Putting this on a Rascal 168 which if it comes out like others have so far, will be up around the 45+ weight range. I have 28x10 props, but thinking of going to a smaller prop or 3 blade. What is the smallest prop that I can use without causing over rev of the engine? This is the non L version. It will be used for general aerobatics. and I doubt it will be able to hover considering the weight, so a 3D prop isn't needed.

Call DA.......that is what they are there for are these kinds of questions.