Don,

Mick used Futaba 148's on his Reaper, but I would not trust them with a turbine jet. I would say any servo with at least 70oz plus of torque would be ok on the Reaper. I used HiTec HS-625MG's with 76oz of torque on my canards and ailerons. I also have my canards mixed in with ailerons so that I get elevons. You basically want to setup the Reaper like a Delta type jet. At slower speeds for landing, sometimes the canards are not enough to keep the nose high, that is why you want elevons. I would also use a separate servo for each canard.

Do a search for "Super Reaper" on RCU and you will find pictures and setups.

JR Gautreaux