12 material differences
Tractor oneFord 4.0001962–1965No measured PTO figureTractor twoSOMECA SOM-551961–1963No measured PTO figure
Which should you choose?
We will not advise between these two machines, because their unladen weight differs by more than 25% (83%). 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
12 material differences · 1 fields identical or within 5%, which is not counted as material
| Field | 4.000 | SOM-55 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 54.3 hp | 54.3 hp | — |
| Engine declared | — | O.M.-FIAT CO 1D/55 | — |
| Displacement declared | — | 4.16 L | — |
| Transmission | |||
| Top speed declared | 18.6 mph · 30 km/h | 14.9 mph · 24 km/h | +25% 4.000 |
| Clutch declared | Pedal-operated dry single-plate clutch | pedal operated two stage dry FERODO double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 4.0 gpm · 15.1 L/min | 5.7 gpm · 21.5 L/min | +42% SOM-55 |
| Pressure declared | — | 2,988 psi · 206 bar | — |
| Rear PTO speeds declared | 540 rpm / 1000 rpm | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 3,161 lb · 1,434 kg | 5,776 lb · 2,620 kg | +83% SOM-55 |
| Wheelbase declared | 84.5 in · 2,146 mm | 80.0 in · 2,032 mm | +6% 4.000 |
| Length declared | 120.8 in · 3,069 mm | 140.9 in · 3,580 mm | +17% SOM-55 |
| Width declared | 63.9–87.5 in · 1,623–2,223 mm | 68.7–95.1 in · 1,745–2,415 mm | differs |
| Height, over the steering wheel declared | 56.9 in · 1,446 mm | 72.5 in · 1,841 mm | +27% SOM-55 |
| Ground clearance declared | 21.5 in · 546 mm | 15.4 in · 390 mm | +40% 4.000 |
| Turning radius, braked declared | 9.4 ft · 2.87 m | 10.8 ft · 3.30 m | +15% SOM-55 |
| Fuel tank declared | 67.9 qt · 64.3 L | 93.0 qt · 88.0 L | +37% SOM-55 |
Ford 4.000 sources
Source
- Source: Traktorenlexikon, “Ford 4000 (USA)”
SOMECA SOM-55 sources
Source
- Source: Traktorenlexikon, “Someca SOM 55”