Dave , John Slade wrote:

"My total blade area is 305 sq inches, pitch is 84. Standard blade area for a

200 HP Cozy is around 230 sq inches. He felt that a reduction of around 40

or 50 in blade area without changing prop length or pitch would give me an

extra 200 static engine rpm while hardly impacting max cruise."

I measured my prop and the total blade area is 420 sq inches and 85 pitch

That's big difference.