11 material differences · fewer than 12
Tractor oneHanomag Robust 901 A (S)1969–1970No measured PTO figureTractor twoLamborghini R-904 (DT)1976–1982No measured PTO figure
Which should you choose?
Read our verdict on the Robust 901 A (S) and the R-904 (DT) → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
11 material differences · 1 fields identical or within 5%, which is not counted as material
| Field | Robust 901 A (S) | R-904 (DT) | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 91 hp | 90.8 hp | — |
| Engine declared | Hanomag D162 R2 | LAMBORGHINI FL-1154/2 | differs |
| Displacement declared | 4.71 L | 4.99 L | +6% R-904 (DT) |
| Maximum torque declared | 207 lb·ft · 281 N·m | — | — |
| Transmission | |||
| Top speed declared | 12.3–16.9 mph · 19.87–27.15 km/h | 15.5 mph · 25 km/h | differs |
| Clutch declared | Double clutch for transmission and PTO | Dry LuK double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 8.5 gpm · 32 L/min | 6.4 gpm · 24.2 L/min | +32% Robust 901 A (S) |
| Pressure declared | — | 2,418 psi · 167 bar | — |
| Rear PTO speeds declared | 540/1000 rpm | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 8,223–8,885 lb · 3,730–4,030 kg | 6,636 lb · 3,010 kg | differs |
| Wheelbase declared | 97.4–98.8 in · 2,475–2,510 mm | — | — |
| Length declared | 157.1 in · 3,990 mm | 139.0 in · 3,530 mm | +13% Robust 901 A (S) |
| Width declared | 79.3–84.6 in · 2,015–2,150 mm | 70.1–97.6 in · 1,780–2,480 mm | differs |
| Ground clearance declared | 12.6 in · 320 mm | 18.1 in · 460 mm | +44% R-904 (DT) |
| Turning radius, braked declared | 13.5 ft · 4.10 m | — | — |
| Fuel tank declared | 132.1 qt · 125 L | 63.4 qt · 60.0 L | +108% Robust 901 A (S) |
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.
Hanomag Robust 901 A (S) sources
- Source: Traktorenlexikon, “Hanomag Robust 901 A (S)”
- Source: Traktorenlexikon, “Hanomag Robust 901 (S)”
Lamborghini R-904 (DT) sources
- Source: Traktorenlexikon, “Lamborghini R 904 DT”