Head to head · Row Crop

Allis Chalmers D15 Series I vs David Brown 900

Allis Chalmers D15 Series I Tractor
Allis ChalmersModel A

Allis Chalmers D15 Series I

Row Crop

power
40 hp
displacement
149 ci
Cylinders
4
Forward gears
8
Full D15 Series I specs
Image not recorded
David BrownModel B

David Brown 900

Row Crop

power
37.5 hp
displacement
165 ci
Cylinders
4
Forward gears
6
Full 900 specs
Allis ChalmersAllis Chalmers D15 Series I
vs
David BrownDavid Brown 900

How they compare

Headline specs vs. the whole Row Crop

n = 806–1,417

Engine Power

▲ D15 Series I higher · +2.5 hp (+7%)
D15 Series I40 hp
90037.5 hp
Median Row Crop Tractor138 hp

D15 Series I is in the 4th percentile; 900 is in the 3rd · 1,206 models

Engine Displacement

▲ 900 higher · +16 ci (+11%)
D15 Series I149 ci
900165 ci
Median Row Crop Tractor391 ci

D15 Series I is in the 4th percentile; 900 is in the 5th · 1,409 models

Cylinders

= Effectively tied
D15 Series I4
9004
Median Row Crop Tractor6

D15 Series I is in the 17th percentile; 900 is in the 17th · 1,417 models

Forward Gears

▲ D15 Series I higher · +2 (+33%)
D15 Series I8
9006
Median Row Crop Tractor16

D15 Series I is in the 16th percentile; 900 is in the 11th · 1,200 models

D15 Series I (A)900 (B)Median Row Crop Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers D15 Series IDavid Brown 900Difference
ManufacturerAllis ChalmersDavid Brown—
ModelD15 Series I900—
CategoryRow CropRow CropSame

Engine

SpecAllis Chalmers D15 Series IDavid Brown 900Difference
ManufacturerAllis ChalmersDavid Brown—
ModelAllis ChalmersAD4/30H—
Power Output40hp37.5hp▲ D15 Series I+2.5 hp · +7%
Rated RPM2,000RPM2,200RPM▲ 900+200 RPM · +10%
Cylinders44Same
Displacement149ci165ci▲ 900+16 ci · +11%
Bore3.5in3.6in▲ 900+0.1 in · +3%
Stroke3.9in4in▲ 900+0.1 in · +3%

Transmission

SpecAllis Chalmers D15 Series IDavid Brown 900Difference
TypePartial Power ShiftGear type—

Dimensions & Weight

SpecAllis Chalmers D15 Series IDavid Brown 900Difference
Length130in113in▲ D15 Series I+17 in · +15%
Width66.9in65in▲ D15 Series I+1.9 in · +3%
Height79.9in77.8in▲ D15 Series I+2.1 in · +3%
Operating Weight3,990lb4,000lb▲ 900+10 lb · <1%

Hydraulics

SpecAllis Chalmers D15 Series IDavid Brown 900Difference
Steering TypeManualManualSame

Power Take-off (PTO)

SpecAllis Chalmers D15 Series IDavid Brown 900Difference
TypeLiveTransmission or live (optional)—
Speed 1540rpm540rpmSame

Hitch & Towing

SpecAllis Chalmers D15 Series IDavid Brown 900Difference
Hitch TypeSnap-CouplerNot recorded—
Hitch CategoryII/II—
Hitch PositionRearNot recorded—
Hitch CapacityNot recorded1,800lb—

Chassis & Drive

SpecAllis Chalmers D15 Series IDavid Brown 900Difference
Chassis Type4x2 2WD4x2 2WDSame
Drive Type2WD2WDSame
Steering TypeManualManualSame
Brake TypeExpanding shoeMechanical drum—

Electrical

SpecAllis Chalmers D15 Series IDavid Brown 900Difference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers D15 Series IDavid Brown 900Difference
Coolant2.8gal3.5gal▲ 900+0.7 gal · +25%

Operator Station

SpecAllis Chalmers D15 Series IDavid Brown 900Difference
TypeOpenOpen operator station—

Category context

Both models against the field

Engine Power

median 138 hp
A · 4th percentile (40 hp)B · 3rd percentile (37.5 hp)

Engine Displacement

median 391 ci
A · 4th percentile (149 ci)B · 5th percentile (165 ci)

Cylinders

median 6
A · 17th percentile (4)B · 17th percentile (4)

Forward Gears

median 16
A · 16th percentile (8)B · 11th percentile (6)

Operating Weight

median 12,307 lb
A · 5th percentile (3,990 lb)B · 5th percentile (4,000 lb)
A · D15 Series IB · 900Median Row Crop Tractor
Full spec pageAllis Chalmers D15 Series IFull spec pageDavid Brown 900