Head to head · Sub-Compact

David Brown 30 vs David Brown 770 Selectamatic

Image not recorded
David BrownModel A

David Brown 30

Sub-Compact

power
34 hp
displacement
165 ci
Cylinders
4
Forward gears
6
Full 30 specs
David BrownDavid Brown 30
vs
David BrownDavid Brown 770 Selectamatic

How they compare

Headline specs vs. the whole Sub-Compact

n = 616–816

Engine Power

▲ 770 Selectamatic higher · +4.3 hp (+13%)
3034 hp
770 Selectamatic38.3 hp
Median Sub-Compact Tractor26.9 hp

30 is in the 62nd percentile; 770 Selectamatic is in the 71st · 816 models

Engine Displacement

▲ 30 higher · +1 ci (<1%)
30165 ci
770 Selectamatic164 ci
Median Sub-Compact Tractor91.4 ci

30 is in the 89th percentile; 770 Selectamatic is in the 88th · 757 models

Cylinders

▲ 30 higher · +1 (+33%)
304
770 Selectamatic3
Median Sub-Compact Tractor3

30 is in the 90th percentile; 770 Selectamatic is in the 50th · 802 models

Forward Gears

▲ 770 Selectamatic higher · +6 (+100%)
306
770 Selectamatic12
Median Sub-Compact Tractor9

30 is in the 18th percentile; 770 Selectamatic is in the 73rd · 616 models

30 (A)770 Selectamatic (B)Median Sub-Compact Tractor

Full comparison

Every spec, side by side

General Information

SpecDavid Brown 30David Brown 770 SelectamaticDifference
ManufacturerDavid BrownDavid BrownSame
Model30770 Selectamatic—
CategorySub-CompactUtility—

Engine

SpecDavid Brown 30David Brown 770 SelectamaticDifference
ManufacturerDavid BrownDavid BrownSame
Model2.7L 4-cylAD3/49—
Power Output34hp38.3hp▲ 770 Selectamatic+4.3 hp · +13%
Rated RPM2,000RPM2,000RPMSame
Cylinders43▲ 30+1 · +33%
Displacement165ci164ci▲ 30+1 ci · <1%
Bore3.6in3.9in▲ 770 Selectamatic+0.3 in · +8%
Stroke4in4inSame

Transmission

SpecDavid Brown 30David Brown 770 SelectamaticDifference
TypeGearGearSame

Dimensions & Weight

SpecDavid Brown 30David Brown 770 SelectamaticDifference
Length117in112in▲ 30+5 in · +4%
WidthNot recorded63.8in—
HeightNot recorded80.3in—
Operating Weight3,900lb3,730lb▲ 30+170 lb · +5%

Hydraulics

SpecDavid Brown 30David Brown 770 SelectamaticDifference
System TypeNot recordedOpen Center—
Steering TypeManualManualSame

Power Take-off (PTO)

SpecDavid Brown 30David Brown 770 SelectamaticDifference
TypeNot recordedLive—
Speed 1Not recorded540rpm—

Tires

SpecDavid Brown 30David Brown 770 SelectamaticDifference
Front Tire SizeNot recorded6.00-16—
Rear Tire SizeNot recorded12.4-28—

Hitch & Towing

SpecDavid Brown 30David Brown 770 SelectamaticDifference
Hitch TypeNot recordedCategory I—
Hitch CategoryNot recordedI—

Chassis & Drive

SpecDavid Brown 30David Brown 770 SelectamaticDifference
Chassis Type4x2 2WD4x2 2WDSame
Drive Type2WD2WDSame
Steering TypeManualManualSame
Brake TypeNot recordedInternal expanding shoe—

Electrical

SpecDavid Brown 30David Brown 770 SelectamaticDifference
Starter TypeNot recordedElectric—

Capacities

SpecDavid Brown 30David Brown 770 SelectamaticDifference
CoolantNot recorded3gal—

Operator Station

SpecDavid Brown 30David Brown 770 SelectamaticDifference
TypeNot recordedOpen Operator Station—

Category context

Both models against the field

Engine Power

median 26.9 hp
A · 62nd percentile (34 hp)B · 71st percentile (38.3 hp)

Engine Displacement

median 91.4 ci
A · 89th percentile (165 ci)B · 88th percentile (164 ci)

Cylinders

median 3
A · 90th percentile (4)B · 50th percentile (3)

Forward Gears

median 9
A · 18th percentile (6)B · 73rd percentile (12)

Operating Weight

median 2,700 lb
A · 76th percentile (3,900 lb)B · 71st percentile (3,730 lb)
A · 30B · 770 SelectamaticMedian Sub-Compact Tractor
Full spec pageDavid Brown 30Full spec pageDavid Brown 770 Selectamatic