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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 Ford 640
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Allis ChalmersAllis Chalmers D12
vs
FordFord 640
How they compare
Headline specs vs. the whole Row Crop
Engine Power
= Effectively tiedD1231 hp
64031 hp
Median Row Crop Tractor138 hp
D12 is in the 3rd percentile; 640 is in the 3rd · 1,206 models
Engine Displacement
▲ D12 higher · +15 ci (+11%)D12149 ci
640134 ci
Median Row Crop Tractor391 ci
D12 is in the 4th percentile; 640 is in the 3rd · 1,409 models
Cylinders
= Effectively tiedD124
6404
Median Row Crop Tractor6
D12 is in the 17th percentile; 640 is in the 17th · 1,417 models
Forward Gears
= Effectively tiedD124
6404
Median Row Crop Tractor16
D12 is in the 4th percentile; 640 is in the 4th · 1,200 models
D12 (A)640 (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers D12 | Ford 640 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Ford | — |
| Model | D12 | 640 | — |
| Category | Row Crop | Utility | — |
Engine
| Spec | Allis Chalmers D12 | Ford 640 | Difference |
|---|---|---|---|
| Manufacturer | Allis-Chalmers | Ford | — |
| Model | Power-Crater | EAE Red Tiger | — |
| Power Output | 31hp | 31hp | Same |
| Rated RPM | 1,650RPM | 2,000RPM | ▲ 640+350 RPM · +21% |
| Cylinders | 4 | 4 | Same |
| Displacement | 149ci | 134ci | ▲ D12+15 ci · +11% |
| Bore | 3.5in | 3.4in | ▲ D12+0.1 in · +3% |
| Stroke | 3.9in | 3.6in | ▲ D12+0.3 in · +8% |
Transmission
| Spec | Allis Chalmers D12 | Ford 640 | Difference |
|---|---|---|---|
| Type | Sliding Gear | Unsynchronized gear | — |
Dimensions & Weight
| Spec | Allis Chalmers D12 | Ford 640 | Difference |
|---|---|---|---|
| Length | 121in | 121in | Same |
| Width | Not recorded | 64.6in | — |
| Height | 76.5in | 58.7in | ▲ D12+17.8 in · +30% |
| Operating Weight | 2,800lb | 3,031lb | ▲ 640+231 lb · +8% |
Hydraulics
| Spec | Allis Chalmers D12 | Ford 640 | Difference |
|---|---|---|---|
| System Type | Live | Open Center | — |
| Steering Type | Manual | Manual | Same |
Power Take-off (PTO)
| Spec | Allis Chalmers D12 | Ford 640 | Difference |
|---|---|---|---|
| Type | Rear | Conventional | — |
| Speed 1 | 540rpm | 540rpm | Same |
Hitch & Towing
| Spec | Allis Chalmers D12 | Ford 640 | Difference |
|---|---|---|---|
| Hitch Type | Snap-Coupler | Not recorded | — |
| Hitch Category | I | I | Same |
| Hitch Position | Rear | Rear | Same |
| Hitch Capacity | Not recorded | 1,250lb | — |
Chassis & Drive
| Spec | Allis Chalmers D12 | Ford 640 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x2 2WD | Same |
| Drive Type | 2WD | 2WD | Same |
| Steering Type | Manual | Manual | Same |
| Brake Type | Not recorded | Internal expanding shoes operated by two foot pedals | — |
Electrical
| Spec | Allis Chalmers D12 | Ford 640 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers D12 | Ford 640 | Difference |
|---|---|---|---|
| Coolant | 2gal | 3.8gal | ▲ 640+1.8 gal · +90% |
Operator Station
| Spec | Allis Chalmers D12 | Ford 640 | Difference |
|---|---|---|---|
| Type | Open | Open operator station | — |
Category context
Both models against the field
Engine Power
median 138 hpA · 3rd percentile (31 hp)B · 3rd percentile (31 hp)
Engine Displacement
median 391 ciA · 4th percentile (149 ci)B · 3rd percentile (134 ci)
Cylinders
median 6A · 17th percentile (4)B · 17th percentile (4)
Forward Gears
median 16A · 4th percentile (4)B · 4th percentile (4)
Operating Weight
median 12,307 lbA · 2nd percentile (2,800 lb)B · 2nd percentile (3,031 lb)
A · D12B · 640Median Row Crop Tractor