8 material differences · fewer than 12
Tractor oneHürlimann D-3001947–1954No measured PTO figureTractor twoSOMECA SOM-551961–1963No measured PTO figure
Which should you choose?
We will not advise between these two machines, because they were not built in overlapping years (1947–1954; 1961–1963). 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
8 material differences · 3 fields identical or within 5%, which is not counted as material
| Field | D-300 | SOM-55 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 54.2 hp | 54.3 hp | — |
| Engine declared | Hürlimann D-300 | O.M.-FIAT CO 1D/55 | differs |
| Displacement declared | 5.52 L | 4.16 L | +33% D-300 |
| Maximum torque declared | 205 lb·ft · 279 N·m | — | — |
| Transmission | |||
| Top speed declared | 12.4 mph · 20 km/h | 14.9 mph · 24 km/h | +20% SOM-55 |
| Clutch declared | Pedal operated dry single plate clutch | pedal operated two stage dry FERODO double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | — | 5.7 gpm · 21.5 L/min | — |
| Pressure declared | — | 2,988 psi · 206 bar | — |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 5,622 lb · 2,550 kg | 5,776 lb · 2,620 kg | — |
| Wheelbase declared | — | 80.0 in · 2,032 mm | — |
| Length declared | 110.2 in · 2,800 mm | 140.9 in · 3,580 mm | +28% SOM-55 |
| Width declared | 62.2 in · 1,580 mm | 68.7–95.1 in · 1,745–2,415 mm | differs |
| Height, over the steering wheel declared | 60.2 in · 1,530 mm | 72.5 in · 1,841 mm | +20% SOM-55 |
| Ground clearance declared | — | 15.4 in · 390 mm | — |
| Turning radius, braked declared | 10.2 ft · 3.10 m | 10.8 ft · 3.30 m | +6% SOM-55 |
| Fuel tank declared | — | 93.0 qt · 88.0 L | — |
Hürlimann D-300 sources
Source
- Source: Traktorenlexikon, “Hürlimann D 300”
SOMECA SOM-55 sources
Source
- Source: Traktorenlexikon, “Someca SOM 55”