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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 Hart-Parr 30
Image not recorded
Hart-ParrModel B
Hart-Parr 30
Utility
- power
- 30 hp
- displacement
- 465 ci
- Cylinders
- 2
- Forward gears
- 2
Allis ChalmersAllis Chalmers D12
vs
Hart-ParrHart-Parr 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
▲ 30 higher · +316 ci (+212%)D12149 ci
30465 ci
Median Row Crop Tractor391 ci
D12 is in the 4th percentile; 30 is in the 81st · 1,409 models
Cylinders
▲ D12 higher · +2 (+100%)D124
302
Median Row Crop Tractor6
D12 is in the 17th percentile; 30 is in the 1st · 1,417 models
Forward Gears
▲ D12 higher · +2 (+100%)D124
302
Median Row Crop Tractor16
D12 is in the 4th percentile; 30 is in the 1st · 1,200 models
D12 (A)30 (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers D12 | Hart-Parr 30 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Hart-Parr | — |
| Model | D12 | 30 | — |
| Category | Row Crop | Utility, Standard Tread | — |
Engine
| Spec | Allis Chalmers D12 | Hart-Parr 30 | Difference |
|---|---|---|---|
| Manufacturer | Allis-Chalmers | Hart-Parr | — |
| Model | Power-Crater | Not recorded | — |
| Power Output | 31hp | 30hp | ▲ D12+1 hp · +3% |
| Rated RPM | 1,650RPM | 750RPM | ▲ D12+900 RPM · +120% |
| Cylinders | 4 | 2 | ▲ D12+2 · +100% |
| Displacement | 149ci | 465ci | ▲ 30+316 ci · +212% |
| Bore | 3.5in | 6.5in | ▲ 30+3 in · +86% |
| Stroke | 3.9in | 7in | ▲ 30+3.1 in · +79% |
Transmission
| Spec | Allis Chalmers D12 | Hart-Parr 30 | Difference |
|---|---|---|---|
| Type | Sliding Gear | Gear | — |
Dimensions & Weight
| Spec | Allis Chalmers D12 | Hart-Parr 30 | Difference |
|---|---|---|---|
| Length | 121in | 141in | ▲ 30+20 in · +17% |
| Width | Not recorded | 76in | — |
| Height | 76.5in | 61in | ▲ D12+15.5 in · +25% |
| Operating Weight | 2,800lb | 5,450lb | ▲ 30+2,650 lb · +95% |
Hydraulics
| Spec | Allis Chalmers D12 | Hart-Parr 30 | Difference |
|---|---|---|---|
| System Type | Live | Not recorded | — |
| Steering Type | Manual | Manual | Same |
Power Take-off (PTO)
| Spec | Allis Chalmers D12 | Hart-Parr 30 | Difference |
|---|---|---|---|
| Type | Rear | Not recorded | — |
| Speed 1 | 540rpm | Not recorded | — |
Hitch & Towing
| Spec | Allis Chalmers D12 | Hart-Parr 30 | Difference |
|---|---|---|---|
| Hitch Type | Snap-Coupler | Not recorded | — |
| Hitch Category | I | Not recorded | — |
| Hitch Position | Rear | Not recorded | — |
Chassis & Drive
| Spec | Allis Chalmers D12 | Hart-Parr 30 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x2 2WD | Same |
| Drive Type | 2WD | 2WD | Same |
| Steering Type | Manual | Manual | Same |
Electrical
| Spec | Allis Chalmers D12 | Hart-Parr 30 | Difference |
|---|---|---|---|
| Starter Type | Electric | Not recorded | — |
Capacities
| Spec | Allis Chalmers D12 | Hart-Parr 30 | Difference |
|---|---|---|---|
| Coolant | 2gal | Not recorded | — |
Operator Station
| Spec | Allis Chalmers D12 | Hart-Parr 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 · 81st percentile (465 ci)
Cylinders
median 6A · 17th percentile (4)B · 1st percentile (2)
Forward Gears
median 16A · 4th percentile (4)B · 1st percentile (2)
Operating Weight
median 12,307 lbA · 2nd percentile (2,800 lb)B · 10th percentile (5,450 lb)
A · D12B · 30Median Row Crop Tractor