❏ ❏
17. Insert the 2.5 x 25mm steel pin into the brass tube
you installed in the inner flap. Position the inner flap with the
steel pin so that the steel pin is resting on top of the flap.
Draw a line on each side of the steel pin onto the flap.
❏ ❏
18. Drill a 1/8" [3mm] hole into the center of the end of
the flap as you did for the inner flap. Be sure as you drill the
hole that it is parallel to and centered between the lines you
have drawn on the flap.
❏ ❏
19. Locate another 2.5mm x 15mm brass tube. Insert
it half way into the hole you drilled in the end of the 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.
❏ ❏
20. Install the steel pin into the brass tube in the inner
flap. Then slide the flap onto the steel pin extending from 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 flap with six #2 x 3/8"
[9.5mm] screws.
❏ ❏
21. With the flap and inner flap mounted to the wing
you can now see how the flap and inner flap are tied
together by the steel pin and how they will move together
when the flaps are deployed. (If there is any binding
between the inner flap and the flap, you may be able to get
a smoother operation if you put a slight bend in the steel pin.
This should only be necessary if you do not get the hole for
the brass tube in perfect alignment.)
❏ ❏
22. Position the inner end of the aileron 1/4" [6mm]
from the outer end of the flap (refer to the sketch in step 15).
Install the aileron by marking 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 aileron
with six #2 x 3/8" [9.5mm] screws.
9
