Join The Wing Panels - GREAT PLANES Super Skybolt Instruction Manual

Join the Wing Panels

❏
1. Trim the covering from the aileron servo lead holes
located on top of the bottom wing panels near the root ribs.
Feed the servo leads up through these holes.
❏
2. Mix up a small batch of epoxy and glue together the two
bottom plywood wing joiner pieces. Wipe away excess
epoxy with a paper towel and denatured alcohol.
❏
3. Make a center mark on the bottom wing joiner and test
fit it into both joiner pockets in the bottom wing panels. Be
sure that the joiner fits all the way into the center mark on
both panels.
Use a bar sander with coarse sandpaper to true the edges
and remove any excess hardened epoxy from the wing
joiner prepared earlier. Without using any glue,
temporarily join the wings with the joiner. Make adjustments
as necessary for a 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 2-1/8" [54 mm], but small
variances are 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.
❏
4. Use 30-minute epoxy to join the two bottom wing
panels together. Apply epoxy to one half of the joiner and
insert it into one of the panels. Coat the other half of the
joiner as well as the two root ribs and slide the panels
together. Wipe away excess epoxy with alcohol and use
masking tape to hold the panels. We used a small clamp to
align the trailing edge as shown in the picture.
10