Allis ChalmersModel A
Allis Chalmers D21 Series II
Row Crop
- power
- 121 hp
- displacement
- 426 ci
- Cylinders
- 6
- Forward gears
- 8
Head to head · Row Crop
Allis Chalmers D21 Series II vs Ursus 1212
Image not recorded
Allis ChalmersAllis Chalmers D21 Series II
vs
UrsusUrsus 1212
How they compare
Headline specs vs. the whole Row Crop
Engine Power
▲ D21 Series II higher · +1 hp (<1%)D21 Series II121 hp
1212120 hp
Median Row Crop Tractor138 hp
D21 Series II is in the 40th percentile; 1212 is in the 39th · 1,206 models
Engine Displacement
▲ D21 Series II higher · +8 ci (+2%)D21 Series II426 ci
1212418 ci
Median Row Crop Tractor391 ci
D21 Series II is in the 72nd percentile; 1212 is in the 71st · 1,409 models
Cylinders
= Effectively tiedD21 Series II6
12126
Median Row Crop Tractor6
D21 Series II is in the 50th percentile; 1212 is in the 50th · 1,417 models
Forward Gears
▲ 1212 higher · +8 (+100%)D21 Series II8
121216
Median Row Crop Tractor16
D21 Series II is in the 16th percentile; 1212 is in the 50th · 1,200 models
D21 Series II (A)1212 (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers D21 Series II | Ursus 1212 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Ursus | — |
| Model | D21 Series II | 1212 | — |
| Category | Row Crop | Row Crop | Same |
Engine
| Spec | Allis Chalmers D21 Series II | Ursus 1212 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Ursus | — |
| Model | 3500 | Not recorded | — |
| Power Output | 121hp | 120hp | ▲ D21 Series II+1 hp · <1% |
| Rated RPM | 2,200RPM | 2,200RPM | Same |
| Cylinders | 6 | 6 | Same |
| Displacement | 426ci | 418ci | ▲ D21 Series II+8 ci · +2% |
| Bore | 4.3in | 4.3in | Same |
| Stroke | 5in | 4.7in | ▲ D21 Series II+0.3 in · +6% |
Transmission
| Spec | Allis Chalmers D21 Series II | Ursus 1212 | Difference |
|---|---|---|---|
| Type | Sliding gear with dry disc clutch | Not recorded | — |
Dimensions & Weight
| Spec | Allis Chalmers D21 Series II | Ursus 1212 | Difference |
|---|---|---|---|
| Length | 160in | 176in | ▲ 1212+16 in · +10% |
| Width | 91.3in | Not recorded | — |
| Height | 106in | 101in | ▲ D21 Series II+5 in · +5% |
| Operating Weight | 9,502lb | 9,746lb | ▲ 1212+244 lb · +3% |
Hydraulics
| Spec | Allis Chalmers D21 Series II | Ursus 1212 | Difference |
|---|---|---|---|
| Steering Type | Power | Hydraulic power | — |
Power Take-off (PTO)
| Spec | Allis Chalmers D21 Series II | Ursus 1212 | Difference |
|---|---|---|---|
| Type | Independent | Not recorded | — |
| Speed 1 | 1,000rpm | Not recorded | — |
Hitch & Towing
| Spec | Allis Chalmers D21 Series II | Ursus 1212 | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Not recorded | — |
| Hitch Category | III/II | Category 3 | — |
| Hitch Position | Rear | Not recorded | — |
Chassis & Drive
| Spec | Allis Chalmers D21 Series II | Ursus 1212 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x2 | — |
| Drive Type | 2WD | 2WD | Same |
| Steering Type | Power | Hydraulic power | — |
| Brake Type | Band actuated disc | Not recorded | — |
Electrical
| Spec | Allis Chalmers D21 Series II | Ursus 1212 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers D21 Series II | Ursus 1212 | Difference |
|---|---|---|---|
| Coolant | 7.8gal | Not recorded | — |
Operator Station
| Spec | Allis Chalmers D21 Series II | Ursus 1212 | Difference |
|---|---|---|---|
| Type | Open | Not recorded | — |
Category context
Both models against the field
Engine Power
median 138 hpA · 40th percentile (121 hp)B · 39th percentile (120 hp)
Engine Displacement
median 391 ciA · 72nd percentile (426 ci)B · 71st percentile (418 ci)
Cylinders
median 6A · 50th percentile (6)B · 50th percentile (6)
Forward Gears
median 16A · 16th percentile (8)B · 50th percentile (16)
Operating Weight
median 12,307 lbA · 28th percentile (9,502 lb)B · 30th percentile (9,746 lb)
A · D21 Series IIB · 1212Median Row Crop Tractor