8 material differences · fewer than 12
Tractor oneIMR-RAKOVICA R-60from 1967No measured PTO figureTractor twoPorsche-Diesel Master 4181960No measured PTO figure
Which should you choose?
We will not advise between these two machines, because they were not built in overlapping years (1967–1967; 1960–1960). 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
8 material differences · 6 fields identical or within 5%, which is not counted as material
| Field | R-60 | Master 418 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 49.3 hp | 49.1 hp | — |
| Engine declared | IMR-PERKINS M-34/T | Porsche-Diesel F 418 | differs |
| Displacement declared | 3.34 L | 3.29 L | — |
| Maximum torque declared | 138 lb·ft · 187 N·m | 132 lb·ft · 178 N·m | — |
| Transmission | |||
| Top speed declared | 18.6 mph · 30 km/h | 12.1 mph · 19.4 km/h | +55% R-60 |
| Clutch declared | Pedal-operated, two-stage dry IKARUS double clutch | — | — |
| Hydraulics & hitch | |||
| Pump flow declared | 9.5 gpm · 36.1 L/min | 6.6 gpm · 25 L/min | +44% R-60 |
| Rear PTO speeds declared | 540 rpm | 579/1135 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 4,784 lb · 2,170 kg | 4,630 lb · 2,100 kg | — |
| Maximum permissible mass declared | — | 8,488 lb · 3,850 kg | — |
| Wheelbase declared | 80.7 in · 2,050 mm | 85.3 in · 2,166 mm | +6% Master 418 |
| Length declared | 149.6 in · 3,800 mm | 133.1 in · 3,380 mm | +12% R-60 |
| Width declared | 73.2 in · 1,860 mm | 73.4 in · 1,865 mm | — |
| Ground clearance declared | 17.7 in · 450 mm | 15.7 in · 400 mm | +13% R-60 |
| Turning radius, braked declared | 11.2 ft · 3.41 m | 11.3 ft · 3.45 m | — |
| Fuel tank declared | 63.4 qt · 60.0 L | 48.6 qt · 46 L | +30% R-60 |
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.
IMR-RAKOVICA R-60 sources
- Source: Traktorenlexikon, “Rakovica R 60”
- Source: Traktorenlexikon, “IMT 558”
Porsche-Diesel Master 418 sources
- Source: Traktorenlexikon, “Porsche-Diesel Master N418”