Phoenix Model SBD DAUNTLESS Instruction Manual page 5

Instruction Manual
Wing Assembly
*Note* We highly recommend using 30 Minute
Epoxy over faster curing epoxies for several
reasons. First, slower curing epoxy is stronger. It
also providers more working time, allowing the
builder to properly align the parts. Using fast cure
epoxy when joining the wing halves could result in
the glue drying before the wing halves are aligned
properly, causing damage to the wing assembly.
Also, when joining the wing halves, the entire area
of both center ribs need to be joined completely
with no gaps existing. Not following these steps
carefully, may result in failure of the wing center
section during flight.
1) Locate the wing dihedral brace. Using a ruler,
locate it's center and place a mark. Draw
vertical line at the mark just made .
2) Test fit the dihedral brace into each wing half.
The brace should slide in easily up to the
centerline you drew. If it does not, use 220 grit
sandpaper with a sanding block and sand down
the edges and ends of the brace until the proper fit
is obtained.
3) When satisfied with the fit of the dihedral brace
in each wing half, remove the brace .Mix equal
amounts of part A and part B 30 minute epoxy.
Coat all sides of the dihedral brace box and half of
the wing brace with the epoxy. Make sure to cover
the top and bottom as well as the sides. Use
enough epoxy to fill any gaps.
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Center line
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SBD DAUNTLESS
4) Insert the dihedral brace into one wing half up
to the centerline. Wipe off any excess epoxy that
may have squeezed out of the joint using paper
towels.
5) Once the epoxy has cured, trial fit both wing
halves together.The center gribs should fit flush
together with little or no gaps existing. If gaps do
exist, use 220 Grit sandpaper and sand down the
high spots on the root ribs and the wing joiner until
the proper fit is obtainer.
6) To protect the covering from the epoxy used to
glue the wing halves together, carefully apply
masking tape around the edge of the root rip on the
top and bottom of each wing half.
a
7) Mix a generous amount of 30 minute epoxy.
Coat the exposed half of the dihedral brace, the
wing joiner box and both root ribs with epoxy. Slide
the two wing halves together and carefully align
them at the leading and trailing edges. Wipe away
any excess epoxy using paper towels. Use masking
tape wrapped around the center section to hold the
halves in place until the epoxy cures.
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Aluminum
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Joiner
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