Top Flite TOPA0130 - Manual (Page 25)

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15. Remove balsa from the LE to a depth of
about 1/16" at the point where the Center
Fairing fits against it.
❏
16. Hold the Center Fairing in position, then
trace around the perimeter with a pen. Cut away
the excess balsa, then check the Center Fairing
for fit.
❏
17. Glue the center panel balsa skin to the
ribs and spar with Thick or Medium CA.
❏
18. Using the plans as a guide, cut the
opening in the top of the wing sheeting for the
aileron servo. Hint:
Make a small opening to
start with, then work outward until the correct
size is reached.
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19. If you will be installing retracts, drill a 1/2"
hole through the top of the Center Fairing
roughly 3/4" forward of the spar, centered
between the W-1 ribs. This hole will allow
passage of the retract air tubes.
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20. Roughen the inside of the plastic Center
Fairing with coarse sandpaper, then glue it in
position with Medium CA.
At this point you should have the main wing
structure fully sheeted. You may now remove all
Jig par ts from the wing and sand off any
glue marks.
WING COMPLETION
❏
1. Mark and cut 1/4" clearance holes for the
wing bolts from the bottom, through the top wing
skin. Hint:
A 1/4" drill bit will do the job but it
may tear up the sheeting as it exits. A round file
or Moto-Tool with a small cutting tip will do a
neater job.
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2. Trim the sheeting where it protrudes
past the edge of the structure.
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3. Razor plane and sand the wing
Leading Edge until it blends well with the
sheeting to form a smooth airfoil. Final sanding
of the LE near the tip should be done after the
tip block has been installed.
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4. Square off the tip of the wing with a T-bar.
Before attaching the Wing Tip Blocks you need
to insert die-cut 1/16" ply Reinforcement pieces
into the TE of each tip. Do this as follows:
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5. Tack glue the shaped 1" balsa Wing
Tip to the tip of the wing as shown on the plans.
The bottom of the Wing Tip must be flush with
the bottom of the wing, aft of the spar. Place a
ruler on the top of the wing and extend it back to
the TE of the Wing Tip. Draw a line to match the
airfoil as shown in the photo. Repeat for the
other Wing Tip.
❏ ❏
6. Remove the Wing Tips. Draw a line
from the center point of the airfoil height to
the center of the TE.
❏ ❏
7. Transfer these lines to the outside
edge of the Wing Tip. A piece of masking tape
can act as a straightedge to help draw the line
around the curve.
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