Where does this come from? I have heard it for years but never had an issue getting a prop pitched to whatever I wanted.From a practical standpoint, I think that's leaning more towards the "cruise" end of the spectrum. Officially the cruise prop is 58", but that's a LOT of pitch for a 150 on a SC. For typical SC applications, I think you'd like it even better if it was a 54, but if I'm interpreting things correctly it started life as a 60, so it's already maxed out on re-pitching.
Found some pictures of my last visit to the prop shop and the tool used to repitch.
View attachment 44060
View attachment 44061
For what it's worth, I have heard that the reason for the two manufacturers having different re-pitching and repairing limits is because they use different alloys of aluminum. They seem to keep this alloy close to the vest as the following is the best I could do in researching the question.I called American Propeller in Redding CA. this morning, and the tech said Sensenich has a limit of 8" cumulative (as Denny's info indicated) and McCauley has no stated limit.
That prop is for a Cherokee C. The S5 denotes that there is an integral spacer which pushes the prop 1-1/4" away from the crankshaft flange for cowl clearance on the PA-28-160 C. Since it is now a 56" pitch it would be a standard prop if on a stock PA-18-150 in between climb and cruise.
This is Sensenich's prop application chart:
http://www.sensenich.com/wp-content...luminum_Propeller_Applications_1349891787.pdf
With the spacer??FWIW that same prop is also used on at least some C150/150 conversions.
With the spacer??