7 material differences · fewer than 12
Tractor oneGüldner AF 151949–1954No measured PTO figureTractor twoInternational Harvester W-121934–1938No measured PTO figure
Which should you choose?
Read our verdict on the AF 15 and the W-12 → 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 | AF 15 | W-12 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 16.6 hp | 15.8 hp | — |
| Engine declared | Güldner 2 D 15 | INTERNATIONAL HARVESTER 113 | differs |
| Displacement declared | 1.30 L | 1.85 L | +42% W-12 |
| Maximum torque declared | 54 lb·ft · 74 N·m | — | — |
| Transmission | |||
| Top speed declared | 12.4 mph · 20 km/h | 3.7 mph · 6.0 km/h | +233% AF 15 |
| Clutch declared | Pedal operated dry single-plate clutch from Fichtel & Sachs type K-12 Z | — | — |
| Hydraulics & hitch | |||
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 2,701 lb · 1,225 kg | 2,899 lb · 1,315 kg | +7% W-12 |
| Maximum permissible mass declared | 3,307 lb · 1,500 kg | — | — |
| Wheelbase declared | 61.0 in · 1,550 mm | 60.0 in · 1,524 mm | — |
| Length declared | 104.3 in · 2,650 mm | 103.0 in · 2,616 mm | — |
| Width declared | 62.1 in · 1,578 mm | 50.0 in · 1,270 mm | +24% AF 15 |
| Height, over the steering wheel declared | 59.1 in · 1,500 mm | 55.0 in · 1,397 mm | +7% AF 15 |
| Ground clearance declared | 15.7 in · 400 mm | — | — |
| Turning radius, braked declared | — | 14.0 ft · 4.27 m | — |
| Fuel tank declared | 21.1 qt · 20 L | 44.0 qt · 41.6 L | +108% W-12 |
Güldner AF 15 sources
Source
- Source: Traktorenlexikon, “Güldner AF 15”
- Source: Traktorenlexikon, “Fahr D 17”
International Harvester W-12 sources
Source
- Source: Traktorenlexikon, “McCormick W-12”
- Source: Traktorenlexikon, “McCormick F-12-G”