8 material differences · fewer than 12
Tractor oneALLIS-CHALMERS FD-41962–1965No measured PTO figureTractor twoURSUS 40111965–1970No measured PTO figure
Which should you choose?
Read our verdict on the FD-4 and the 4011 → 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 | FD-4 | 4011 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 41.4 hp | 41.4 hp | — |
| Engine declared | VENDEUVRE 56 | URSUS U-4001 | differs |
| Displacement declared | — | 3.12 L | — |
| Maximum torque declared | — | 133 lb·ft · 180 N·m | — |
| Transmission | |||
| Top speed declared | 12.4 mph · 20 km/h | 15.5 mph · 25 km/h | +25% 4011 |
| Clutch declared | Pedal operated dry two stage double clutch | — | — |
| Hydraulics & hitch | |||
| Pump flow declared | — | 5.3 gpm · 20.0 L/min | — |
| Rear PTO speeds declared | 540/1000 rpm | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 4,057 lb · 1,840 kg | 4,630 lb · 2,100 kg | +14% 4011 |
| Wheelbase declared | 84.6 in · 2,150 mm | 83.7 in · 2,125 mm | — |
| Length declared | 120.1 in · 3,050 mm | 128.0 in · 3,250 mm | +7% 4011 |
| Width declared | 66.1 in · 1,680 mm | 70.5 in · 1,790 mm | +7% 4011 |
| Ground clearance declared | 18.5 in · 470 mm | 17.2 in · 436 mm | +8% FD-4 |
| Turning radius, braked declared | — | 10.7 ft · 3.25 m | — |
| Fuel tank declared | 63.4 qt · 60.0 L | 74.0 qt · 70.0 L | +17% 4011 |
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.
ALLIS-CHALMERS FD-4 sources
Source
- Source: Traktorenlexikon, “Allis-Chalmers FD 4”
URSUS 4011 sources
Source
- Source: Traktorenlexikon, “Ursus C-4011”