Great Planes Spectra Electric Sailplane Kit - GPMA0540 - Manual (Page 16)

outer panels using thick CA as shown in the photo. A little
sanding may be necessary to achieve a good fit.
D 9. Now go back to step 1 and assemble the other half of
the wing.
FINAL WING ASSEMBLY
IF YOU ARE BUILDING A ONE-PIECE WING SKIP |
AHEAD TO STEP 4 |
You'll need the following parts:
Aluminum wing joiner blade, 1/8" ply joiner and two
1/16" ply joiners.
to the aluminum joiner blade. Glue the 1/8" ply joiner and the
other 1/16" ply joiner to the aluminum joiner blade (refer to
the sketch at step 1) using the same procedure. Apply as much
pressure (clamps, clothespins, weights, etc.) as possible while
the glue is curing and be sure to accurately line up the pieces.
D 3. Sand the edges of the finished "wing joiner" to remove
any glue globes and test fit it in the wing joiner box. Some
sanding may be required to get a nice smooth but not loose
fit. If the joiner is loose, thick CA or epoxy may be used to
"build up" the joiner anywhere it may be needed to achieve a
nice fit in the wing.
IF YOU ARE BUILDING THE TWO-PIECE WING
SKIP AHEAD TO STEP 13
1/16" Ply Joiner
1/8" Ply Joiner
Aluminum Joiner Blade
1/16" Ply Joiner
D 1. We have included a "high strength" aluminum wing
joiner blade in this kit. If you are going to build your Spectra
with a two piece wing, use the aluminum joiner blade, a 1/8"
ply joiner and two 1/16" ply joiners as shown above. Sand the
sides of the aluminum joiner with coarse grit sandpaper and
then thoroughly clean it with rubbing alcohol before gluing in
place. If you are building the one piece wing, the aluminum
joiner is not necessary.
D 4. Prop up one wing half 2" (as measured from the work
surface to the bottom of rib W3) and sand the root (Inner) end
of the trailing edge, spars and leading edges to achieve vertical
surfaces as you did earlier for the outer panels. Do the same
for the other wing panel.
D 5. Test fit the two inner panels together by laying one panel
flat on the work surface and using the dihedral gauge to prop
up the other panel 4" (at the bottom of rib W3). Use the
dihedral gauge next to the last W2 rib to achieve the correct
angle. Make sure that each spar, etc. just touches the opposite
spar, etc. of the other panel. Carefully sand the longest ends
until a good joint is achieved between each member.
D 2. Use 30-minute epoxy to glue one of the 1/16" ply joiners D 6. Punch out all four of the Wing Joiner Laminations,
16