Hey Tom,

do you have any specs on this bird?

Most 60 size pattern aircraft are fine with the usual high quality coreless analog servos (e.g., a Futaba S9001 or better) or digitals in the 50+ oz of torque. I like to use 70+ on elevator and the strongest on rudder but you can also run your system at 6V to speed things up and increase the torque. For ailerons and elevator your mostly looking for fast servos rather than high torque servos. The S9001 isn't particularly fast by today's standards but coreless servos are nice.

It sounds like you have a good control setup. Of course, you want to make sure the linkages are stiff. For the MK setup you might want to install your servo on its side for linear output and run an arrow shaft FG pushrod. I've been debating about using supported outer sleeves even on these pretty stiff pushrods for zero slop. It really depends on how long the shaft is. For ailerons, the turnbuckle pushrods make for a nice linkage and of course, P-P is great on rudder.

Which OS and Hatori pipe will you be using?

David.