Nice slide gauges.
Using a scrap of paper to change/correct the slide position I could compare some findings with my own actuals on the 66" dia.WD Rans S6-116 and all (max. 80) h.p.
Tip speed at 550 ft/min is a comfortable 50% mach 1 at sea level.
Pitch actual is 14 1/2 deg achieved by trial & eeror., whilst slider suggest 13 1/4, for input 1,940 rpm and 90 mph. [I have to accept that some pundits do recommend 13 1/2 or so.]
Thrust comes out ~100lb for a solo weight of ~725 lb, which appears uncommonly close to the glide ratio ?
Just for fun you know.
mike.