Well, I am gonna just stop hunting for the cause of the vibration and just keep flying until it becomes more clear what the cause is (i.e. if it gets worse/more persistent!). I flew this morning in cool stil air and no vibration. Flew again when hot and bumpy and had one episode when closing throttle slightly as hit surge of air causing plane to gain altitude. Didn't last long as closed then re-opened throttle and no further recurrence. Engine running well otherwise. I tried removing the nose wheel spat a few days ago as this had been annoying me somewhat working itself loose overtime. It is pretty close to the prop and gets a good splattering of bugs on one side so thought it may have been a source of vibration. It seemed to make a difference until today when another episode happened. It could be the prop hitting some resonance but don't have the luxury of trying another prop just now so will box on and fly as normal. Have not tried removing the drip trays as just can't see it making a difference. Again, even on a warm day today the Temps of oil and CHT were in the 80's deg C.
Any progress at your end Kevin?
Paul
