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Lanz HR4 Bulldog

Lanz HR4 Bulldog tractor
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The Lanz HR4 Bulldog is a standard-tread farm tractor produced by Lanz in Mannheim, Germany from 1928 to 1929. It features a 10.3L single-cylinder liquid-cooled oil engine producing 28 hp, with a 3-speed gear transmission. The tractor is two-wheel drive with manual steering and an open operator station. A total of 180 units were built.
Lanz HR4Lanz HR4 Bulldogfarm tractor28 hp tractor10.3L engine3-speed transmissionstandard-tread tractor
Power-
Founded-
ModelHR4

Technical Specifications

Detailed specifications and technical data for Lanz HR4 Bulldog

Power

Engine:28 hp (20.9 kW)
Drawbar (claimed):22 hp (16.4 kW)

Engine

Make:Lanz
Type:oil
Power:28 hp (20.9 kW)
Cylinders:1-cylinder
Rated RPM:500
Bore/Stroke:8.858x10.24 inches (225 x 260 mm)
Displacement:628.5 ci (10.3 L)
Cooling system:liquid-cooled, thermosyphon

Dimensions

Type:Standard-tread tractor

Mechanical

Drive:Two-wheel drive
Steering:Manual steering
Operator station:Open operator station

Production

Type:Standard-tread tractor
Built in:Mannheim, Baden-Württemberg, Germany
Years made:1928 - 1929
Total built:180

Transmission

Type:gear
Gears:3 forward and 1 reverse

Serial Numbers

Start year:1928
Final serial:75180
Start serial:75001