maybe NOT engine vibration, but FLUTTER
hey paul... how is the condition of your flying field... all of our fields that we use are mud pits....
maybe next weekend (if the weather holds... weather.com is saying partly cloudy for sat and sun.) I can take a ride down there.. I also might be able to convince Marc (RCAdmin) too as he has been trying to find a good field to fly a review plane off of that won't dirty the plane too much (not good for review)
let me know.