6 material differences · fewer than 12
Tractor oneGüldner AF 301948–1951No measured PTO figureTractor twoVolvo T-251952–1959No measured PTO figure
Which should you choose?
We will not advise between these two machines, because their unladen weight differs by more than 25% (30%); they were not built in overlapping years (1948–1951; 1952–1959). 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
6 material differences · 6 fields identical or within 5%, which is not counted as material
| Field | AF 30 | T-25 | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 30 hp | 30.6 hp | — |
| Engine declared | Güldner 2F | VOLVO CB-22 | differs |
| Displacement declared | 2.60 L | 2.15 L | +21% AF 30 |
| Maximum torque declared | 110 lb·ft · 150 N·m | — | — |
| Transmission | |||
| Top speed declared | 12.4 mph · 20 km/h | 12.4 mph · 20 km/h | — |
| Clutch declared | Single-plate dry clutch from Fichtel & Sachs | Pedal operated dry BORG & BECK single 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 | 4,497 lb · 2,040 kg | 3,459 lb · 1,569 kg | +30% AF 30 |
| Wheelbase declared | 70.5 in · 1,790 mm | 69.7 in · 1,770 mm | — |
| Length declared | 115.0 in · 2,920 mm | 116.1 in · 2,950 mm | — |
| Width declared | 64.6 in · 1,640 mm | 64.6 in · 1,640 mm | — |
| Ground clearance declared | 13.0 in · 330 mm | 16.5 in · 420 mm | +27% T-25 |
| Fuel tank declared | 44.4 qt · 42 L | 47.6 qt · 45.0 L | +7% T-25 |
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.
Güldner AF 30 sources
- Source: Traktorenlexikon, “Güldner AF 30”
Volvo T-25 sources
- Source: Traktorenlexikon, “Volvo T 25”