Thank you John. After sending that post about measuring propeller pitch, I found a link (provided below) to a propeller pitch calculator. It is set up to calculate pitch from a known radius and blade angle. It could be used to calculate blade angle by putting in your radius and then feeding in values of blade angle until you hit on the correct pitch.
Cheers, Bill John said: Or, you can look it up in the service manual. For a48” pitch, McCauley specifies 17.6* +/- .25* at station 24 and 14.4* +/- .20* at station 30. This is independent of length, though. I said last week: As an example, if we have a 7148 prop we can first calculate the 75% radius point as ½ x 71 inches x 0.75 = 26.6 inches. To calculate blade angle we have 48 inches = (2 pi) (26.6 inches) (Tangent of blade angle in degrees). Solving this equation for blade angle yields 16 degrees http://www.indoornews.com/utilities/pitch_station.php
