Motorworld’s newspaper № 19
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At the automotive show in Berlin in 1933, the Zündapp Werke, GmbH factory, located in Nuremberg (Germany), presented a new motorcycle series—Series K. The letter “K” in its name was an indication that this motorcycle had a Cardan drivetrain.

Zündapp K 800-W

The Zündapp K 800 was equipped with a 4-cylinder, horizontally-opposed, air-cooled engine (20 h.p. at 4000 rpm), which had a very expertly developed, beautiful design, both externally and internally. First engine modifications had bronze-backed bearings in connecting-rod big ends and PALAS bronze carburetor; the camshaft was chain-driven. The first K 800 machines had engines with 18 h.p. rating. In 1935 the motorcycle was modified. Big ends got needle bearers, the generator is driven by fabroil gear having a rubber damper introduced into the system, but, most importantly, with a new Amal carburetor, the motorcycle capacity reached 20 h.p. rising to 22 h.p. for motorcycle versions that were using an acceleration pump. Also the shape of crankcase cover plates was changed, both for the upper cover and the one closing the carburetor.

Zündapp K 800-W

In 1934 the civilian version of the K-800 was modified for the Wehrmacht. The military version, K 800-W, was especially favored by soldiers, but this model had the following drawback: spark plugs got often fouled due to the undercooling of rear cylinders. The Wehrmacht had in its inventory around 550 K 800 model units. The Zündapp K 800 was and still is the only four-cylinder motorcycle used by the German army.

Zündapp K 800 from «Motorworld by V.Sheynov» collection

During period between 1933 and 1938 the Zündapp Werke, GmbH factory manufactured 7569 K 800 model motorcycles.

Manufacturer Zündapp Werke, GmbH, Nuremberg (Germany)
Years of manufacture 1933 – 1938
Quantity produced, units 7 569
Price 1 550 RМ
Today’s value 10 309,6 $
ENGINE AND TRANSMISSION
Type 4-cylinder, horizontally opposed, air-cooled
Engine capacity, cc 804
Bore and stroke, mm 66 х 66,6
Engine rating 20 h.p. at 4000 rpm
Sparking Magneto, left-side kickstarter arrangement
Carburetor Amal or Pallas 22 mm
Battery 6 V
Clutch Dry, single-plate
Transmission 4-speed
FRAME AND WHEELBASE
Frame type Welded, duplex
Front suspension Parallelogram, with frictional damper
Rear suspension Rigid
Brakes Drum type
Wheel size 3,50 or 4,00 х 19
DIMENSIONS
Length, mm
2 165
Width, mm
   815
Height, mm
   900
Wheelbase, mm
1 405
Ground clearance, mm
   120
Seat height, mm
   720
Mass, kg
   215
Gas tank size, l
     15
Maximum speed, km/h
   110
Range, km
   200