I just love the technology that allows us to see this stuff - thanks for the effort it took to put it up.
What you did allows me to say that my oscillation was not a blurr type buzz like yours. My SIO (I am now calling it Servo Induced Oscillation), was much greater than you illustrated.
The rudder on mine moved violently at leat two inches in both directions and the plane was jumping in the stand and was moving the whole thing across the bench. It did it with 5 different digital servos including an 8611.
Having reiterated on the SIO, I wanted to add that I do not dissagree the thinking around the other failures. It could could simply be structural! Fuselage folding is not new on many of the FG versions of the past. Fin-seam spliting is also not that uncommon.
The beauty of this forum is that we can warn others and advise on preventative "medicine". If one idea saves one plane we did a good thing.
Regards,
Eric.
P.S. Flew the "Yeller-Peril" version 8 times today. It liked the reduced wing incidence and is now flying with 1% up mix from the right rudder and 2% up mix from the left rudder to get killer knife-edges. down lines very good. Added 2% right rudder mix at full throttle for the up-line.
Don't see the need to do much else except learn to do the 3 roll circle :-)
Eric.
ORIGINAL: byoung466
Eric had discussed his rudder oscillation thought I would post some vids of my rudder oscillation the last 3 planes Ive had have done this, the previous two I built a structure to bind the cables:
Well...trying to find a better spot for them....but they will be here under Rudder Dance 1 and 2 when available:
http://www.geocities.com/b.young8070...t/hobbies.html
I havent built a lightened rudder yet, my Impact rudder was 70grams out of the box. Previous planes were a convential foam core rudder. I tightened the cables on this one and the oscillation reduced but could still be set into continuos motion. Then I moved the subtrim off center and retrim with the tab and the oscillation would not continue.