GREAT PLANES Ryan STA EP Instruction Manual page 16

B. Position the sheeting against the notch at the back of
the main spar. Press down on the sheeting around the
landing gear rail. This will leave a chalk mark on the
sheeting.
C. Cut out the hole for the landing gear rail slightly
smaller. Then, trim the sheeting to fit.
28. Once you have the 1/16" [1.6mm] forward lower
sheeting trimmed to fit around the landing gear rail, glue the
sheeting to the main spar, bottom of the ribs, sub LE edge
and landing gear rail.
29. From the 1/16" [1.6mm] balsa sheeting trimmed
from the forward lower sheeting, sheet the center-section.
30. Trim and sand the lower sheeting flush with ribs
W1, W5 and the sub LE.
31. From the 3/8" x 3/8" x 12" [9.5mm x 9.5mm x
304.8mm] balsa stick cut three 1-1/4" [31.8mm] long hinge
backups. Glue the hinge backups to the front of the sub TE
as shown on the wing plan.
32. Glue the 1/4" x 3/4" x 30" [6.4mm x 19mm x
762mm] balsa leading edge, centered on the front of the
sub LE. Trim and sand the LE flush with the W1 and W5 ribs.
The remainder of the 1/4" x 3/4" [6.4mm x 19mm] stick will
be used for the wing tip filler.
33. Glue the die-cut 3/32" [2.4mm] balsa wing tips,
perpendicular to rib W5.
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