Dynaflite DYFA3901 - Manual (Page 20)

Q Q 7. Fit the remaining W-5 through W-11 ribs
in place, perpendicular to the building board. You
may need to bevel the ends of the ribs to match the
angle of the leading and trailing edge. When you
are satisfied with the fit, glue the ribs to the tip spar
and leading and trailing edge.
Q Q 8. Remove the tip panel assembly from your
building board. Leave the root wing panel assembly
in place.
U U 9. Place the tip panel against the root panel
and raise the tip panel 3-3/4" at rib W-11. Notice
that the leading and trailing edges of both panels
do not fit correctly. Carefully sand the leading and
trailing edges of the wing tip panel flush with the
face of rib W-4.
LI Q 10. After checking that both panels fit
together correctly, use aliphatic resin or 30-minute
epoxy to glue the spars, leading and trailing edges
together. Make sure the tip panel is raised 3-3/4" at
rib W-11. Use clamps to hold the spars together
until the epoxy cures.
Q Q 11. After the epoxy cures, remove the wing
half from the building board.
U U 12. Use a razor saw and a sanding block to
trim the spars and leading and trailing edges flush
with the W-1 and W-11 ribs. Be careful to not
remove any of the rib, changing its angle.
Q Q 13. Glue the shaped 5/8" x 15/16" x 5-5/8"
balsa wing tip to rib W-11. Note the wing tip cross
section on the plan for the proper orientation.
I—I Q 14. Trim and sand the wing tip to shape. An
easy procedure to obtain the proper shape is to
cover the leading and trailing edge and ribs W-9
and W-10 with masking tape. Sand the wing tip to
the shape of rib W-11 using a sanding bar, but be
careful not to sand through the masking tape or
ribW-11.
Q Q 15. Locate the 1/8" plywood leading edge
template and clean-up the die-cutting around the
radius, if needed.
Q Q 16. Use the leading edge template and the
wing cross section at W-1 (shown on the fuselage
side view) as a guide while sanding the wing root
panel leading edge. The correct shape of the
leading edge is very important to the flight
characteristics of the Wanderer.
Q Q 17. Note that the tip panel ribs get smaller as
they go from W-4 to W-1 1. Carefully taper the
leading edge to match the front of the wing tip ribs.
Q Q 18. Using the leading edge template as a
general guide, sand a radius on the tip panel
leading edge.
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