Zündapp K 800 was equipped with a 4-cylinder, horizontally-opposed, air-cooled engine (20 h.p. at 4000 rpm.), which was 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, camshaft was chain-driven. First K 800 machnes had engines with 18 h.p.
In 1935 the motorcycle was modified. Big ends got needle bearers, the generator is driven by fabroil gear, with a rubber damper introduced into the system, but, most importantly, with a new Amal carburetor, the motorcycle capacity reaches 20 h.p. rising to 22 h.p. for motorcycle versions using an acceleration pump. Also the shape of crankcase cover plates was changed, both for the upper cover and the one closing the carburetor.
Army 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 around 550 K 800 model units in its inventory. Zündapp K 800 was and still is the only four-cylinder motorcycle used by the German army.
During period between 1933 and 1938 the Zündapp Werke, GmbH plant 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|
|Clutch||Single dry plate|
|FRAME AND WHEELBASE|
|Frame type||Welded, duplex|
|Front suspension||Parallelogram, with frictional damper|
|Wheel size||3,50 or 4,00 х 19|
|Ground clearance, mm||
|Seat height, mm||
|Gas tank size, l||
|Maximum speed, km/h||