RE: Showtime engine and servos?
Pro2k - my F90 with a YS110 was not over powered, throttle was manageable, I believe that the YS120 turning a 17x6 would be lovely on this ship as you are not a 3D nut. If I had my way I would go with the YS140, saw a F90 with one and the flyer was so pleased. The larger prop gave it more wash and helped in hanging her. Alas, I doubt I am going to get another engine for my Show Time.
Can anyone here who has a YS110 in their plane let me know if the plane came up tail heavy or just right ... thanks!