
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; Agrotron 230 MK3 is in the 85th · 1,028 models
HD21 is in the 96th percentile; Agrotron 230 MK3 is in the 75th · 1,083 models
HD21 is in the 74th percentile; Agrotron 230 MK3 is in the 74th · 1,130 models
HD21 is in the 1st percentile; Agrotron 230 MK3 is in the 96th · 972 models
Full comparison
| Spec | Allis Chalmers HD21 | Deutz-Fahr Agrotron 230 MK3 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Deutz-Fahr | — |
| Model | HD21 | Agrotron 230 MK3 | — |
| Category | Agricultural | Row Crop | — |
| Spec | Allis Chalmers HD21 | Deutz-Fahr Agrotron 230 MK3 | Difference |
|---|---|---|---|
| Manufacturer | Allis-Chalmers | Deutz | — |
| Model | Not recorded | BF6M 1013C | — |
| Power Output | 225hp | 230hp | ▲ Agrotron 230 MK3+5 hp · +2% |
| Rated RPM | 1,800RPM | 2,350RPM | ▲ Agrotron 230 MK3+550 RPM · +31% |
| Cylinders | 6 | 6 | Same |
| Displacement | 844ci | 436ci | ▲ HD21+408 ci · +94% |
| Bore | 5.3in | 4.3in | ▲ HD21+1 in · +23% |
| Stroke | 6.5in | 5.1in | ▲ HD21+1.4 in · +27% |
| Spec | Allis Chalmers HD21 | Deutz-Fahr Agrotron 230 MK3 | Difference |
|---|---|---|---|
| Type | Torque Converter | 4-speed power shift | — |
| Spec | Allis Chalmers HD21 | Deutz-Fahr Agrotron 230 MK3 | Difference |
|---|---|---|---|
| Length | 198in | 202in | ▲ Agrotron 230 MK3+4 in · +2% |
| Height | 99in | 130in | ▲ Agrotron 230 MK3+31 in · +31% |
| Operating Weight | 45,500lb | 19,646lb | ▲ HD21+25,854 lb · +132% |
| Spec | Allis Chalmers HD21 | Deutz-Fahr Agrotron 230 MK3 | Difference |
|---|---|---|---|
| Steering Type | Not recorded | Power | — |
| Spec | Allis Chalmers HD21 | Deutz-Fahr Agrotron 230 MK3 | Difference |
|---|---|---|---|
| Front Tire Size | Not recorded | 18.4-34 | — |
| Rear Tire Size | Not recorded | 20.8-42 | — |
| Spec | Allis Chalmers HD21 | Deutz-Fahr Agrotron 230 MK3 | Difference |
|---|---|---|---|
| Hitch Category | Not recorded | III | — |
| Spec | Allis Chalmers HD21 | Deutz-Fahr Agrotron 230 MK3 | Difference |
|---|---|---|---|
| Chassis Type | Not recorded | 4x4 MFWD 4WD | — |
| Drive Type | Not recorded | 4WD | — |
| Steering Type | Not recorded | Power | — |
| Spec | Allis Chalmers HD21 | Deutz-Fahr Agrotron 230 MK3 | Difference |
|---|---|---|---|
| Starter Type | Electric | Not recorded | — |
| Spec | Allis Chalmers HD21 | Deutz-Fahr Agrotron 230 MK3 | Difference |
|---|---|---|---|
| Coolant | 20gal | Not recorded | — |
Category context