I have followed closely this discussion. I used an IVO on a Ford V6 in my earlier homebuilt and being able to ground adjust for optimizing performance was great.

I have now finished my fuselage and ready for paint. All systems installed and working except brakes. This includes engine fully functioning. IVO has agreed with the recommendation made by some that an ultralight 68"" three blade is a good choice.

Question: Is there a rpm range to be avoided with a Rotax 912 UL with this prop application?? Is this something I need to consider in selecting a prop??

Bud
IV-1200
912. UL