Revolutionary Duke Engine.
The Duke engine is a four stroke "axial" reciprocating engine. "Axial" because the axis of each cylinder is aligned with the axis of the output/crank shaft.
The most immediately obvious advantages of the Duke Engine are its size and weight when compared to late model conventional internal combustion engine.The current prototype Duke 3-liter engine is up to 19% lighter than those two engines, despite being far from optimized for minimum weight.














