[Public-List] propeller choice

[Jay Davenport via Public-List]

I am installing a Beta 16 diesel in my Alberg 30. It will run at 3600 rpm, with a 2:1 reduction ratio.
The old Atomic 4 engine spun a 10 x 6 three-bladed prop. I made hull speed at about 2200 rpm direct.
I would appreciate any advice (preferably from experience) on what 3-blade prop size would work best with the Beta. I am considering a 11 x 9. Part of my concern is getting the most effective push from the prop, while avoiding cavitation from excessive prop diameter.
Jay DavenportRevolution, A30 #526