I'm currently dealing w/ Autoprop in a new install. I followed the manufacture - distributers rep suggestions and have the following.
is reached at 1300 rpms when the engine max is 2600. At 1400 rpms I receive a HUGE vibration with bending of the shaft.
The prop stops the boat very quickly. Almost on a dime if one can say that about stopping boats.
I have an enclosed area for the prop (full keel
boat) and rudder
I checked w/ Autoprop the diagrams they sent and sized the prop accordingly. The diagrams they sent with the correct prop showed that it fit the opening.
I know of two sisterships boats with Autoprops that don't have this issue so I'm hoping to get this resolved soon.
I liked the Autoprop because at the time I couldn't find any negative comments about them. I like them because there is no mechanical stop. I like them because the auto pitch to current
conditions. I like them because I didn't have to modify the end of the prop for any nuts and can in an emergency
put a fixed prop back on.
I don't like the vibration issue but hope to get that resolved soon.
I do feel they overproped me. I have an 1/14" shaft and the prop they said was best was 21". I believe that is above the ABYC recommended standard.
I believe the issue will be resolved soon and I'll be entirely satisfied with the setup.