❏ ❏
12. On the outboard end of the inner flap draw a line
1-1/4" [31mm] from the trailing edge of the inner flap. On this
line mark the center of the flap and carefully drill a 1/8"
[3mm] hole on this mark into the flap 9/16" [14.3mm],
making sure you are centered in the flap and that the hole is
drilled parallel to the leading edge of the flap.
❏ ❏
13. Locate one of the 3/32" x 9/16" [2.5mm x 15mm]
brass tubes. Insert it half way into the hole you drilled in the
end of the inner flap. Place a small drop of medium CA glue
onto the
outside of the tube. Then press the tube all the way
into the inner flap.
Be sure that CA glue does not get into the
inside of the brass tube.
❏ ❏
14. You are now going to proceed with installation of
the flap and ailerons. Before installing the hinges you need
to take a close look at the bottom of the wing. If you hold the
wing and look across the face of the bottom of the wing at
the trailing edge, you should be able to see the outline of
eight circular wooden mounts. Refer to the above
photograph. (For easy reference we have drawn the circles
onto the covering. This should help you locate each of the
mounts.) These mounts are what you will be screwing the
hinge plates to as we proceed with installing the aileron and
flaps. As you work through the installation of the flap and
aileron be sure that you are screwing into these wood blocks.
❏ ❏
15. Position the inner flap onto the wing. When doing
this the inner flap must line up with the joint where the inner
wing panel and the wing are joined. The center of the hinge
must also be in line with the trailing edge of the wing as
shown in the sketch at step 10. Once you are satisfied with
the position of the inner flap, mark the location for the
mounting screws with a felt-tip marker onto the wing. Drill a
1/16" [1.5mm] hole through each of these marks into the
wing. BE CAREFUL NOT TO DRILL THROUGH THE TOP
OF THE WING! Once you have the holes drilled, install the
inner flap with four #2 x 3/8" [9.5mm] screws.
❏ ❏
16. Temporarily mount the main flap to the wing with a
#2 x 3/8" [9.5mm] screw in the inboard and outboard hinge.
The inside end of the flap must be located 1/8" [3mm] from
the outer end of the inner flap. (Refer to the sketch in
step 15).
8
