Top Flite TOPA0305 Part 1 - Manual (Page 22)

BUILD THE WING
MAKE THE WING SKINS
AFT WING SKIN CUT-OFF
1. Glue three 3/32" x 3" x 36" balsa sheets
together to make an aft wing skin. Trim a wedge
from the aft wing skin. Glue it back onto the skin as
shown in the sketch.
2. Glue two 3/32" x 3" x 30" (not 36") balsa
sheets together to make the forward outer wing
skin.
Note: You will need a total of four aft wing skins
and five forward wing skins (one of the forward
wing skins will be cut into four pieces to make the
forward inner skins). You can make all the wing
skins now in an assembly line fashion or make
them as needed.
3. After the glue dries, remove the masking tape
and mark the best side of each skin as the top.
Sand the bottoms of both wing skins
so they are
flat (or almost flat). Sand the tops of the skins so
they are flat andsmooth.
PREPARATIONS
1. Unroll the wing plan. Roll it inside out so it will
lie flat. Cut the right wing panel with the center
section from the wing plan. Position it on your flat
building board and cover the plan with wax paper.
Perform steps 2 through 6 if you are installing
retractable landing gear.
Have you purchased your retracts yet? If you
have (or as soon as you do), take the neoprene
air lines out of the package and hang them from
a hook somewhere in your shop letting them
dangle under their own weight. This will get all
the kinks out and make them easier to work with
when it's time to install them.
D 2. Prepare a set of right wing ribs by using
30-minute epoxy to glue the die-cut 1/16"
plywood retract landing gear rib doublers
W4R, W5R and W6R to the die-cut 3/32" balsa
ribs W4, W5 and W6 exactly as shown in the
photo. Make sure the doublers are on the side of
the ribs as shown in the photo and on the right
wing plan.
3. Prepare a set of left wing ribs the same way
but use the photo above to make sure you glue
the doublers to the correct side of the ribs.
- 2 1
-
14. Remove the shaded area of balsa shown in
e previous two photos after the epoxv is fullv
ured.
,
SLOT FOR
SERVO CORDS
\
3/16" HOLES FOR
WING TIP LIGHTS
S FOR
LINES
5. Drill 5/32" holes and cut slots at the
locations suggested in the sketch in both sets of
ribs W2, W3 and W4 for the retract air lines and
servo cords. Make the slots large enough
so the
connectors on the ends of your servo cords will
pass through.
If you will be installing lights in the
wing, drill 3/16" holes through wing ribs W3
through W14 in the approximate location shown
in the sketch. Hint: An appropriate size brass
tube sharpened at one end cuts very clean holes.
Extend lines
well cutout
I-
D 6. Use a ballpoint pen to extend the die-cut
wheel well cutout in both W3 ribs. Cut partway
through the rib along the line so the cutout will be
easier to remove later.
Beech Fact: In 1946 Walter H. Beech
announced his all new, revolutionary, single
engine entry in the postwar market. He named it
the Bonanza, descriptive of an extra value
offered in the way of economy, performance and
pleasure to the owner.