Head to head · Row Crop

Allis Chalmers D21 Series I vs Fendt Farmer 309Ci

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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
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FendtModel B

Fendt Farmer 309Ci

Utility

power
103 hp
displacement
246 ci
Cylinders
4
Forward gears
21
Full Farmer 309Ci specs
Allis ChalmersAllis Chalmers D21 Series I
vs
FendtFendt Farmer 309Ci

How they compare

Headline specs vs. the whole Row Crop

n = 806–1,417

Engine Power

= Effectively tied
D21 Series I103 hp
Farmer 309Ci103 hp
Median Row Crop Tractor138 hp

D21 Series I is in the 27th percentile; Farmer 309Ci is in the 27th · 1,206 models

Engine Displacement

▲ D21 Series I higher · +180 ci (+73%)
D21 Series I426 ci
Farmer 309Ci246 ci
Median Row Crop Tractor391 ci

D21 Series I is in the 72nd percentile; Farmer 309Ci is in the 15th · 1,409 models

Cylinders

▲ D21 Series I higher · +2 (+50%)
D21 Series I6
Farmer 309Ci4
Median Row Crop Tractor6

D21 Series I is in the 50th percentile; Farmer 309Ci is in the 17th · 1,417 models

Forward Gears

▲ Farmer 309Ci higher · +13 (+163%)
D21 Series I8
Farmer 309Ci21
Median Row Crop Tractor16

D21 Series I is in the 16th percentile; Farmer 309Ci is in the 72nd · 1,200 models

D21 Series I (A)Farmer 309Ci (B)Median Row Crop Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers D21 Series IFendt Farmer 309CiDifference
ManufacturerAllis ChalmersFendt—
ModelD21 Series IFarmer 309Ci—
CategoryRow CropUtility—

Engine

SpecAllis Chalmers D21 Series IFendt Farmer 309CiDifference
ManufacturerAllis ChalmersDeutz—
Model3400Not recorded—
Power Output103hp103hpSame
Rated RPM2,200RPM2,300RPM▲ Farmer 309Ci+100 RPM · +5%
Cylinders64▲ D21 Series I+2 · +50%
Displacement426ci246ci▲ D21 Series I+180 ci · +73%
Bore4.3in4in▲ D21 Series I+0.3 in · +7%
Stroke5in5inSame

Transmission

SpecAllis Chalmers D21 Series IFendt Farmer 309CiDifference
TypeSliding gear with dry disc clutchSynchronized shuttle—

Dimensions & Weight

SpecAllis Chalmers D21 Series IFendt Farmer 309CiDifference
Length161in158in▲ D21 Series I+3 in · +2%
Width91.6in84.3in▲ D21 Series I+7.3 in · +9%
Height107in106in▲ D21 Series I+1 in · <1%
Operating Weight9,500lb9,304lb▲ D21 Series I+196 lb · +2%

Hydraulics

SpecAllis Chalmers D21 Series IFendt Farmer 309CiDifference
System TypeNot recordedOpen center—
Steering TypePowerPowerSame

Power Take-off (PTO)

SpecAllis Chalmers D21 Series IFendt Farmer 309CiDifference
TypeIndependentNot recorded—
Speed 11,000rpmNot recorded—

Hitch & Towing

SpecAllis Chalmers D21 Series IFendt Farmer 309CiDifference
Hitch TypeThree-Point HitchThree-Point HitchSame
Hitch CategoryIII/IIIII/IISame
Hitch PositionRearRearSame

Chassis & Drive

SpecAllis Chalmers D21 Series IFendt Farmer 309CiDifference
Chassis Type4x2 2WD4x4 MFWD 4WD—
Drive Type2WD4WD—
Steering TypePowerPowerSame
Brake TypeBand actuated discNot recorded—

Electrical

SpecAllis Chalmers D21 Series IFendt Farmer 309CiDifference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers D21 Series IFendt Farmer 309CiDifference
Coolant5.3galNot recorded—

Operator Station

SpecAllis Chalmers D21 Series IFendt Farmer 309CiDifference
TypeOpenCab—

Category context

Both models against the field

Engine Power

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

Engine Displacement

median 391 ci
A · 72nd percentile (426 ci)B · 15th percentile (246 ci)

Cylinders

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

Forward Gears

median 16
A · 16th percentile (8)B · 72nd percentile (21)

Operating Weight

median 12,307 lb
A · 28th percentile (9,500 lb)B · 27th percentile (9,304 lb)
A · D21 Series IB · Farmer 309CiMedian Row Crop Tractor
Full spec pageAllis Chalmers D21 Series IFull spec pageFendt Farmer 309Ci