Join The Wing Halves - GREAT PLANES Super Sportster EP ARF Instruction Manual

7. Apply six drops of thin CA to the top and bottom of
each hinge. Do not use CA accelerator. After the CA and
epoxy have fully hardened, test the hinges by pulling on
the ailerons.
8. Now join the other aileron and wing half using the
same procedure.

Join the Wing Halves

1. Use epoxy to glue the two plywood wing joiners
together. Wipe off the excess epoxy with a paper towel
dampened with denatured alcohol. Use clamps to hold the
two joiners together until the epoxy cures.
2. Use a bar sander with coarse sandpaper to true the
edges and remove any excess hardened epoxy from the
wing joiner. Without using any glue, temporarily join the
wings with the joiner. Make adjustments as necessary for a
1" [25.4mm]
good fit. Note: The dihedral angle is factory-set and
determined by the angle of the joiner and the joining ribs on
the ends of the wing halves. However, you may confirm the
dihedral by placing one wing panel flat on the workbench
and measuring the distance between the bottom of the rib
on the end of the other panel and the bench. The distance
should be 1" [25mm], but a small variance is acceptable. If
the wing doesn't fit well or if you can't get close enough to
the dihedral specified, there may be excess glue inside the
wing or irregularities on the joiner. Use coarse sandpaper to
true the edges and bevel the corners of the joiner and/or use
a hobby knife to remove any glue from the joiner openings
in the ribs on the end of the wing halves.
3. Prepare 1/2 oz. of 30-minute epoxy. Working quickly,
thoroughly coat the inside of both wing halves where the
joiner fits and one half of the joiner with epoxy. Making
certain the joiner is upright, insert the coated end into one of
the wing halves. Coat the other end of the joiner and the root
ribs with the remainder of the epoxy. Join the wing halves
tightly, holding them together. Use a paper towel dampened
with denatured alcohol to wipe away the excess epoxy that
comes out of the wing. Tightly hold the wing together with
several strips of masking tape, making certain both halves
are in full contact and the leading and trailing edges are
aligned. Let the wing set until the epoxy has cured.
4. Position the plywood aileron servo tray, centered over
the opening in the top of the wing. Use a fine-tip marker to
trace around the inside and outside of the tray.
8