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Allis ChalmersModel A
Allis Chalmers D21 Series I
Row Crop
- power
- 103 hp
- displacement
- 426 ci
- Cylinders
- 6
- Forward gears
- 8
Head to head · Row Crop
Row Crop

Utility
How they compare
D21 Series I is in the 27th percentile; SF1040T is in the 28th · 1,206 models
D21 Series I is in the 72nd percentile; SF1040T is in the 27th · 1,409 models
D21 Series I is in the 50th percentile; SF1040T is in the 17th · 1,417 models
D21 Series I is in the 16th percentile; SF1040T is in the 50th · 1,200 models
Full comparison
| Spec | Allis Chalmers D21 Series I | Shibaura SF1040T | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Shibaura | — |
| Model | D21 Series I | SF1040T | — |
| Category | Row Crop | Utility | — |
| Spec | Allis Chalmers D21 Series I | Shibaura SF1040T | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Shibaura | — |
| Model | 3400 | LER1104T | — |
| Power Output | 103hp | 105hp | ▲ SF1040T+2 hp · +2% |
| Rated RPM | 2,200RPM | 2,200RPM | Same |
| Cylinders | 6 | 4 | ▲ D21 Series I+2 · +50% |
| Displacement | 426ci | 278ci | ▲ D21 Series I+148 ci · +53% |
| Bore | 4.3in | 4.3in | Same |
| Stroke | 5in | 4.7in | ▲ D21 Series I+0.3 in · +6% |
| Spec | Allis Chalmers D21 Series I | Shibaura SF1040T | Difference |
|---|---|---|---|
| Type | Sliding gear with dry disc clutch | Constant mesh | — |
| Spec | Allis Chalmers D21 Series I | Shibaura SF1040T | Difference |
|---|---|---|---|
| Length | 161in | 161in | Same |
| Width | 91.6in | 74in | ▲ D21 Series I+17.6 in · +24% |
| Height | 107in | 108in | ▲ SF1040T+1 in · <1% |
| Operating Weight | 9,500lb | 7,915lb | ▲ D21 Series I+1,585 lb · +20% |
| Spec | Allis Chalmers D21 Series I | Shibaura SF1040T | Difference |
|---|---|---|---|
| System Type | Not recorded | Open center | — |
| Steering Type | Power | Hydrostatic power | — |
| Spec | Allis Chalmers D21 Series I | Shibaura SF1040T | Difference |
|---|---|---|---|
| Type | Independent | Not recorded | — |
| Speed 1 | 1,000rpm | Not recorded | — |
| Spec | Allis Chalmers D21 Series I | Shibaura SF1040T | Difference |
|---|---|---|---|
| Front Tire Size | Not recorded | 12.4-24 | — |
| Rear Tire Size | Not recorded | 18.4-34 | — |
| Spec | Allis Chalmers D21 Series I | Shibaura SF1040T | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Not recorded | — |
| Hitch Category | III/II | II | — |
| Hitch Position | Rear | Not recorded | — |
| Spec | Allis Chalmers D21 Series I | Shibaura SF1040T | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x4 MFWD 4WD | — |
| Drive Type | 2WD | 4WD | — |
| Steering Type | Power | Hydrostatic power | — |
| Brake Type | Band actuated disc | Mechanical wet disc | — |
| Spec | Allis Chalmers D21 Series I | Shibaura SF1040T | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
| Spec | Allis Chalmers D21 Series I | Shibaura SF1040T | Difference |
|---|---|---|---|
| Coolant | 5.3gal | Not recorded | — |
| Spec | Allis Chalmers D21 Series I | Shibaura SF1040T | Difference |
|---|---|---|---|
| Type | Open | Open operator station or two-post ROPS | — |
Category context