10 material differences · fewer than 12
Tractor oneFahr D 1771958–1961No measured PTO figureTractor twoRenault R-571967–1972No measured PTO figure
Which should you choose?
We will not advise between these two machines, because they were not built in overlapping years (1958–1961; 1967–1972). 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
10 material differences · 3 fields identical or within 5%, which is not counted as material
| Field | D 177 | R-57 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 34 hp | 42.4 hp | +26% R-57 |
| Engine declared | Daimler-Benz OM 636 VI-E | ALFA-SAVIEM 714/30.01 | differs |
| Displacement declared | 1.77 L | 2.49 L | +41% R-57 |
| Maximum torque declared | 69 lb·ft · 93 N·m | 109 lb·ft · 148 N·m | +59% R-57 |
| Transmission | |||
| Top speed declared | 12.2 mph · 19.6 km/h | 15.5 mph · 25 km/h | +28% R-57 |
| Clutch declared | Pedal operated dry Fichtel & Sachs double clutch | Two-stage pedal-operated dry FERODO double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | — | 5.6 gpm · 21.2 L/min | — |
| Pressure declared | 3,556 psi · 245 bar | — | — |
| Three-point lift, at the coupling points declared | 2,866 lb · 1,300 kg | 4,409 lb · 2,000 kg | +54% R-57 |
| Rear PTO speeds declared | — | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 3,638 lb · 1,650 kg | 4,101 lb · 1,860 kg | +13% R-57 |
| Maximum permissible mass declared | 5,732 lb · 2,600 kg | — | — |
| Wheelbase declared | 76.8 in · 1,950 mm | 76.0 in · 1,930 mm | — |
| Length declared | 126.0 in · 3,200 mm | 128.0 in · 3,250 mm | — |
| Width declared | 61.1 in · 1,552 mm | 59.1–82.7 in · 1,500–2,100 mm | differs |
| Ground clearance declared | 15.7 in · 400 mm | 16.5 in · 420 mm | — |
| Turning radius, braked declared | 9.3 ft · 2.83 m | 9.8 ft · 2.98 m | +5% R-57 |
| Fuel tank declared | 46.5 qt · 44 L | 58.1 qt · 55.0 L | +25% 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.
Fahr D 177 sources
- Source: Traktorenlexikon, “Fahr D 177”
- Source: Traktorenlexikon, “Fahr D 177 S”
Renault R-57 sources
- Source: Traktorenlexikon, “Renault 57 R7241”