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 Zetor 12050
Image not recorded
ZetorModel B
Zetor 12050
Agricultural
- power
- 120 hp
- displacement
- 254 ci
- Cylinders
- 4
- Forward gears
- 24
Allis ChalmersAllis Chalmers D21 Series II
vs
ZetorZetor 12050
How they compare
Headline specs vs. the whole Row Crop
Engine Power
▲ D21 Series II higher · +1 hp (<1%)D21 Series II121 hp
12050120 hp
Median Row Crop Tractor138 hp
D21 Series II is in the 40th percentile; 12050 is in the 39th · 1,206 models
Engine Displacement
▲ D21 Series II higher · +172 ci (+68%)D21 Series II426 ci
12050254 ci
Median Row Crop Tractor391 ci
D21 Series II is in the 72nd percentile; 12050 is in the 18th · 1,409 models
Cylinders
▲ D21 Series II higher · +2 (+50%)D21 Series II6
120504
Median Row Crop Tractor6
D21 Series II is in the 50th percentile; 12050 is in the 17th · 1,417 models
Forward Gears
▲ 12050 higher · +16 (+200%)D21 Series II8
1205024
Median Row Crop Tractor16
D21 Series II is in the 16th percentile; 12050 is in the 81st · 1,200 models
D21 Series II (A)12050 (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers D21 Series II | Zetor 12050 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Zetor | — |
| Model | D21 Series II | 12050 | — |
| Category | Row Crop | Agricultural | — |
Engine
| Spec | Allis Chalmers D21 Series II | Zetor 12050 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Zetor | — |
| Model | 3500 | Not recorded | — |
| Power Output | 121hp | 120hp | ▲ D21 Series II+1 hp · <1% |
| Rated RPM | 2,200RPM | 2,200RPM | Same |
| Cylinders | 6 | 4 | ▲ D21 Series II+2 · +50% |
| Displacement | 426ci | 254ci | ▲ D21 Series II+172 ci · +68% |
| Bore | 4.3in | 4.1in | ▲ D21 Series II+0.2 in · +5% |
| Stroke | 5in | 4.7in | ▲ D21 Series II+0.3 in · +6% |
Transmission
| Spec | Allis Chalmers D21 Series II | Zetor 12050 | Difference |
|---|---|---|---|
| Type | Sliding gear with dry disc clutch | Three-speed power shift | — |
Dimensions & Weight
| Spec | Allis Chalmers D21 Series II | Zetor 12050 | Difference |
|---|---|---|---|
| Length | 160in | 157in | ▲ D21 Series II+3 in · +2% |
| Width | 91.3in | 78in | ▲ D21 Series II+13.3 in · +17% |
| Height | 106in | 106in | Same |
| Operating Weight | 9,502lb | 9,045lb | ▲ D21 Series II+457 lb · +5% |
Hydraulics
| Spec | Allis Chalmers D21 Series II | Zetor 12050 | Difference |
|---|---|---|---|
| System Type | Not recorded | Open center | — |
| Steering Type | Power | Power Steering | — |
Power Take-off (PTO)
| Spec | Allis Chalmers D21 Series II | Zetor 12050 | Difference |
|---|---|---|---|
| Type | Independent | Not recorded | — |
| Speed 1 | 1,000rpm | Not recorded | — |
Hitch & Towing
| Spec | Allis Chalmers D21 Series II | Zetor 12050 | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | Rear Type II/I | — |
| Hitch Category | III/II | Not recorded | — |
| Hitch Position | Rear | Not recorded | — |
Chassis & Drive
| Spec | Allis Chalmers D21 Series II | Zetor 12050 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x4 MFWD 4WD | — |
| Drive Type | 2WD | 4WD | — |
| Steering Type | Power | Power Steering | — |
| Brake Type | Band actuated disc | Not recorded | — |
Electrical
| Spec | Allis Chalmers D21 Series II | Zetor 12050 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers D21 Series II | Zetor 12050 | Difference |
|---|---|---|---|
| Coolant | 7.8gal | Not recorded | — |
Operator Station
| Spec | Allis Chalmers D21 Series II | Zetor 12050 | 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 · 18th percentile (254 ci)
Cylinders
median 6A · 50th percentile (6)B · 17th percentile (4)
Forward Gears
median 16A · 16th percentile (8)B · 81st percentile (24)
Operating Weight
median 12,307 lbA · 28th percentile (9,502 lb)B · 26th percentile (9,045 lb)
A · D21 Series IIB · 12050Median Row Crop Tractor