DKW REICHSFAHRTMODEL – year 1921
Manufacturer: J. S. Rasmussen AG, Zschopau / Saxony, Germany
At the beginning of c 1919 year, the company Rasmussen from Zschopau hired a well-known constructor, small supporter, air-cooled two-stroke engines – Hugo Ruppego. With this venture, Rasmussen produced 1000 units of engines with displacement 25 cm3, designed for various mechanical toys. Other possibilities of using these engines were also searched for. Soon a more powerful version of the motor was developed, for auxiliary drive of bicycles, making it fall 1919 of the year, the first DKW bikes with an additional motor appeared at the Leipzig Trade Fair. This two-stroke single cylinder engine, located above the rear wheel, it had a displacement 122 cm3. His power 0,74 kW (1 KM) it allowed you to reach speed 30 km/h, of course on a level road. The commercial success was extraordinary – do 1922 years sold 25 000 DKW engines – called the enthusiastically "Das kleine Wunder” (little miracle) - shown in the picture.
Another development was a light motorcycle from the years 1921 — 1922. The first "real” the DKW motorcycle was the Reichsfahrt-modell” with a single cylinder displacement engine 142 cm3. The drive unit is equipped with a Meco carburetor, gaining power 1,1 kW (1,5 KM) at 2500 rpm. The ignition of the mixture was possible thanks to the ignition switch, seated under the engine flywheel. To lubricate the engine, the manufacturer recommended a mixture of oil and gasoline 1:10. The engine was forced-cooled, with a fan. The drive from the engine to the rear wheel was transmitted via a V-belt. Motorcycle, actuated by a foot controller (the so-called. kickstarterem), reached the maximum speed 65 km/h. For the braking of this low curb weight vehicle (40 kg) one brake was enough, acting on the V-belt pulley, mounted on the rear wheel.
Low weight had an impact on the performance of this model and the satisfactory results in sports rivalry. The well-known advertising slogan of the company was a rhyme: „DKW, the little miracle, drive up the mountain, like others down” (in Polish translation: DKW, little miracle, goes up the hill like this, as others slide down).