7 material differences · fewer than 12
Tractor oneBOLINDER-MUNKTELL BM-311949–1957No measured PTO figureTractor twoJ.I. Case Modell-DC1939–1953No measured PTO figure
Which should you choose?
We will not advise between these two machines, because their unladen weight differs by more than 25% (39%). 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
7 material differences · 2 fields identical or within 5%, which is not counted as material
| Field | BM-31 | Modell-DC | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 34 hp | 33.0 hp | — |
| Engine declared | AB-VOLVO D 4 F | — | — |
| Displacement declared | 3.46 L | — | — |
| Maximum torque declared | 134 lb·ft · 182 N·m | — | — |
| Transmission | |||
| Top speed declared | 18.6 mph · 30 km/h | 10.0 mph · 16.09 km/h | +86% BM-31 |
| Clutch declared | pedal-operated dry single-disc clutch | Hand lever operated Twin Disc plate clutch | differs |
| Hydraulics & hitch | |||
| Pump flow declared | 6.3 gpm · 23.8 L/min | — | — |
| Pressure declared | 1,276 psi · 88 bar | — | — |
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 5,060 lb · 2,295 kg | 7,011 lb · 3,180 kg | +39% Modell-DC |
| Wheelbase declared | 77.2 in · 1,960 mm | 88.9 in · 2,257 mm | +15% Modell-DC |
| Length declared | 122.6 in · 3,115 mm | 134.5 in · 3,416 mm | +10% Modell-DC |
| Width declared | 72.4 in · 1,839 mm | 55.0–91.0 in · 1,397–2,311 mm | differs |
| Ground clearance declared | 16.5 in · 420 mm | — | — |
| Fuel tank declared | 63.4 qt · 60.0 L | 67.9 qt · 64.3 L | +7% Modell-DC |
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.
BOLINDER-MUNKTELL BM-31 sources
- Source: Traktorenlexikon, “Bolinder-Munktell BM 31”
J.I. Case Modell-DC sources
- Source: Traktorenlexikon, “Case DC”