7 material differences · fewer than 12
Tractor oneJohn Deere Model D1923–1953No measured PTO figureTractor twoLanz D 9511from 1934No measured PTO figure
Which should you choose?
Read our verdict on the Model D and the D 9511 → 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 · 1 fields identical or within 5%, which is not counted as material
| Field | Model D | D 9511 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 30.4 hp | 29.5 hp | — |
| Transmission | |||
| Top speed declared | 5.6 mph · 9.0 km/h | 9.9 mph · 15.9 km/h | +77% D 9511 |
| Clutch declared | Hand lever operated dry single plate clutch | Pedal operated three-jaw clutch with clutch brake | differs |
| Hydraulics & hitch | |||
| Rear PTO speeds declared | 525 | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 4,259–8,124 lb · 1,932–3,685 kg | 8,378 lb · 3,800 kg | differs |
| Wheelbase declared | 70.0 in · 1,778 mm | 80.2 in · 2,036 mm | +15% D 9511 |
| Length declared | 109.0–130.0 in · 2,769–3,302 mm | 136.0 in · 3,455 mm | differs |
| Width declared | 55.9–66.1 in · 1,420–1,680 mm | 70.1 in · 1,780 mm | differs |
| Ground clearance declared | — | 10.2 in · 260 mm | — |
| Fuel tank declared | — | 95.1–100.4 qt · 90–95 L | — |
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.
John Deere Model D sources
- Source: Traktorenlexikon, “John Deere Modell D”
Lanz D 9511 sources
- Source: Traktorenlexikon, “Lanz D 9511”