9 material differences · fewer than 12
Tractor oneALLIS-CHALMERS Modell-WD1948–1953No measured PTO figureTractor twoFord NAA1953–1954No measured PTO figure
Which should you choose?
Read our verdict on the Modell-WD and the NAA → It is generated from the rows below by a fixed, versioned rule set, and names the figure behind every call.
Field by field
9 material differences · 1 fields identical or within 5%, which is not counted as material
| Field | Modell-WD | NAA | Gap |
|---|---|---|---|
| Engine | |||
| Engine power, claimed claimed | 30.2 hp | 30.0 hp | — |
| Transmission | |||
| Top speed declared | 9.9 mph · 16 km/h | 12.4 mph · 20 km/h | +25% NAA |
| Clutch declared | Foot-operated spring-loaded dry Rockford single-disc clutch | — | — |
| Hydraulics & hitch | |||
| Pump flow declared | 1.2 gpm · 4.7 L/min | 2.7–6.0 gpm · 10.2–22.7 L/min | differs |
| Rear PTO speeds declared | 548 rpm | 540 rpm | differs |
| Weight & dimensions | |||
| Unladen weight declared | 3,389 lb · 1,537 kg | 2,842 lb · 1,289 kg | +19% Modell-WD |
| Wheelbase declared | 88.1 in · 2,238 mm | 73.9 in · 1,876 mm | +19% Modell-WD |
| Length declared | 138.6 in · 3,521 mm | 120.7 in · 3,067 mm | +15% Modell-WD |
| Width declared | 56.0 in · 1,422 mm | 64.8–86.0 in · 1,645–2,184 mm | differs |
| Height, over the steering wheel declared | 68.0 in · 1,727 mm | 57.2 in · 1,454 mm | +19% Modell-WD |
| Ground clearance declared | — | 20.9 in · 530 mm | — |
| Turning radius, braked declared | 8.2 ft · 2.50 m | — | — |
| Fuel tank declared | 72.1 qt · 68.2 L | 61.3 qt · 58 L | +18% Modell-WD |
ALLIS-CHALMERS Modell-WD sources
Source
- Source: Traktorenlexikon, “Allis-Chalmers WD”
Ford NAA sources
Source
- Source: Traktorenlexikon, “Ford NAA”