 m | 8.9 ft · 2.70 m | +12% DGD 4 |
| Fuel tank declared | 42.1 qt · 39.8 L | 41.2 qt · 39.0 L | — |
Height is not in this table. It is not one measurement: the sources measure it to different points — over the cab on some machines, over the steering wheel or the exhaust on others — and the same tractor measured two ways can differ by most of a metre. It appears here only when both machines' figures carry the point they were measured to and it is the same point, which is not the case for these two. Each machine's own page prints its height as its source gives it.
David Brown 850 Implematic sources
- Source: Traktorenlexikon, “David Brown 850”
International Harvester DGD 4 sources
- Source: Traktorenlexikon, “McCormick DGD 4”