Design Improvements for the Zenith 601 HDS: Cowl Inlets
The photo shows the small horizontal cooling inlet for the engine
and the inlet for the radiator on the right hand side.
No baffles are used to direct the air around the cylinders, without
any noticeable adverse effect so far.
The duct for the radiator cooling air is rather close to the engine,
but does not touch the engine.
A 2-inch NACA inlet supplies the air for the