7 material differences · fewer than 12
Tractor oneALLIS-CHALMERS FD-31962–1965No measured PTO figureTractor twoFahr D 25 H1951–1953No measured PTO figure
Which should you choose?
Read our verdict on the FD-3 and the D 25 H → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
7 material differences · 4 fields identical or within 5%, which is not counted as material
| Field | FD-3 | D 25 H | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 24.7 hp | 24.7 hp | — |
| Engine declared | VENDEUVRE 52 | KHD F2M 414 | differs |
| Displacement declared | — | 2.20 L | — |
| Maximum torque declared | 53 lb·ft · 71.6 N·m | 88 lb·ft · 120 N·m | +68% D 25 H |
| Transmission | |||
| Top speed declared | 12.4 mph · 20 km/h | 11.9 mph · 19.2 km/h | — |
| Clutch declared | Pedal operated dry two stage double clutch | — | — |
| Hydraulics & hitch | |||
| Pressure declared | — | 3,129 psi · 216 bar | — |
| Rear PTO speeds declared | 540/1000 rpm | 540 | differs |
| Weight & dimensions | |||
| Unladen weight declared | 3,153 lb · 1,430 kg | 4,145 lb · 1,880 kg | +31% D 25 H |
| Maximum permissible mass declared | — | 4,960 lb · 2,250 kg | — |
| Wheelbase declared | 76.8–80.7 in · 1,950–2,050 mm | 72.4 in · 1,840 mm | differs |
| Length declared | 112.2 in · 2,850 mm | 114.6 in · 2,910 mm | — |
| Width declared | 63.0 in · 1,600 mm | 62.5 in · 1,588 mm | — |
| Ground clearance declared | 15.7 in · 400 mm | 15.0 in · 380 mm | +5% FD-3 |
| Turning radius, braked declared | — | 11.0 ft · 3.35 m | — |
| Fuel tank declared | 47.6 qt · 45.0 L | 54.9 qt · 52 L | +16% D 25 H |
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-3 sources
Source
- Source: Traktorenlexikon, “Allis-Chalmers FD 3”
Fahr D 25 H sources
Source
- Source: Traktorenlexikon, “Fahr D 25 H”
- Source: Traktorenlexikon, “Fahr D 22”