Lanz

Lanz HM8

The Lanz HM8 is a farm tractor produced by Lanz from 1923 to 1925 in Mannheim, Baden-Württemberg, Germany. It features a 3.8L single-cylinder liquid-cooled kerosene engine producing 8 hp. The tractor uses a unique 1-speed gear transmission where the engine directly drives the rear axle via a chain, and reverse is achieved by restarting the engine in the opposite rotation. It has two-wheel drive, manual steering, and an open operator station. The tractor weighs 2760 lbs (1251 kg).
Power8 hp
Founded1923 - 1925
ModelHM8

Technical Specifications

Detailed specifications and technical data for Lanz HM8

Power
Engine power8 hp (6.0 kW)
Engine
TypeLanz 3.8L 1-cyl kerosene
Power8 hp (6.0 kW)
Coolingliquid-cooled
Cylinders1-cylinder
Fuel typekerosene
Rated RPM500
Bore/Stroke6.30x7.48 inches (160 x 190 mm)
Displacement233.1 ci (3.8 L)
Dimensions
Weight2760 lbs (1251 kg)
Mechanical
DriveTwo-wheel drive
SteeringManual steering
Operator stationOpen operator station
Production
Built inMannheim, Baden-Württemberg, Germany
ManufacturerLanz
Years produced1923 - 1925
Transmission
Typegear
Gears1 forward and reverse
NotesThe Lanz HM8 did not have transmission in the typical sense. A drive chain from the engine directly powered the rear axle. To move the tractor in reverse the engine would be re-started in the opposite rotation direction.