7 material differences · fewer than 12
Tractor oneDavid Brown 770 Selematic1965–1970No measured PTO figureTractor twoRenault R-571967–1972No measured PTO figure
Which should you choose?
Read our verdict on the 770 Selematic and the R-57 → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
7 material differences · 7 fields identical or within 5%, which is not counted as material
| Field | 770 Selematic | R-57 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 33.0 hp | 42.4 hp | +28% R-57 |
| Engine declared | DAVID BROWN AD 3/49 A (B) | ALFA-SAVIEM 714/30.01 | differs |
| Displacement declared | 2.39 L | 2.49 L | — |
| Maximum torque declared | 101 lb·ft · 137 N·m | 109 lb·ft · 148 N·m | +8% R-57 |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 15.5 mph · 25 km/h | — |
| Clutch declared | Pedal-operated dry Borg & Beck single-plate clutch | Two-stage pedal-operated dry FERODO double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 5.4 gpm · 20.4 L/min | 5.6 gpm · 21.2 L/min | — |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 3,228 lb · 1,464 kg | 4,101 lb · 1,860 kg | +27% R-57 |
| Wheelbase declared | 75.0 in · 1,905 mm | 76.0 in · 1,930 mm | — |
| Length declared | 112.5 in · 2,858 mm | 128.0 in · 3,250 mm | +14% R-57 |
| Width declared | 64.6 in · 1,641 mm | 59.1–82.7 in · 1,500–2,100 mm | differs |
| Ground clearance declared | 16.5 in · 419 mm | 16.5 in · 420 mm | — |
| Turning radius, braked declared | 10.1 ft · 3.07 m | 9.8 ft · 2.98 m | — |
| Fuel tank declared | 38.5 qt · 36.4 L | 58.1 qt · 55.0 L | +51% R-57 |
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 770 Selematic sources
- Source: Traktorenlexikon, “David Brown 770”
Renault R-57 sources
- Source: Traktorenlexikon, “Renault 57 R7241”