Head to head · Row Crop

Allis Chalmers D21 Series II vs Muir-Hill 121

Image not recorded
Muir-HillModel B

Muir-Hill 121

Utility

power
120 hp
displacement
380 ci
Cylinders
6
Forward gears
8
Full 121 specs
Allis ChalmersAllis Chalmers D21 Series II
vs
Muir-HillMuir-Hill 121

How they compare

Headline specs vs. the whole Row Crop

n = 806–1,417

Engine Power

▲ D21 Series II higher · +1 hp (<1%)
D21 Series II121 hp
121120 hp
Median Row Crop Tractor138 hp

D21 Series II is in the 40th percentile; 121 is in the 39th · 1,206 models

Engine Displacement

▲ D21 Series II higher · +46 ci (+12%)
D21 Series II426 ci
121380 ci
Median Row Crop Tractor391 ci

D21 Series II is in the 72nd percentile; 121 is in the 49th · 1,409 models

Cylinders

= Effectively tied
D21 Series II6
1216
Median Row Crop Tractor6

D21 Series II is in the 50th percentile; 121 is in the 50th · 1,417 models

Forward Gears

= Effectively tied
D21 Series II8
1218
Median Row Crop Tractor16

D21 Series II is in the 16th percentile; 121 is in the 16th · 1,200 models

D21 Series II (A)121 (B)Median Row Crop Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers D21 Series IIMuir-Hill 121Difference
ManufacturerAllis ChalmersMuir-Hill—
ModelD21 Series II121—
CategoryRow CropUtility—

Engine

SpecAllis Chalmers D21 Series IIMuir-Hill 121Difference
ManufacturerAllis ChalmersFord—
Model35002715E—
Power Output121hp120hp▲ D21 Series II+1 hp · <1%
Rated RPM2,200RPM2,500RPM▲ 121+300 RPM · +14%
Cylinders66Same
Displacement426ci380ci▲ D21 Series II+46 ci · +12%
Bore4.3in4.2in▲ D21 Series II+0.1 in · +2%
Stroke5in4.5in▲ D21 Series II+0.5 in · +11%

Transmission

SpecAllis Chalmers D21 Series IIMuir-Hill 121Difference
TypeSliding gear with dry disc clutchGear—

Dimensions & Weight

SpecAllis Chalmers D21 Series IIMuir-Hill 121Difference
Length160in156in▲ D21 Series II+4 in · +3%
Width91.3in82in▲ D21 Series II+9.3 in · +11%
Height106inNot recorded—
Operating Weight9,502lb10,700lb▲ 121+1,198 lb · +13%

Hydraulics

SpecAllis Chalmers D21 Series IIMuir-Hill 121Difference
System TypeNot recordedOpen Center—
Steering TypePowerPowerSame

Power Take-off (PTO)

SpecAllis Chalmers D21 Series IIMuir-Hill 121Difference
TypeIndependentNot recorded—
Speed 11,000rpmNot recorded—

Hitch & Towing

SpecAllis Chalmers D21 Series IIMuir-Hill 121Difference
Hitch TypeThree-Point HitchNot recorded—
Hitch CategoryIII/IICategory 3—
Hitch PositionRearNot recorded—

Chassis & Drive

SpecAllis Chalmers D21 Series IIMuir-Hill 121Difference
Chassis Type4x2 2WD4x4 4WD—
Drive Type2WD4WD—
Steering TypePowerPowerSame
Brake TypeBand actuated discNot recorded—

Electrical

SpecAllis Chalmers D21 Series IIMuir-Hill 121Difference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers D21 Series IIMuir-Hill 121Difference
Coolant7.8galNot recorded—

Operator Station

SpecAllis Chalmers D21 Series IIMuir-Hill 121Difference
TypeOpenNot recorded—

Category context

Both models against the field

Engine Power

median 138 hp
A · 40th percentile (121 hp)B · 39th percentile (120 hp)

Engine Displacement

median 391 ci
A · 72nd percentile (426 ci)B · 49th percentile (380 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 · 28th percentile (9,502 lb)B · 37th percentile (10,700 lb)
A · D21 Series IIB · 121Median Row Crop Tractor
Full spec pageAllis Chalmers D21 Series IIFull spec pageMuir-Hill 121