11 material differences · fewer than 12
Tractor oneInternational Harvester 6861976–1980No measured PTO figureTractor twoLamborghini R-475 (DT)1971–1973No measured PTO figure
Which should you choose?
Read our verdict on the 686 and the R-475 (DT) → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
11 material differences · 1 fields identical or within 5%, which is not counted as material
| Field | 686 | R-475 (DT) | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 66.1 hp | 73.0 hp | +10% R-475 (DT) |
| Engine declared | INTERNATIONAL HARVESTER C-291 | LAMBORGHINI FL-1104 | differs |
| Displacement declared | — | 4.16 L | — |
| Maximum torque declared | 220 lb·ft · 298 N·m | 190 lb·ft · 258 N·m | +16% 686 |
| Transmission | |||
| Top speed declared | 18.6 mph · 30 km/h | 15.5 mph · 25 km/h | +20% 686 |
| Clutch declared | pedal-operated dry single-plate clutch | Pedal operated dry Walterscheid double clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 12.0 gpm · 45.5 L/min | 6.4 gpm · 24.2 L/min | +88% 686 |
| Rear PTO speeds declared | 540 rpm | 540/1000 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 8,199 lb · 3,719 kg | 6,045 lb · 2,742 kg | +36% 686 |
| Wheelbase declared | 103.0 in · 2,616 mm | 89.0 in · 2,260 mm | +16% 686 |
| Length declared | 162.0 in · 4,115 mm | 149.2 in · 3,790 mm | +9% 686 |
| Width declared | 89.4 in · 2,271 mm | 66.1–93.7 in · 1,680–2,380 mm | differs |
| Ground clearance declared | 21.0 in · 533 mm | — | — |
| Turning radius, braked declared | 12.0 ft · 3.66 m | 11.8 ft · 3.60 m | — |
| Fuel tank declared | 123.9 qt · 117.3 L | 68.7 qt · 65.0 L | +80% 686 |
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.
International Harvester 686 sources
- Source: Traktorenlexikon, “IHC 686”
- Source: Traktorenlexikon, “Farmall Farmall 756”
Lamborghini R-475 (DT) sources
- Source: Traktorenlexikon, “Lamborghini R 475 (DT)”
- Source: Traktorenlexikon, “Lamborghini R 470 (DT)”