RE: Engine for 60 Ultra stick?
I tried a YS .91FZ on mine, too heavy, put my Saito 100 on it for a wjile then needed the 100 on a Kellett AutoGyro so it now has n MDS .68 on it. the balance is perfect with the Saito 100 and the MDS .68. I couldn't put the battery back far enough to balance the YS which weighs 7 OZ more than the Saito 100.