Hi,

Futaba S3151 has torque 43 ounce per inch and that is enough for aileron and elevator on a Curare 60. Weight 1.5 ounce (41 gram) is no problem either. I had, as I wrote, back in the 1970th a Curare 60 and servos with only 28 ounce per inch torque (that wasabout whatmany normal servos back then performed) and it worked fine, even in competion flying.

/Bo