.
b. Now is the time to check all of the glue joints and to add glue where necessary.
40.
Pin the left bottom wing plan section to the building board and cover with waxed paper.
41.
Build the left wing panel by repeating steps 31a through 39b.
42
a.
Carefuly block sand the two wing panels until all joints are smooth and even. Use
a large sanding block to avoid sanding any one area to thin.
b.
Block sand the wing root of both panels until the leading edge, spars, trailing edge
and all sheeting are flush with the pre-angled W1-B ribs.
43
a.
Finish cutting the diecut slot in the two W-1B wing ribs for the dihedral brace.
b.
Trial fit the dihedral brace in both bottom wing panels. It is critical that both panels slide all the way on the dihedral brace
and that the two ends of the panels meet without gaps all around the center joint.
c.
Use slow epoxy glue to hold the two bottom wing panels together. First work glue into the slots using a dowel or a wire to
insure that the dihedral brace is locked to the top and bottom spars for the full length of the brace. Coat the root of both
panels and the dihedral brace with a light coat of epoxy and side the panels onto the dihedral brace. Carefully line up the
leading and trailing edges of both panels and pin to prevent shifting or misalignment. Wipe off any excess glue, block up the
panels in a stable position and let the glue cure.
44
a.
Using 1/16"x2"x36" balsa sheets, sheet
the bottom of the center section as
shown on the plans. Let dry.
b.
Cut out the section of the two W-1B ribs
between SBR-2 and the main spar
where the servo will mount.
c.
Using 1/16"x2"x36" balsa sheets, sheet
the top of the center section as shown
on the plans. Let dry.
45
a.
Using the plan as a guide mark the clearance notchs for the arm of the torque rod on the trailing edge of the wing. Cut the
notch to clear the torque rod on both sides of the center joint.
b.
Glue the aileron torque rod assemblies in the two 1/2"x1 1/2"x2-7/16" pre-shaped balsa trailing edge. Be especially careful
not to get any glue in the torque rod tube.
c.
Glue the trailing edge piece and torque rod assemblies to the trailing edge of the wing. Again, be very careful not to get any
glue in the torque rod.
BUILDERS TIP:
3M 77 will make the gluing of
glass tape much easier. Just "fog"
a light coat of cement on one side
of the tape. This will help hold the
tape in place without interferring
with the holding power of the CA.
46
a.
Cut a strip of 1" glass tape long enough to wrap from one side of the servo opening around the wing to the other side of the
sevo opening.
b.
Anchor one end of the glass tape in the servo opening with masking tape. Stretch the tape over the trailing edge of the
wing, across the bottom, around the leading edge and back into the servo opening. Anchor this end of the glass tape with
another piece of masking tape.