Head to head · Row Crop

Allis Chalmers D15 vs David Brown 770 Selectamatic

Image not recorded
Allis ChalmersModel A

Allis Chalmers D15

Row Crop

power
37.4 hp
displacement
149 ci
Cylinders
4
Forward gears
8
Full D15 specs
Allis ChalmersAllis Chalmers D15
vs
David BrownDavid Brown 770 Selectamatic

How they compare

Headline specs vs. the whole Row Crop

n = 806–1,417

Engine Power

▲ 770 Selectamatic higher · +0.9 hp (+2%)
D1537.4 hp
770 Selectamatic38.3 hp
Median Row Crop Tractor138 hp

D15 is in the 3rd percentile; 770 Selectamatic is in the 4th · 1,206 models

Engine Displacement

▲ 770 Selectamatic higher · +15 ci (+10%)
D15149 ci
770 Selectamatic164 ci
Median Row Crop Tractor391 ci

D15 is in the 4th percentile; 770 Selectamatic is in the 5th · 1,409 models

Cylinders

▲ D15 higher · +1 (+33%)
D154
770 Selectamatic3
Median Row Crop Tractor6

D15 is in the 17th percentile; 770 Selectamatic is in the 2nd · 1,417 models

Forward Gears

▲ 770 Selectamatic higher · +4 (+50%)
D158
770 Selectamatic12
Median Row Crop Tractor16

D15 is in the 16th percentile; 770 Selectamatic is in the 27th · 1,200 models

D15 (A)770 Selectamatic (B)Median Row Crop Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers D15David Brown 770 SelectamaticDifference
ManufacturerAllis ChalmersDavid Brown—
ModelD15770 Selectamatic—
CategoryRow CropUtility—

Engine

SpecAllis Chalmers D15David Brown 770 SelectamaticDifference
ManufacturerAllis ChalmersDavid Brown—
ModelNot recordedAD3/49—
Power Output37.4hp38.3hp▲ 770 Selectamatic+0.9 hp · +2%
Rated RPM2,000RPM2,000RPMSame
Cylinders43▲ D15+1 · +33%
Displacement149ci164ci▲ 770 Selectamatic+15 ci · +10%
Bore3.5in3.9in▲ 770 Selectamatic+0.4 in · +11%
Stroke3.9in4in▲ 770 Selectamatic+0.1 in · +3%

Transmission

SpecAllis Chalmers D15David Brown 770 SelectamaticDifference
TypePartial power shiftGear—

Dimensions & Weight

SpecAllis Chalmers D15David Brown 770 SelectamaticDifference
Length130in112in▲ D15+18 in · +16%
Width67in63.8in▲ D15+3.2 in · +5%
Height80.2in80.3in▲ 770 Selectamatic+0.1 in · <1%
Operating Weight4,036lb3,730lb▲ D15+306 lb · +8%

Hydraulics

SpecAllis Chalmers D15David Brown 770 SelectamaticDifference
System TypeNot recordedOpen Center—
Steering TypePower-assistedManual—

Power Take-off (PTO)

SpecAllis Chalmers D15David Brown 770 SelectamaticDifference
TypeNot recordedLive—
Speed 1Not recorded540rpm—

Tires

SpecAllis Chalmers D15David Brown 770 SelectamaticDifference
Front Tire SizeNot recorded6.00-16—
Rear Tire SizeNot recorded12.4-28—

Hitch & Towing

SpecAllis Chalmers D15David Brown 770 SelectamaticDifference
Hitch TypeSnap-CouplerCategory I—
Hitch CategoryII/II—
Hitch PositionRearNot recorded—

Chassis & Drive

SpecAllis Chalmers D15David Brown 770 SelectamaticDifference
Chassis Type4x2 2WD4x2 2WDSame
Drive Type2WD2WDSame
Steering TypePower-assistedManual—
Brake TypeNot recordedInternal expanding shoe—

Electrical

SpecAllis Chalmers D15David Brown 770 SelectamaticDifference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers D15David Brown 770 SelectamaticDifference
Coolant2.8gal3gal▲ 770 Selectamatic+0.2 gal · +7%

Operator Station

SpecAllis Chalmers D15David Brown 770 SelectamaticDifference
TypeOpenOpen Operator Station—

Category context

Both models against the field

Engine Power

median 138 hp
A · 3rd percentile (37.4 hp)B · 4th percentile (38.3 hp)

Engine Displacement

median 391 ci
A · 4th percentile (149 ci)B · 5th percentile (164 ci)

Cylinders

median 6
A · 17th percentile (4)B · 2nd percentile (3)

Forward Gears

median 16
A · 16th percentile (8)B · 27th percentile (12)

Operating Weight

median 12,307 lb
A · 6th percentile (4,036 lb)B · 4th percentile (3,730 lb)
A · D15B · 770 SelectamaticMedian Row Crop Tractor
Full spec pageAllis Chalmers D15Full spec pageDavid Brown 770 Selectamatic