Originally Posted by
twistman
I don't know what I am doing different, but I have been flying my Goldberg for years with the YS and I have no lead in the tail and my servos are in the center of the plane?? And might add, it will go ballistic and never stop climbing.
Maybe heavier wood or heavy building???
I used a very light Saito 125:
At first I put both elevator servos in the tail, but ended tail heavy.
I changed the servos to the center with pushrods and ended nose heavy.
Had to put some lead in the back... ...about the same weigth as 1 servo.
In my plane an old YS would need both servos in the tail for sure.
I'm flying at the back end of the CG range. Mind that I built it very weight-conscious, no reinforcements and clean glue joints: "your mileage may vary"
Saludos,
Jean Paul