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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
Allis Chalmers D21 Series I vs Kubota M8970
KubotaModel B
Kubota M8970
Utility
- power
- 105 hp
- displacement
- 262 ci
- Cylinders
- 4
- Forward gears
- Not recorded
Allis ChalmersAllis Chalmers D21 Series I
vs
KubotaKubota M8970
How they compare
Headline specs vs. the whole Row Crop
Engine Power
▲ M8970 higher · +2 hp (+2%)D21 Series I103 hp
M8970105 hp
Median Row Crop Tractor138 hp
D21 Series I is in the 27th percentile; M8970 is in the 28th · 1,206 models
Engine Displacement
▲ D21 Series I higher · +164 ci (+63%)D21 Series I426 ci
M8970262 ci
Median Row Crop Tractor391 ci
D21 Series I is in the 72nd percentile; M8970 is in the 19th · 1,409 models
Cylinders
▲ D21 Series I higher · +2 (+50%)D21 Series I6
M89704
Median Row Crop Tractor6
D21 Series I is in the 50th percentile; M8970 is in the 17th · 1,417 models
Operating Weight
▲ D21 Series I higher · +1,784 lb (+23%)D21 Series I9,500 lb
M89707,716 lb
Median Row Crop Tractor12,307 lb
D21 Series I is in the 28th percentile; M8970 is in the 19th · 1,350 models
D21 Series I (A)M8970 (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers D21 Series I | Kubota M8970 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Kubota | — |
| Model | D21 Series I | M8970 | — |
| Category | Row Crop | Utility | — |
Engine
| Spec | Allis Chalmers D21 Series I | Kubota M8970 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Kubota | — |
| Model | 3400 | V4300-T-A | — |
| Power Output | 103hp | 105hp | ▲ M8970+2 hp · +2% |
| Rated RPM | 2,200RPM | 2,400RPM | ▲ M8970+200 RPM · +9% |
| Cylinders | 6 | 4 | ▲ D21 Series I+2 · +50% |
| Displacement | 426ci | 262ci | ▲ D21 Series I+164 ci · +63% |
| Bore | 4.3in | 4.3in | Same |
| Stroke | 5in | 4.5in | ▲ D21 Series I+0.5 in · +11% |
Transmission
| Spec | Allis Chalmers D21 Series I | Kubota M8970 | Difference |
|---|---|---|---|
| Type | Sliding gear with dry disc clutch | Not recorded | — |
Dimensions & Weight
| Spec | Allis Chalmers D21 Series I | Kubota M8970 | Difference |
|---|---|---|---|
| Length | 161in | 160in | ▲ D21 Series I+1 in · <1% |
| Width | 91.6in | 80.7in | ▲ D21 Series I+10.9 in · +14% |
| Height | 107in | 115in | ▲ M8970+8 in · +7% |
| Operating Weight | 9,500lb | 7,716lb | ▲ D21 Series I+1,784 lb · +23% |
Hydraulics
| Spec | Allis Chalmers D21 Series I | Kubota M8970 | Difference |
|---|---|---|---|
| Steering Type | Power | Hydrostatic power | — |
Power Take-off (PTO)
| Spec | Allis Chalmers D21 Series I | Kubota M8970 | Difference |
|---|---|---|---|
| Type | Independent | Not recorded | — |
| Speed 1 | 1,000rpm | Not recorded | — |
Hitch & Towing
| Spec | Allis Chalmers D21 Series I | Kubota M8970 | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Not recorded | — |
| Hitch Category | III/II | II | — |
| Hitch Position | Rear | Rear | Same |
Chassis & Drive
| Spec | Allis Chalmers D21 Series I | Kubota M8970 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x4 MFWD 4WD | — |
| Drive Type | 2WD | 4WD | — |
| Steering Type | Power | Hydrostatic power | — |
| Brake Type | Band actuated disc | Not recorded | — |
Electrical
| Spec | Allis Chalmers D21 Series I | Kubota M8970 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers D21 Series I | Kubota M8970 | Difference |
|---|---|---|---|
| Coolant | 5.3gal | 3.9gal | ▲ D21 Series I+1.4 gal · +36% |
Operator Station
| Spec | Allis Chalmers D21 Series I | Kubota M8970 | Difference |
|---|---|---|---|
| Type | Open | Not recorded | — |
Category context
Both models against the field
Engine Power
median 138 hpA · 27th percentile (103 hp)B · 28th percentile (105 hp)
Engine Displacement
median 391 ciA · 72nd percentile (426 ci)B · 19th percentile (262 ci)
Cylinders
median 6A · 50th percentile (6)B · 17th percentile (4)
Operating Weight
median 12,307 lbA · 28th percentile (9,500 lb)B · 19th percentile (7,716 lb)
Length
median 180 inA · 25th percentile (161 in)B · 25th percentile (160 in)
A · D21 Series IB · M8970Median Row Crop Tractor