9 material differences · fewer than 12
Tractor oneJ.I. Case Modell-S1941–1952No measured PTO figureTractor twoLanz D 65111931–1935No measured PTO figure
Which should you choose?
We will not advise between these two machines, because their unladen weight differs by more than 25% (99%); they were not built in overlapping years (1941–1952; 1931–1935). 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 · 1 fields identical or within 5%, which is not counted as material
| Field | Modell-S | D 6511 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 21.6 hp | 21.6 hp | — |
| Transmission | |||
| Top speed declared | 10.0 mph · 16.1 km/h | 8.3–9.7 mph · 13.4–15.6 km/h | differs |
| Clutch declared | Hand lever operated wet single plate Twin Disc clutch | Three-jaw clutch operated by two pedals with clutch brake | differs |
| Hydraulics & hitch | |||
| Rear PTO speeds declared | 541 rpm | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 4,374 lb · 1,984 kg | 8,708 lb · 3,950 kg | +99% D 6511 |
| Wheelbase declared | 66.0 in · 1,676 mm | 73.4 in · 1,864 mm | +11% D 6511 |
| Length declared | 108.5 in · 2,756 mm | 121.7 in · 3,090 mm | +12% D 6511 |
| Width declared | 56.3 in · 1,429 mm | 75.3 in · 1,912 mm | +34% D 6511 |
| Ground clearance declared | 11.3 in · 286 mm | 9.1 in · 230 mm | +24% Modell-S |
| Fuel tank declared | 56.0 qt · 53.0 L | 63.4 qt · 60 L | +13% D 6511 |
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.
J.I. Case Modell-S sources
- Source: Traktorenlexikon, “Case S”
Lanz D 6511 sources
- Source: Traktorenlexikon, “Lanz D 6511”