The Inspiration
In 1942, the Imperial Japanese Army Air Service began the hunt for a new fighter.  The Ki-43, although nimble, was seen as to fragile in combat and in need of a stronger punch.  The result was the much more capable Ki-84 Hayate (Gale).  The Allies assigned it the code name of "Frank."

The Frank was built around a direct injected and supercharged 36 liter radial engine.  When tested by the Allies after the war, the Frank was clocked at 422mph.

When that giant radial ran properly, it pumped out gobs of power.

The CAD work coming together.

Model ready to go to the laser cutter.

Although often plagued with reliability problems, the Ki84 was a match for any of its Allied contemporaries.