Which engine to use for the Hangar9 Showtime 4-D 90
I'm trying to decide which engine to put in the Hangar9 Showtime 4-D 90 plane i'm currently building. I've narrowed my choices down to 2 engines. The FA-100 or the 125 Black Knight. Both of which are Saito's. My concerns are either being under powered or over powered. Anyone have any experience with either of these engines used in the Showtime plane?