RE: H9 60 Size P-47 Thunderbolt-Build & Flying
F shawn68, Is your friend talking real flutter or more like a wiggle of the rear end? Both of the one's at our field wiggle at any speed. Don't know why; short couple or small rudder or both? I have a 15 x 8 three blade on a Saito 125. I fly at 4500' also.