Metalurgia Casal was the largest Portuguese motorcycle manufacturer, based in Aveiro. It was founded in 1964 with João Casal as the managing director and Robert Zipprich and other ex-Zundapp engineers as the technical managers. Its first products included agricultural machinery and two strokes' moped engines based on Zundapp ones. By 1967 it was producing complete motorcycles, the first one being a scooter, the S170 Carina - a copy of the Zundapp R50 - with a 50cc and 4 speed engine. Shortly after it rolled out its first mopeds, the K160, K161, K162 and K163 with two speeds, and the K181 with four speeds. Although most of its production were mopeds, it also produced 125cc bikes, namely the K260, K270 and K276 all, and it had an advanced plan for a 250cc, the K280. Its range included some 3