8
❏
6. Peel the covering from the wing. Glue the wing bolt
plate onto the wing.
❏
7. Choose a spoiler servo arm that has a hole approximately
5/8" [16mm] from the servo spline center. The other arms
can be cut off. Enlarge that hole with a 3/32" [2.4mm] drill
bit. Use a nut to install the 2-56 x 3/8" [9.5mm] screw into
the arm as shown. Temporarily connect the servo to your
radio system. Set up the switch or dial that you plan to use
to operate the spoiler. Use the control to rotate the servo
all the way in the “spoiler up” direction, and then install the
servo arm as shown. This will get you close for having the
spoiler operate correctly. You can fi ne tune the throw and
arm position after it’s been tested.
❏
8. Use sand paper to roughen the underside of the spoiler
servo tray (180 or 220 grit is fi ne). Glue the servo tray with
medium (or thick) CA or epoxy into the center wing section
at the location shown. The tray should be approximately
centered between the servo lead exit hole and the wing rib.
Use a hobby knife or rotary tool to cut away the wood from
the spoiler framework just above the servo tray screw hole.
Remove as little wood as possible.
❏
9. Use CA glue to attach the spoiler control bracket onto
the underside of the spoiler. Take care not to put pressure
in the middle of the bracket when pushing it into the slot in
the spoiler. Your best bet would be to slide the bracket into
place rather than pushing down on it.
