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Allis ChalmersModel A
Allis Chalmers D12
Row Crop
- power
- 31 hp
- displacement
- 149 ci
- Cylinders
- 4
- Forward gears
- 4
Head to head · Row Crop
Allis Chalmers D12 vs Unimog 30
Allis ChalmersAllis Chalmers D12
vs
UnimogUnimog 30
How they compare
Headline specs vs. the whole Row Crop
Engine Power
▲ D12 higher · +1 hp (+3%)D1231 hp
3030 hp
Median Row Crop Tractor138 hp
D12 is in the 3rd percentile; 30 is in the 2nd · 1,206 models
Engine Displacement
▲ D12 higher · +41 ci (+38%)D12149 ci
30108 ci
Median Row Crop Tractor391 ci
D12 is in the 4th percentile; 30 is in the 1st · 1,409 models
Cylinders
= Effectively tiedD124
304
Median Row Crop Tractor6
D12 is in the 17th percentile; 30 is in the 17th · 1,417 models
Forward Gears
▲ 30 higher · +4 (+100%)D124
308
Median Row Crop Tractor16
D12 is in the 4th percentile; 30 is in the 16th · 1,200 models
D12 (A)30 (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers D12 | Unimog 30 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Unimog | — |
| Model | D12 | 30 | — |
| Category | Row Crop | Crawler | — |
Engine
| Spec | Allis Chalmers D12 | Unimog 30 | Difference |
|---|---|---|---|
| Manufacturer | Allis-Chalmers | Mercedes-Benz | — |
| Model | Power-Crater | OM636 | — |
| Power Output | 31hp | 30hp | ▲ D12+1 hp · +3% |
| Rated RPM | 1,650RPM | 2,550RPM | ▲ 30+900 RPM · +55% |
| Cylinders | 4 | 4 | Same |
| Displacement | 149ci | 108ci | ▲ D12+41 ci · +38% |
| Bore | 3.5in | 3in | ▲ D12+0.5 in · +17% |
| Stroke | 3.9in | 3.9in | Same |
Transmission
| Spec | Allis Chalmers D12 | Unimog 30 | Difference |
|---|---|---|---|
| Type | Sliding Gear | Manual | — |
Dimensions & Weight
| Spec | Allis Chalmers D12 | Unimog 30 | Difference |
|---|---|---|---|
| Length | 121in | Not recorded | — |
| Height | 76.5in | 81in | ▲ 30+4.5 in · +6% |
| Operating Weight | 2,800lb | 4,900lb | ▲ 30+2,100 lb · +75% |
Hydraulics
| Spec | Allis Chalmers D12 | Unimog 30 | Difference |
|---|---|---|---|
| System Type | Live | Not recorded | — |
| Steering Type | Manual | Not recorded | — |
Power Take-off (PTO)
| Spec | Allis Chalmers D12 | Unimog 30 | Difference |
|---|---|---|---|
| Type | Rear | Not recorded | — |
| Speed 1 | 540rpm | Not recorded | — |
Hitch & Towing
| Spec | Allis Chalmers D12 | Unimog 30 | Difference |
|---|---|---|---|
| Hitch Type | Snap-Coupler | Not recorded | — |
| Hitch Category | I | III | — |
| Hitch Position | Rear | Not recorded | — |
Chassis & Drive
| Spec | Allis Chalmers D12 | Unimog 30 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x4 4WD | — |
| Drive Type | 2WD | 4WD | — |
| Steering Type | Manual | Not recorded | — |
Electrical
| Spec | Allis Chalmers D12 | Unimog 30 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers D12 | Unimog 30 | Difference |
|---|---|---|---|
| Coolant | 2gal | 3.5gal | ▲ 30+1.5 gal · +75% |
Operator Station
| Spec | Allis Chalmers D12 | Unimog 30 | Difference |
|---|---|---|---|
| Type | Open | Not recorded | — |
Category context
Both models against the field
Engine Power
median 138 hpA · 3rd percentile (31 hp)B · 2nd percentile (30 hp)
Engine Displacement
median 391 ciA · 4th percentile (149 ci)B · 1st percentile (108 ci)
Cylinders
median 6A · 17th percentile (4)B · 17th percentile (4)
Forward Gears
median 16A · 4th percentile (4)B · 16th percentile (8)
Operating Weight
median 12,307 lbA · 2nd percentile (2,800 lb)B · 8th percentile (4,900 lb)
A · D12B · 30Median Row Crop Tractor