Great Planes Super Sportster 40 MkII Kit - GPMA0205 - Manual (Page 10)

D D 14. Install 1/16" x 3" x 1-3/8" balsa shear webs on
the aft side of the spars from W-2 to the wing tip. Install
one extra shear web on the forward side of the spars
between ribs W-2 and W-3. Use medium CA and be sure to
get a secure bond. It's not necessary for the webs to be
glued to the ribs.
D 1. Test fit the 7/16" x 5/8" x 4" grooved basswood
landing gear rails into the notches on W-2 and W-3. If
necessary, carefully sand the notches to allow a snug fit.
The landing gear rails should protrude above the ribs
by 3/32".
D D 15. Use a 1/4" drill bit to drill the wing mounting
dowel hole through the LE. The best way to have the holes
line up perfectly is to manually twist the drill bit with your
fingers as shown in the photo. If you have a "Pin Vise" tool,
this would work even better. You can also mark the location
of the hole with a pin pushed through from the inside of the
dowel support, then drill the hole from the LE inward. If you
use the last technique, start with a 3/32" pilot hole, then
slowly enlarge the hole while making adjustments to
the alignment.
D D 16. Round off both ends of the 1/4" x 2-3/4" hardwood
wing dowels (See wing plan) Test fit a dowel (without
gluing) into the LE and aft dowel support. The fit should be
snug, so don't enlarge any of the holes more than
necessary. When satisfied with the fit, remove the wing
dowel and set it aside for later use.
D 2. Use 30-minute epoxy to glue the rails in position.
Epoxy (and clamp for a secure bond) the 7/16" x 5/8" x 3/4"
grooved hardwood landing gear blocks to the inside of the
landing gear rails and also to the ply doubler on W-2. It is
essential that the landing gear blocks be accurately aligned
with the landing gear rail.
D 3. After the epoxy has fully cured, drill a 5/32" hole
through the landing gear rail working from the top of the
landing gear block, as shown. By drilling in this manner the
block acts as a guide for perfect landing gear alignment.
D 17. Repeat steps 3-16 for the other wing panel.
D 4. Carve a slight radius in the groove of the landing gear
rails at the location of the hole. This radius will permit the
landing gear wire to fully seat in the groove.
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