Above two pictures provided by Birger Rokne
TECHNICAL INFORMATION
The engine block is a flathead design.
HK : 23.4. (this is the old measures).
Mechanical 4 wheel brakes.
Water-cooled in-line engine.
Dis-placement : 3.4 liters.
Top speed : 110 km/h.
Weight : 950 kg.
Cylinders : 6.
Gears: 3.