Great Planes Ultra Sport 40 Kit - GPMA0410 - Manual (Page 14)

the rib cross-sections on the plan for the desired LE
shape).
34. Mark and cut out a 1/16" slot in W-l just
behind the spars, for the dihedral brace.
build the left wing panel.
35. Now go back and repeat Steps 9 through 34 to
3. Mix up a batch of 30-minute epoxy and push
some into the dihedral brace slots. Smear epoxy on the
spar ends, and on both sides of the 1/16" ply dihedral
brace. Slide the dihedral brace in place, push the wing
panels together and immediately proceed to the next
step.
4. With the wing tips blocked up 1 -inch, carefully
JOIN THE WING PANELS
align the LE and TE of both wing panels at the center and,
while holding them in correct alignment, apply thin CA
glue to "lock" the panels together. Do not apply CA
glue to any area that is already coated with epoxy.
Allow the epoxy to fully harden before disturbing the
wing.
NOTE: Read steps 1 through 4, then make a "dry
run" through these steps before actually
proceeding.
5. Sand the wing joint smooth all around.
1. Lay a piece of waxed paper down at the center of
the wing, place the two wing panels together at the center,
and block up both wing tips 1-inch. Sand the wing
panels at the center so they will fit together without a gap.
INSTALL AILERON TORQUE RODS
1. Roughen the short end of the aileron torque
rods with 100-grit sandpaper, and file the same end to a
wedge shape.
2. Trial fit the 1/16" ply dihedral brace to make
sure it will readily slide into place.
FILE END TO
WEDGE SHAPE
NOTE: 30-minute epoxy is strongly
recommended for the wing joining process.
2. Roughen the surface of the plastic bearing tubes
with 100-grit sandpaper.
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