8 material differences · fewer than 12
Tractor oneDeutz (KHD) D 50.1S (D 55)1962–1965No measured PTO figureTractor twoFord 4000 (A) 6X/6Y1964–1975No measured PTO figure
Which should you choose?
Read our verdict on the D 50.1S (D 55) and the 4000 (A) 6X/6Y → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
8 material differences · 2 fields identical or within 5%, which is not counted as material
| Field | D 50.1S (D 55) | 4000 (A) 6X/6Y | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 51.1 hp | 51.2 hp | — |
| Engine declared | — | Ford ND 2.506 E or 2.512 E | — |
| Displacement declared | — | 3.29 L | — |
| Transmission | |||
| Top speed declared | 12.4–17.4 mph · 20–28 km/h | 12.4–18.6 mph · 20–30 km/h | differs |
| Clutch declared | Double clutch in the flywheel | Dry Borg & Beck double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | — | 5.3 gpm · 20.1 L/min | — |
| Pressure declared | — | 2,489 psi · 172 bar | — |
| Rear PTO speeds declared | 540/1060 rpm | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 5,004 lb · 2,270 kg | 4,579 lb · 2,077 kg | +9% D 50.1S (D 55) |
| Wheelbase declared | 86.6 in · 2,200 mm | 84.5 in · 2,146 mm | — |
| Length declared | 146.5 in · 3,720 mm | 138.6 in · 3,520 mm | +6% D 50.1S (D 55) |
| Width declared | 70.9 in · 1,800 mm | 60.0 in · 1,524 mm | +18% D 50.1S (D 55) |
| Ground clearance declared | 19.9 in · 505 mm | 17.3 in · 440 mm | +15% D 50.1S (D 55) |
| Turning radius, braked declared | 12.5 ft · 3.80 m | 10.7 ft · 3.25 m | +17% D 50.1S (D 55) |
| Fuel tank declared | — | 63.9 qt · 60.5 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.
Deutz (KHD) D 50.1S (D 55) sources
- Source: Traktorenlexikon, “Deutz D 50.1S (D 55)”
Ford 4000 (A) 6X/6Y sources
- Source: Traktorenlexikon, “Ford 4000”