7 material differences · fewer than 12
Tractor oneJohn Deere R1949–1954No measured PTO figureTractor twoPorsche-Diesel Master 4191960–1963No measured PTO figure
Which should you choose?
We will not advise between these two machines, because their unladen weight differs by more than 25% (60%); they were not built in overlapping years (1949–1954; 1960–1963). 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 · 2 fields identical or within 5%, which is not counted as material
| Field | R | Master 419 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 48.7 hp | 49.1 hp | — |
| Engine declared | John Deere R-1358 | Porsche-Diesel F 419 | differs |
| Displacement declared | 6.81 L | 3.50 L | +95% R |
| Transmission | |||
| Top speed declared | 11.2 mph · 18 km/h | 12.1 mph · 19.4 km/h | +8% Master 419 |
| Clutch declared | Hand lever operated dry JOHN DEERE double plate clutch | — | — |
| Hydraulics & hitch | |||
| Pump flow declared | — | 5.9 gpm · 22.2 L/min | — |
| Rear PTO speeds declared | 536 rpm | 579/1135 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 7,401 lb · 3,357 kg | 4,630 lb · 2,100 kg | +60% R |
| Maximum permissible mass declared | — | 7,771 lb · 3,525 kg | — |
| Wheelbase declared | 85.1 in · 2,162 mm | 85.3 in · 2,166 mm | — |
| Length declared | 147.0 in · 3,734 mm | 137.0 in · 3,480 mm | +7% R |
| Width declared | 79.5 in · 2,019 mm | 74.3 in · 1,886 mm | +7% R |
| Ground clearance declared | — | 15.7 in · 400 mm | — |
| Turning radius, braked declared | — | 11.8 ft · 3.61 m | — |
| Fuel tank declared | 88.0 qt · 83.3 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.
John Deere R sources
- Source: Traktorenlexikon, “John Deere Modell R”
Porsche-Diesel Master 419 sources
- Source: Traktorenlexikon, “Porsche-Diesel Master N419”