Wings
Fill the hinge point holes in the flap leading
edge with a generous amount of Aeropoxy.
Insert the flaps and press forward to the point
that you achieve approximately 45 degrees of
throw.
As you did with the Elevator and Rudder
servos, find center and install servo arms in
horizontally opposing locations.
Option: use metal servo arms for this
application. If you do, you will need to use ball
ends as you did for the elevator linkages.
Install servos in wing, using screws. Do not
use rubber mounts or brass eyelets.
Carefully measure the distance to the servo
arm, and mark position on the bottom of the
wing. Double check your calculations, and if
satisfied, drill a small pilot hole at this location.
If located properly, open up a slot for the servo
arm.
Mark the slot location on the flap for the control
horn, using a 90 degree square to insure it is
perpendicular to the hinge line. Line it up with
the servo control arm. If you are using a clevis
on the servo arm rather than a ball link, allow
for some offset of the ball end that will attach
to the control arm.
FB Su-27
Page 11
