I looked at this at Oshkosh and it's very impressive. I'm interested in knowing the outcome of the prop issue you experienced with the airmaster. Have you considered a four blade prop to gain the extra surface area you where referring to in previous post? How are you controlling boost. I have so many questions but I will leave them for another time. Thanks for your work paving the path less followed.
Building RV9A Fuselage/Finish Kit