ORIGINAL: Malcolm H
Jack,
I forgot to add (and forgive me if this is obvious) that the finpost needs to be deeper into the fin near the bottom than at the top to accomodate the greater radius of the leading edge of the rudder. In the heat of gluing and checking the rudder deflection this can be lost!
Malcolm
Malcolm,
This one I would have missed. One thing though, wouldn't this change the rotational center? If the hinges are pulled in a little as you go down, it seems you are giving a tiny bit of down when you use rudder (no, I am nowhere near skilled enough to notice or care for my flying!), just clarifying in case I interpreted your answer in Madarin Chinese...
;-)
Jack