9 material differences · fewer than 12
Tractor oneALLIS-CHALMERS 1851970–1981No measured PTO figureTractor twoRenault 7511973–1980No measured PTO figure
Which should you choose?
We will not advise between these two machines, because their unladen weight differs by more than 25% (32%). 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
9 material differences · 4 fields identical or within 5%, which is not counted as material
| Field | 185 | 751 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 74.0 hp | 74.0 hp | — |
| Engine declared | ALLIS-CHALMERS D-2800 | MWM D 226-4 | differs |
| Displacement declared | 4.93 L | 4.15 L | +19% 185 |
| Maximum torque declared | — | 188 lb·ft · 255 N·m | — |
| Transmission | |||
| Top speed declared | 15.5 mph · 25 km/h | 15.5 mph · 25 km/h | — |
| Clutch declared | — | Dry LuK double clutch | — |
| Hydraulics & hitch | |||
| Hydraulic centre declared | Open centre | — | — |
| Pump flow declared | 20.0 gpm · 75.7 L/min | 8.7 gpm · 33.0 L/min | +129% 185 |
| Pressure declared | — | 2,321 psi · 160 bar | — |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 8,699 lb · 3,946 kg | 6,603 lb · 2,995 kg | +32% 185 |
| Wheelbase declared | 99.2 in · 2,519 mm | 93.5 in · 2,374 mm | +6% 185 |
| Length declared | 158.0 in · 4,013 mm | 150.2 in · 3,814 mm | — |
| Width declared | 76.5 in · 1,943 mm | 73.2–89.0 in · 1,860–2,260 mm | differs |
| Ground clearance declared | 20.5 in · 521 mm | 17.7 in · 450 mm | +16% 185 |
| Turning radius, braked declared | 10.2 ft · 3.12 m | 11.6 ft · 3.55 m | +14% 751 |
| Fuel tank declared | 98.3 qt · 93.0 L | 86.6 qt · 82.0 L | +13% 185 |
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 185 sources
- Source: Traktorenlexikon, “Allis-Chalmers 185”
- Source: Traktorenlexikon, “Allis-Chalmers 180”
Renault 751 sources
- Source: Traktorenlexikon, “Renault 751 R7621”
- Source: Traktorenlexikon, “Fendt Farmer 108 S/SA”