David Brown 990 Implematic vs Steyr 650 (a)
12 material differences
Which should you choose?
We will not advise between these two machines, because the drive differs (2WD; 2WD / 4WD); they were not built in overlapping years (1961–1965; 1971–1977). 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
12 material differences · 3 fields identical or within 5%, which is not counted as material
| Field | 990 Implematic | 650 (a) | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 52.0 hp | 49.3 hp | +5% 990 Implematic |
| Engine declared | DAVID BROWN AD 4/47 A | Steyr WD-408.81 | differs |
| Displacement declared | 3.04 L | 2.05 L | +48% 990 Implematic |
| Maximum torque declared | 141 lb·ft · 191 N·m | 142 lb·ft · 192 N·m | — |
| Transmission | |||
| Top speed declared | 13.7 mph · 22 km/h | 18.6 mph · 30 km/h | +36% 650 (a) |
| Clutch declared | — | Pedal operated dry Fichtel & Sachs double clutch | — |
| Hydraulics & hitch | |||
| Pump flow declared | 6.0 gpm · 22.7 L/min | 9.0 gpm · 34.0 L/min | +50% 650 (a) |
| Pressure declared | — | 2,489 psi · 172 bar | — |
| Three-point lift at ends declared | 1,819 lb · 825 kg | 5,291 lb · 2,400 kg | +191% 650 (a) |
| Rear PTO speeds declared | 540 rpm | 540/1000 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 4,771 lb · 2,164 kg | 4,806 lb · 2,180 kg | — |
| Maximum permissible mass declared | — | 8,818 lb · 4,000 kg | — |
| Wheelbase declared | 76.7–78.7 in · 1,948–1,999 mm | 83.7 in · 2,125 mm | differs |
| Length declared | 118.0–121.0 in · 2,997–3,073 mm | 138.2 in · 3,510 mm | differs |
| Width declared | 64.0 in · 1,626 mm | 66.1 in · 1,678 mm | — |
| Height declared | 56.0 in · 1,422 mm | 84.4 in · 2,145 mm | +51% 650 (a) |
| Ground clearance declared | 20.0 in · 508 mm | 15.7 in · 400 mm | +27% 990 Implematic |
| Turning radius, braked declared | 10.5 ft · 3.20 m | 11.3 ft · 3.43 m | +7% 650 (a) |
| Fuel tank declared | 55.2 qt · 52.2 L | 87.7 qt · 83 L | +59% 650 (a) |
David Brown 990 Implematic sources
Source
- Source: Traktorenlexikon, “David Brown 990 Implematic”
Steyr 650 (a) sources
Source
- Source: Traktorenlexikon, “Steyr 650”