RE: Cermark Sukhoi SU-31 "Version 2" ARF opinions
I used Hobbico CS-70mg servos for the tail surfaces and CS-64`s for the ailerons. The throttle is one of the 821s that come with the Spektrum radios.
The CS-70s are metal geared with 106oz of torque.
The CS-64s have 69oz.