Zündapp was a major German motorcycle manufacturer founded in 1917 in Nuremberg by Fritz Neumeyer, together with the Friedrich Krupp AG and the machine tool manufacturer Thiel under the name 'Zünder- und Apparatebau GmbH.' as a producer of detonators. In 1919, as the demand for weapons parts declined after WWI, Neumeyer became the sole proprietor of the company, and two years later he diversified into the construction of motorcycles. The company briefly embarked into the world of carmaking in the 1950s with the Janus - but it didn't sell well, leaving the company to concentrate on building motorcycles. The company collapsed in 1984.