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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; MD107 is in the 29th · 1,206 models
D21 Series I is in the 72nd percentile; MD107 is in the 40th · 1,409 models
D21 Series I is in the 50th percentile; MD107 is in the 31st · 1,417 models
D21 Series I is in the 16th percentile; MD107 is in the 81st · 1,200 models
Full comparison
| Spec | Allis Chalmers D21 Series I | Kubota MD107 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Kubota | — |
| Model | D21 Series I | MD107 | — |
| Category | Row Crop | Utility | — |
| Spec | Allis Chalmers D21 Series I | Kubota MD107 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Kubota | — |
| Model | 3400 | F5802 | — |
| Power Output | 103hp | 106hp | ▲ MD107+3 hp · +3% |
| Rated RPM | 2,200RPM | 2,400RPM | ▲ MD107+200 RPM · +9% |
| Cylinders | 6 | 5 | ▲ D21 Series I+1 · +20% |
| Displacement | 426ci | 356ci | ▲ D21 Series I+70 ci · +20% |
| Bore | 4.3in | 4.3in | Same |
| Stroke | 5in | 4.9in | ▲ D21 Series I+0.1 in · +2% |
| Spec | Allis Chalmers D21 Series I | Kubota MD107 | Difference |
|---|---|---|---|
| Type | Sliding gear with dry disc clutch | Partial Power Shift | — |
| Spec | Allis Chalmers D21 Series I | Kubota MD107 | Difference |
|---|---|---|---|
| Length | 161in | 166in | ▲ MD107+5 in · +3% |
| Width | 91.6in | 80.3in | ▲ D21 Series I+11.3 in · +14% |
| Height | 107in | 106in | ▲ D21 Series I+1 in · <1% |
| Operating Weight | 9,500lb | 8,510lb | ▲ D21 Series I+990 lb · +12% |
| Spec | Allis Chalmers D21 Series I | Kubota MD107 | Difference |
|---|---|---|---|
| Steering Type | Power | Not recorded | — |
| Spec | Allis Chalmers D21 Series I | Kubota MD107 | Difference |
|---|---|---|---|
| Type | Independent | Not recorded | — |
| Speed 1 | 1,000rpm | Not recorded | — |
| Spec | Allis Chalmers D21 Series I | Kubota MD107 | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Not recorded | — |
| Hitch Category | III/II | II | — |
| Hitch Position | Rear | Not recorded | — |
| Spec | Allis Chalmers D21 Series I | Kubota MD107 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x4 MFWD 4WD | — |
| Drive Type | 2WD | MFWD (4WD) | — |
| Steering Type | Power | Not recorded | — |
| Brake Type | Band actuated disc | Not recorded | — |
| Spec | Allis Chalmers D21 Series I | Kubota MD107 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
| Spec | Allis Chalmers D21 Series I | Kubota MD107 | Difference |
|---|---|---|---|
| Coolant | 5.3gal | 3.8gal | ▲ D21 Series I+1.5 gal · +39% |
| Spec | Allis Chalmers D21 Series I | Kubota MD107 | Difference |
|---|---|---|---|
| Type | Open | Not recorded | — |
Category context