Head to head · Row Crop

Allis Chalmers D21 Series I vs John Deere 6105D

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Allis ChalmersModel A

Allis Chalmers D21 Series I

Row Crop

power
103 hp
displacement
426 ci
Cylinders
6
Forward gears
8
Full D21 Series I specs
John Deere 6105D Tractor
John DeereModel B

John Deere 6105D

Utility

power
105 hp
displacement
276 ci
Cylinders
4
Forward gears
9
Full 6105D specs
Allis ChalmersAllis Chalmers D21 Series I
vs
John DeereJohn Deere 6105D

How they compare

Headline specs vs. the whole Row Crop

n = 806–1,417

Engine Power

▲ 6105D higher · +2 hp (+2%)
D21 Series I103 hp
6105D105 hp
Median Row Crop Tractor138 hp

D21 Series I is in the 27th percentile; 6105D is in the 28th · 1,206 models

Engine Displacement

▲ D21 Series I higher · +150 ci (+54%)
D21 Series I426 ci
6105D276 ci
Median Row Crop Tractor391 ci

D21 Series I is in the 72nd percentile; 6105D is in the 25th · 1,409 models

Cylinders

▲ D21 Series I higher · +2 (+50%)
D21 Series I6
6105D4
Median Row Crop Tractor6

D21 Series I is in the 50th percentile; 6105D is in the 17th · 1,417 models

Forward Gears

▲ 6105D higher · +1 (+13%)
D21 Series I8
6105D9
Median Row Crop Tractor16

D21 Series I is in the 16th percentile; 6105D is in the 20th · 1,200 models

D21 Series I (A)6105D (B)Median Row Crop Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers D21 Series IJohn Deere 6105DDifference
ManufacturerAllis ChalmersJohn Deere—
ModelD21 Series I6105D—
CategoryRow CropUtility—

Engine

SpecAllis Chalmers D21 Series IJohn Deere 6105DDifference
ManufacturerAllis ChalmersJohn Deere—
Model3400PowerTech PWX—
Power Output103hp105hp▲ 6105D+2 hp · +2%
Rated RPM2,200RPM2,200RPMSame
Cylinders64▲ D21 Series I+2 · +50%
Displacement426ci276ci▲ D21 Series I+150 ci · +54%
Bore4.3in4.2in▲ D21 Series I+0.1 in · +2%
Stroke5in5inSame

Transmission

SpecAllis Chalmers D21 Series IJohn Deere 6105DDifference
TypeSliding gear with dry disc clutchSelective gear fixed ratio—

Dimensions & Weight

SpecAllis Chalmers D21 Series IJohn Deere 6105DDifference
Length161in166in▲ 6105D+5 in · +3%
Width91.6in96.5in▲ 6105D+4.9 in · +5%
Height107in108in▲ 6105D+1 in · <1%
Operating Weight9,500lb9,935lb▲ 6105D+435 lb · +5%

Hydraulics

SpecAllis Chalmers D21 Series IJohn Deere 6105DDifference
System TypeNot recordedOpen center—
Steering TypePowerPowerSame

Power Take-off (PTO)

SpecAllis Chalmers D21 Series IJohn Deere 6105DDifference
TypeIndependentIndependentSame
Speed 11,000rpm540rpm▲ D21 Series I+460 rpm · +85%
Speed 2Not recorded1,000rpm—

Hitch & Towing

SpecAllis Chalmers D21 Series IJohn Deere 6105DDifference
Hitch TypeThree-Point HitchThree-point hitchSame
Hitch CategoryIII/IIII—
Hitch PositionRearRearSame
Hitch CapacityNot recorded7,300lb—

Chassis & Drive

SpecAllis Chalmers D21 Series IJohn Deere 6105DDifference
Chassis Type4x2 2WD4x4 MFWD 4WD—
Drive Type2WD4WD—
Steering TypePowerPowerSame
Brake TypeBand actuated discWet disc operated by two foot pedals—

Electrical

SpecAllis Chalmers D21 Series IJohn Deere 6105DDifference
Battery VoltageNot recorded12V—
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers D21 Series IJohn Deere 6105DDifference
Coolant5.3gal4.7gal▲ D21 Series I+0.6 gal · +13%

Operator Station

SpecAllis Chalmers D21 Series IJohn Deere 6105DDifference
TypeOpenTwo-post foldable ROPS—

Category context

Both models against the field

Engine Power

median 138 hp
A · 27th percentile (103 hp)B · 28th percentile (105 hp)

Engine Displacement

median 391 ci
A · 72nd percentile (426 ci)B · 25th percentile (276 ci)

Cylinders

median 6
A · 50th percentile (6)B · 17th percentile (4)

Forward Gears

median 16
A · 16th percentile (8)B · 20th percentile (9)

Operating Weight

median 12,307 lb
A · 28th percentile (9,500 lb)B · 31st percentile (9,935 lb)
A · D21 Series IB · 6105DMedian Row Crop Tractor
Full spec pageAllis Chalmers D21 Series IFull spec pageJohn Deere 6105D