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Allis ChalmersModel A
Allis Chalmers WD
Row Crop
- power
- 34.6 hp
- displacement
- 201 ci
- Cylinders
- 4
- Forward gears
- 4
Head to head · Row Crop
Allis Chalmers WD vs David Brown 30
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David BrownModel B
David Brown 30
Sub-Compact
- power
- 34 hp
- displacement
- 165 ci
- Cylinders
- 4
- Forward gears
- 6
Allis ChalmersAllis Chalmers WD
vs
David BrownDavid Brown 30
How they compare
Headline specs vs. the whole Row Crop
Engine Power
▲ WD higher · +0.6 hp (+2%)WD34.6 hp
3034 hp
Median Row Crop Tractor138 hp
WD is in the 3rd percentile; 30 is in the 3rd · 1,206 models
Engine Displacement
▲ WD higher · +36 ci (+22%)WD201 ci
30165 ci
Median Row Crop Tractor391 ci
WD is in the 8th percentile; 30 is in the 5th · 1,409 models
Cylinders
= Effectively tiedWD4
304
Median Row Crop Tractor6
WD is in the 17th percentile; 30 is in the 17th · 1,417 models
Forward Gears
▲ 30 higher · +2 (+50%)WD4
306
Median Row Crop Tractor16
WD is in the 4th percentile; 30 is in the 11th · 1,200 models
WD (A)30 (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers WD | David Brown 30 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | David Brown | — |
| Model | WD | 30 | — |
| Category | Row Crop | Sub-Compact | — |
Engine
| Spec | Allis Chalmers WD | David Brown 30 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | David Brown | — |
| Model | Allis Chalmers | 2.7L 4-cyl | — |
| Power Output | 34.6hp | 34hp | ▲ WD+0.6 hp · +2% |
| Rated RPM | 1,659RPM | 2,000RPM | ▲ 30+341 RPM · +21% |
| Cylinders | 4 | 4 | Same |
| Displacement | 201ci | 165ci | ▲ WD+36 ci · +22% |
| Bore | 4in | 3.6in | ▲ WD+0.4 in · +11% |
| Stroke | 4in | 4in | Same |
Transmission
| Spec | Allis Chalmers WD | David Brown 30 | Difference |
|---|---|---|---|
| Type | Non-synchronized Gear | Gear | — |
Dimensions & Weight
| Spec | Allis Chalmers WD | David Brown 30 | Difference |
|---|---|---|---|
| Length | 127in | 117in | ▲ WD+10 in · +9% |
| Height | 81.5in | Not recorded | — |
| Operating Weight | Not recorded | 3,900lb | — |
Hydraulics
| Spec | Allis Chalmers WD | David Brown 30 | Difference |
|---|---|---|---|
| System Type | Open Center | Not recorded | — |
| Steering Type | Manual | Manual | Same |
Power Take-off (PTO)
| Spec | Allis Chalmers WD | David Brown 30 | Difference |
|---|---|---|---|
| Type | Optional Transmission or Live | Not recorded | — |
Hitch & Towing
| Spec | Allis Chalmers WD | David Brown 30 | Difference |
|---|---|---|---|
| Hitch Type | Single Hitch Point | Not recorded | — |
Chassis & Drive
| Spec | Allis Chalmers WD | David Brown 30 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x2 2WD | Same |
| Drive Type | 2WD | 2WD | Same |
| Steering Type | Manual | Manual | Same |
| Brake Type | Manual External Compression Band | Not recorded | — |
Capacities
| Spec | Allis Chalmers WD | David Brown 30 | Difference |
|---|---|---|---|
| Coolant | 3.5gal | Not recorded | — |
Operator Station
| Spec | Allis Chalmers WD | David Brown 30 | Difference |
|---|---|---|---|
| Type | Open | Not recorded | — |
Category context
Both models against the field
Engine Power
median 138 hpA · 3rd percentile (34.6 hp)B · 3rd percentile (34 hp)
Engine Displacement
median 391 ciA · 8th percentile (201 ci)B · 5th percentile (165 ci)
Cylinders
median 6A · 17th percentile (4)B · 17th percentile (4)
Forward Gears
median 16A · 4th percentile (4)B · 11th percentile (6)
Length
median 180 inA · 5th percentile (127 in)B · 2nd percentile (117 in)
A · WDB · 30Median Row Crop Tractor