11 material differences · fewer than 12
Tractor oneFahr D 17 NHA1953–1955No measured PTO figureTractor twoInternational Harvester A/AV1939–1948No measured PTO figure
Which should you choose?
We will not advise between these two machines, because their unladen weight differs by more than 25% (57%); they were not built in overlapping years (1953–1955; 1939–1948). 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
11 material differences · 1 fields identical or within 5%, which is not counted as material
| Field | D 17 NHA | A/AV | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 16.8 hp | 19 hp | +12% A/AV |
| Engine declared | Güldner 2 DN | INTERNATIONAL HARVESTER C-113 | differs |
| Displacement declared | 1.30 L | 1.85 L | +42% A/AV |
| Maximum torque declared | 51 lb·ft · 69 N·m | — | — |
| Transmission | |||
| Top speed declared | 12.3 mph · 19.8 km/h | 9.3–12.4 mph · 15–20 km/h | differs |
| Clutch declared | Pedal operated dry Fichtel & Sachs single disc clutch | Pedal operated dry ROCKFORD single plate clutch | differs |
| Hydraulics & hitch | |||
| Pressure declared | 3,129 psi · 216 bar | — | — |
| Rear PTO speeds declared | 540 rpm | 541 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 2,932 lb · 1,330 kg | 1,870 lb · 848 kg | +57% D 17 NHA |
| Maximum permissible mass declared | 4,409 lb · 2,000 kg | — | — |
| Wheelbase declared | 64.4 in · 1,635 mm | 71.1 in · 1,807 mm | +11% A/AV |
| Length declared | 104.3 in · 2,650 mm | 106.3 in · 2,699 mm | — |
| Width declared | 61.5 in · 1,562 mm | 55.9–76.7 in · 1,419–1,949 mm | differs |
| Ground clearance declared | 18.1 in · 460 mm | 21.9 in · 556 mm | +21% A/AV |
| Turning radius, braked declared | 8.0 ft · 2.45 m | 9.0 ft · 2.74 m | +12% A/AV |
| Fuel tank declared | 26.4 qt · 25 L | 40.0 qt · 37.9 L | +52% A/AV |
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.
Fahr D 17 NHA sources
- Source: Traktorenlexikon, “Fahr D 17 NHA”
- Source: Traktorenlexikon, “MAN AS 718 A”
International Harvester A/AV sources
- Source: Traktorenlexikon, “McCormick Farmall-A”
- Source: Traktorenlexikon, “IHC Farmall-A”
- Source: Traktorenlexikon, “Farmall Farmall-A”