8 material differences · fewer than 12
Tractor oneBrandenburger Traktorenwerke RS03 („Aktivist“)1949–1952No measured PTO figureTractor twoMAN 4K11959–1961No measured PTO figure
Which should you choose?
We will not advise between these two machines, because their unladen weight differs by more than 25% (45%); the drive differs (2WD; 4WD); they were not built in overlapping years (1949–1952; 1959–1961). 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 · 2 fields identical or within 5%, which is not counted as material
| Field | RS03 („Aktivist“) | 4K1 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 29.58 hp | 17.7 hp | +67% RS03 („Aktivist“) |
| Engine declared | Brandenburger Traktorenwerk 16 V 2 | MAN/Güldner D 8515 M 172 | differs |
| Displacement declared | 3.33 L | 1.30 L | +155% RS03 („Aktivist“) |
| Maximum torque declared | — | 54 lb·ft · 74 N·m | — |
| Transmission | |||
| Top speed declared | 11.2 mph · 18 km/h | 15.5 mph · 25 km/h | +39% 4K1 |
| Clutch declared | Single-plate dry clutch | Single plate dry clutch from Fichtel & Sachs | differs |
| Hydraulics & hitch | |||
| Rear PTO speeds declared | 540 rpm | 540 rpm | — |
| Weight & dimensions | |||
| Unladen weight declared | 4,960 lb · 2,250 kg | 3,417 lb · 1,550 kg | +45% RS03 („Aktivist“) |
| Wheelbase declared | 65.0 in · 1,650 mm | 68.9 in · 1,750 mm | +6% 4K1 |
| Length declared | 105.7 in · 2,685 mm | 111.0 in · 2,820 mm | — |
| Width declared | 64.2 in · 1,630 mm | 57.5 in · 1,460 mm | +12% RS03 („Aktivist“) |
| Ground clearance declared | 11.4 in · 290 mm | 15.7 in · 400 mm | +38% 4K1 |
| Turning radius, braked declared | — | 8.5 ft · 2.60 m | — |
| Fuel tank declared | — | 26.4 qt · 25 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.
Brandenburger Traktorenwerke RS03 („Aktivist“) sources
- Source: Traktorenlexikon, “Brandenburger Traktorenwerke RS 03/30”
MAN 4K1 sources
- Source: Traktorenlexikon, “MAN 4K1”
- Source: Traktorenlexikon, “MAN 2K1”