8 material differences · fewer than 12
Tractor oneALLIS-CHALMERS FD-41962–1965No measured PTO figureTractor twoMassey Ferguson MF 371963–1965No measured PTO figure
Which should you choose?
We will not advise between these two machines, because their unladen weight differs by more than 25% (28%). 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 | FD-4 | MF 37 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 41.4 hp | 41.4 hp | — |
| Engine declared | VENDEUVRE 56 | Perkins A 3.152 | differs |
| Displacement declared | — | 2.50 L | — |
| Maximum torque declared | — | 116 lb·ft · 158 N·m | — |
| Transmission | |||
| Top speed declared | 12.4 mph · 20 km/h | 15.5 mph · 25 km/h | +25% MF 37 |
| Clutch declared | Pedal operated dry two stage double clutch | Pedal operated dry Laycock single clutch with 279 mm disc diameter | differs |
| Hydraulics & hitch | |||
| Pump flow declared | — | 4.2 gpm · 15.9 L/min | — |
| Pressure declared | — | 2,304 psi · 159 bar | — |
| Rear PTO speeds declared | 540/1000 rpm | 1337 | differs |
| Weight & dimensions | |||
| Unladen weight declared | 4,057 lb · 1,840 kg | 3,179 lb · 1,442 kg | +28% FD-4 |
| Wheelbase declared | 84.6 in · 2,150 mm | 72.0 in · 1,830 mm | +17% FD-4 |
| Length declared | 120.1 in · 3,050 mm | 116.9 in · 2,970 mm | — |
| Width declared | 66.1 in · 1,680 mm | 63.8 in · 1,620 mm | — |
| Ground clearance declared | 18.5 in · 470 mm | 13.4 in · 340 mm | +38% FD-4 |
| Turning radius, braked declared | — | 8.7 ft · 2.66 m | — |
| Fuel tank declared | 63.4 qt · 60.0 L | 40.7 qt · 38.5 L | +56% FD-4 |
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: Traktorenlexikon, “Allis-Chalmers FD 4”
Massey Ferguson MF 37 sources
- Source: Traktorenlexikon, “Massey Ferguson MF 37”
- Source: Traktorenlexikon, “Massey Ferguson MF 233”
- Source: Traktorenlexikon, “Massey Ferguson MF 37 S”