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Allis ChalmersModel A
Allis Chalmers D15
Row Crop
- power
- 37.4 hp
- displacement
- 149 ci
- Cylinders
- 4
- Forward gears
- 8
Head to head · Row Crop
Allis Chalmers D15 vs David Brown 900
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David BrownModel B
David Brown 900
Row Crop
- power
- 37.5 hp
- displacement
- 165 ci
- Cylinders
- 4
- Forward gears
- 6
Allis ChalmersAllis Chalmers D15
vs
David BrownDavid Brown 900
How they compare
Headline specs vs. the whole Row Crop
Engine Power
▲ 900 higher · +0.1 hp (<1%)D1537.4 hp
90037.5 hp
Median Row Crop Tractor138 hp
D15 is in the 3rd percentile; 900 is in the 3rd · 1,206 models
Engine Displacement
▲ 900 higher · +16 ci (+11%)D15149 ci
900165 ci
Median Row Crop Tractor391 ci
D15 is in the 4th percentile; 900 is in the 5th · 1,409 models
Cylinders
= Effectively tiedD154
9004
Median Row Crop Tractor6
D15 is in the 17th percentile; 900 is in the 17th · 1,417 models
Forward Gears
▲ D15 higher · +2 (+33%)D158
9006
Median Row Crop Tractor16
D15 is in the 16th percentile; 900 is in the 11th · 1,200 models
D15 (A)900 (B)Median Row Crop Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers D15 | David Brown 900 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | David Brown | — |
| Model | D15 | 900 | — |
| Category | Row Crop | Row Crop | Same |
Engine
| Spec | Allis Chalmers D15 | David Brown 900 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | David Brown | — |
| Model | Not recorded | AD4/30H | — |
| Power Output | 37.4hp | 37.5hp | ▲ 900+0.1 hp · <1% |
| Rated RPM | 2,000RPM | 2,200RPM | ▲ 900+200 RPM · +10% |
| Cylinders | 4 | 4 | Same |
| Displacement | 149ci | 165ci | ▲ 900+16 ci · +11% |
| Bore | 3.5in | 3.6in | ▲ 900+0.1 in · +3% |
| Stroke | 3.9in | 4in | ▲ 900+0.1 in · +3% |
Transmission
| Spec | Allis Chalmers D15 | David Brown 900 | Difference |
|---|---|---|---|
| Type | Partial power shift | Gear type | — |
Dimensions & Weight
| Spec | Allis Chalmers D15 | David Brown 900 | Difference |
|---|---|---|---|
| Length | 130in | 113in | ▲ D15+17 in · +15% |
| Width | 67in | 65in | ▲ D15+2 in · +3% |
| Height | 80.2in | 77.8in | ▲ D15+2.4 in · +3% |
| Operating Weight | 4,036lb | 4,000lb | ▲ D15+36 lb · <1% |
Hydraulics
| Spec | Allis Chalmers D15 | David Brown 900 | Difference |
|---|---|---|---|
| Steering Type | Power-assisted | Manual | — |
Power Take-off (PTO)
| Spec | Allis Chalmers D15 | David Brown 900 | Difference |
|---|---|---|---|
| Type | Not recorded | Transmission or live (optional) | — |
| Speed 1 | Not recorded | 540rpm | — |
Hitch & Towing
| Spec | Allis Chalmers D15 | David Brown 900 | Difference |
|---|---|---|---|
| Hitch Type | Snap-Coupler | Not recorded | — |
| Hitch Category | II/I | I | — |
| Hitch Position | Rear | Not recorded | — |
| Hitch Capacity | Not recorded | 1,800lb | — |
Chassis & Drive
| Spec | Allis Chalmers D15 | David Brown 900 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 2WD | 4x2 2WD | Same |
| Drive Type | 2WD | 2WD | Same |
| Steering Type | Power-assisted | Manual | — |
| Brake Type | Not recorded | Mechanical drum | — |
Electrical
| Spec | Allis Chalmers D15 | David Brown 900 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | Allis Chalmers D15 | David Brown 900 | Difference |
|---|---|---|---|
| Coolant | 2.8gal | 3.5gal | ▲ 900+0.7 gal · +25% |
Operator Station
| Spec | Allis Chalmers D15 | David Brown 900 | Difference |
|---|---|---|---|
| Type | Open | Open operator station | — |
Category context
Both models against the field
Engine Power
median 138 hpA · 3rd percentile (37.4 hp)B · 3rd percentile (37.5 hp)
Engine Displacement
median 391 ciA · 4th percentile (149 ci)B · 5th percentile (165 ci)
Cylinders
median 6A · 17th percentile (4)B · 17th percentile (4)
Forward Gears
median 16A · 16th percentile (8)B · 11th percentile (6)
Operating Weight
median 12,307 lbA · 6th percentile (4,036 lb)B · 5th percentile (4,000 lb)
A · D15B · 900Median Row Crop Tractor