Built by Gustav Heinz, who also built the Sirocco, the motorcycles were powered by their own 3 port deflector piston type two-stroke engines of 246, 346 and 496cc. They were raced by Kliwar Zesper and Heinz. Production of bicycles continued after the Russians seized control of the country.
After WWI brothers Josef and Gustav Heinz sold and repaired bicycles and motorcycles in RapotÃn. In 1924 they bought land and established a factory, and by 1928 were producing 100 bicycles annually. They formed an agreement with Puch and imported parts from Austria, with production rising considerably.
During this period the firm invested considerable amounts to ensure the health and security of their employees.
Sources: sterba-bike.cz, Tragatsch p.259, petrovnaddesnou.cz
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