
Allis ChalmersModel A
Allis Chalmers HD21
Agricultural
- power
- 225 hp
- displacement
- 844 ci
- Cylinders
- 6
- Forward gears
- 2
Head to head · Agricultural

Agricultural
Row Crop
How they compare
HD21 is in the 84th percentile; Favorit 924 Vario is in the 85th · 1,028 models
HD21 is in the 96th percentile; Favorit 924 Vario is in the 73rd · 1,083 models
HD21 is in the 74th percentile; Favorit 924 Vario is in the 74th · 1,130 models
HD21 is in the 99th percentile; Favorit 924 Vario is in the 79th · 971 models
Full comparison
| Spec | Allis Chalmers HD21 | Fendt Favorit 924 Vario | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Fendt | — |
| Model | HD21 | Favorit 924 Vario | — |
| Category | Agricultural | Row Crop | — |
| Spec | Allis Chalmers HD21 | Fendt Favorit 924 Vario | Difference |
|---|---|---|---|
| Manufacturer | Allis-Chalmers | MAN | — |
| Power Output | 225hp | 230hp | ▲ Favorit 924 Vario+5 hp · +2% |
| Rated RPM | 1,800RPM | 2,300RPM | ▲ Favorit 924 Vario+500 RPM · +28% |
| Cylinders | 6 | 6 | Same |
| Displacement | 844ci | 419ci | ▲ HD21+425 ci · +101% |
| Bore | 5.3in | 4.3in | ▲ HD21+1 in · +23% |
| Stroke | 6.5in | 4.9in | ▲ HD21+1.6 in · +33% |
| Spec | Allis Chalmers HD21 | Fendt Favorit 924 Vario | Difference |
|---|---|---|---|
| Type | Torque Converter | Continuously Variable Transmission (CVT) | — |
| Spec | Allis Chalmers HD21 | Fendt Favorit 924 Vario | Difference |
|---|---|---|---|
| Length | 198in | 194in | ▲ HD21+4 in · +2% |
| Height | 99in | 122in | ▲ Favorit 924 Vario+23 in · +23% |
| Operating Weight | 45,500lb | 18,058lb | ▲ HD21+27,442 lb · +152% |
| Spec | Allis Chalmers HD21 | Fendt Favorit 924 Vario | Difference |
|---|---|---|---|
| Steering Type | Not recorded | Power | — |
| Spec | Allis Chalmers HD21 | Fendt Favorit 924 Vario | Difference |
|---|---|---|---|
| Chassis Type | Not recorded | 4x4 MFWD 4WD | — |
| Drive Type | Not recorded | 4WD | — |
| Steering Type | Not recorded | Power | — |
| Spec | Allis Chalmers HD21 | Fendt Favorit 924 Vario | Difference |
|---|---|---|---|
| Starter Type | Electric | Not recorded | — |
| Spec | Allis Chalmers HD21 | Fendt Favorit 924 Vario | Difference |
|---|---|---|---|
| Coolant | 20gal | Not recorded | — |
Category context