Head to head · Row Crop

Allis Chalmers D19 vs Allis Chalmers D21 Series I

Allis Chalmers D19 Tractor
Allis ChalmersModel A

Allis Chalmers D19

Row Crop

power
74.2 hp
displacement
262 ci
Cylinders
6
Forward gears
8
Full D19 specs
Image not recorded
Allis ChalmersModel B

Allis Chalmers D21 Series I

Row Crop

power
103 hp
displacement
426 ci
Cylinders
6
Forward gears
8
Full D21 Series I specs
Allis ChalmersAllis Chalmers D19
vs
Allis ChalmersAllis Chalmers D21 Series I

How they compare

Headline specs vs. the whole Row Crop

n = 806–1,417

Engine Power

▲ D21 Series I higher · +28.8 hp (+39%)
D1974.2 hp
D21 Series I103 hp
Median Row Crop Tractor138 hp

D19 is in the 11th percentile; D21 Series I is in the 27th · 1,206 models

Engine Displacement

▲ D21 Series I higher · +164 ci (+63%)
D19262 ci
D21 Series I426 ci
Median Row Crop Tractor391 ci

D19 is in the 19th percentile; D21 Series I is in the 72nd · 1,409 models

Cylinders

= Effectively tied
D196
D21 Series I6
Median Row Crop Tractor6

D19 is in the 50th percentile; D21 Series I is in the 50th · 1,417 models

Forward Gears

= Effectively tied
D198
D21 Series I8
Median Row Crop Tractor16

D19 is in the 16th percentile; D21 Series I is in the 16th · 1,200 models

D19 (A)D21 Series I (B)Median Row Crop Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers D19Allis Chalmers D21 Series IDifference
ManufacturerAllis ChalmersAllis ChalmersSame
ModelD19D21 Series I—
CategoryRow CropRow CropSame

Engine

SpecAllis Chalmers D19Allis Chalmers D21 Series IDifference
ManufacturerAllis ChalmersAllis ChalmersSame
ModelAllis Chalmers 4.3L 6-cyl gasoline3400—
Power Output74.2hp103hp▲ D21 Series I+28.8 hp · +39%
Rated RPM2,000RPM2,200RPM▲ D21 Series I+200 RPM · +10%
Cylinders66Same
Displacement262ci426ci▲ D21 Series I+164 ci · +63%
Bore3.6in4.3in▲ D21 Series I+0.7 in · +19%
Stroke4.4in5in▲ D21 Series I+0.6 in · +14%

Transmission

SpecAllis Chalmers D19Allis Chalmers D21 Series IDifference
TypeSliding gearSliding gear with dry disc clutch—

Dimensions & Weight

SpecAllis Chalmers D19Allis Chalmers D21 Series IDifference
Length154in161in▲ D21 Series I+7 in · +5%
Width83.6in91.6in▲ D21 Series I+8 in · +10%
Height89in107in▲ D21 Series I+18 in · +20%
Operating Weight6,650lb9,500lb▲ D21 Series I+2,850 lb · +43%

Hydraulics

SpecAllis Chalmers D19Allis Chalmers D21 Series IDifference
System TypeOpen centerNot recorded—
Steering TypePower assistPower—

Power Take-off (PTO)

SpecAllis Chalmers D19Allis Chalmers D21 Series IDifference
TypeLiveIndependent—
Speed 1540rpm1,000rpm▲ D21 Series I+460 rpm · +85%

Hitch & Towing

SpecAllis Chalmers D19Allis Chalmers D21 Series IDifference
Hitch TypeSnap-Coupler / Three-Point HitchThree-Point Hitch—
Hitch CategoryIIIII/II—
Hitch PositionRearRearSame

Chassis & Drive

SpecAllis Chalmers D19Allis Chalmers D21 Series IDifference
Chassis Type4x2 2WD4x2 2WDSame
Drive Type2WD2WDSame
Steering TypePower assistPower—
Brake TypeDifferential mechanical band and dry discBand actuated disc—

Electrical

SpecAllis Chalmers D19Allis Chalmers D21 Series IDifference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers D19Allis Chalmers D21 Series IDifference
Coolant3.8gal5.3gal▲ D21 Series I+1.5 gal · +39%

Operator Station

SpecAllis Chalmers D19Allis Chalmers D21 Series IDifference
TypeOpen operator stationOpen—

Category context

Both models against the field

Engine Power

median 138 hp
A · 11th percentile (74.2 hp)B · 27th percentile (103 hp)

Engine Displacement

median 391 ci
A · 19th percentile (262 ci)B · 72nd percentile (426 ci)

Cylinders

median 6
A · 50th percentile (6)B · 50th percentile (6)

Forward Gears

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

Operating Weight

median 12,307 lb
A · 14th percentile (6,650 lb)B · 28th percentile (9,500 lb)
A · D19B · D21 Series IMedian Row Crop Tractor
Full spec pageAllis Chalmers D19Full spec pageAllis Chalmers D21 Series I