The Hercules W-2000 was a rotary engine motorcycle equipped with a Sachs, 294cc single rotor, air cooled engine. Unlike the Suzuki RE5, which was water cooled, the Hercules relied on an engine mounted fan up front plus the cooling air from the airflow generated when the bike was in motion. This 1976 model incorporated oil injection lubrication for the engine, while earlier … [Read more...]