After the First World War, some German aircraft engineer decided to make a motorcycle. Since their aircrafts had rotary engines where the crankshaft was bolted to the plane and the engine spun around, so when they made the bike the same technique was followed. 5 cylinders spun in the front wheel of the bike called Megola (H) And then they said, "Deutchland Uber Alles"
The 1922 Megola:
