10 material differences · fewer than 12
Tractor oneFord 901 Powermaster1958–1962No 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% (73%). 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 · 2 fields identical or within 5%, which is not counted as material
| Field | 901 Powermaster | SOM-55 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 55.5 hp | 54.3 hp | — |
| Engine declared | — | O.M.-FIAT CO 1D/55 | — |
| Displacement declared | — | 4.16 L | — |
| Transmission | |||
| Top speed declared | 17.4 mph · 28 km/h | 14.9 mph · 24 km/h | +17% 901 Powermaster |
| Clutch declared | — | pedal operated two stage dry FERODO double clutch | — |
| 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 | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 3,344 lb · 1,517 kg | 5,776 lb · 2,620 kg | +73% SOM-55 |
| Wheelbase declared | 85.3 in · 2,167 mm | 80.0 in · 2,032 mm | +7% 901 Powermaster |
| Length declared | 132.0 in · 3,353 mm | 140.9 in · 3,580 mm | +7% SOM-55 |
| Width declared | 71.7 in · 1,821 mm | 68.7–95.1 in · 1,745–2,415 mm | differs |
| Height, over the steering wheel declared | 65.8 in · 1,671 mm | 72.5 in · 1,841 mm | +10% SOM-55 |
| Ground clearance declared | 28.4 in · 722 mm | 15.4 in · 390 mm | +85% 901 Powermaster |
| Turning radius, braked declared | 7.5 ft · 2.29 m | 10.8 ft · 3.30 m | +44% SOM-55 |
| Fuel tank declared | 81.7 qt · 77.3 L | 93.0 qt · 88.0 L | +14% SOM-55 |
Ford 901 Powermaster sources
Source
- Source: Traktorenlexikon, “Ford 901”
SOMECA SOM-55 sources
Source
- Source: Traktorenlexikon, “Someca SOM 55”