HELA D 39 vs J.I. Case Modell-S
8 material differences · fewer than 12
Which should you choose?
We will not advise between these two machines, because their unladen weight differs by more than 25% (42%); they were not built in overlapping years (1939–1939; 1941–1952). 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
8 material differences · 3 fields identical or within 5%, which is not counted as material
| Field | D 39 | Modell-S | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 21.6 hp | 21.6 hp | — |
| Engine declared | KHD F2M 414 | — | — |
| Displacement declared | 2.20 L | — | — |
| Transmission | |||
| Top speed declared | 12.1 mph · 19.4 km/h | 10.0 mph · 16.1 km/h | +20% D 39 |
| Clutch declared | Single-plate dry clutch by Fichtel & Sachs | Hand lever operated wet single plate Twin Disc clutch | differs |
| Hydraulics & hitch | |||
| Rear PTO speeds declared | 540 rpm | 541 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 3,086 lb · 1,400 kg | 4,374 lb · 1,984 kg | +42% Modell-S |
| Wheelbase declared | 68.9 in · 1,750 mm | 66.0 in · 1,676 mm | — |
| Length declared | 100.8 in · 2,560 mm | 108.5 in · 2,756 mm | +8% Modell-S |
| Width declared | 59.1 in · 1,500 mm | 56.3 in · 1,429 mm | — |
| Height declared | 63.0 in · 1,600 mm | 51.0 in · 1,295 mm | +24% D 39 |
| Ground clearance declared | 10.2 in · 260 mm | 11.3 in · 286 mm | +10% Modell-S |
| Fuel tank declared | 40.2 qt · 38 L | 56.0 qt · 53.0 L | +39% Modell-S |
HELA D 39 sources
Source
- Source: Traktorenlexikon, “HELA D39 (1939)”
- Source: Traktorenlexikon, “Fahr D 22”
J.I. Case Modell-S sources
Source
- Source: Traktorenlexikon, “Case S”