GREAT PLANES Ryan STA EP Instruction Manual page 15

rib W5. Trim the building tabs off of the bottom of the sub TE.
Trim the TE sheeting stop tabs, at the aft end of the W1, W2
and W3 ribs, to a point. Also sand the aft edge of the TE
sheeting to match the angle of the ribs. Trim the TE sheeting
flush with the sub TE at ribs W4 and W5.
20. Trim the main spars flush with rib W1 and save the
excess main spar for use later. Trim and sand the LE
sheeting, TE sheeting, sub LE and sub TE flush with rib W1.
21. With the wing upside-down, pin the sub TE to your
building board. Cut a 1/16" x 3" x 30" [1.6mm x 76.2mm x
762mm] balsa sheet 23" [584.2mm] long and 2-1/4"
[57.2mm] wide. Fit and glue the sheet to the ribs, sub TE
and the top TE wing sheeting.
22. Sand the balsa sub LE flush with the top of the ribs.
23. Cut the 1/4" x 3/4" x 7" [6.4mm x 19mm x 177.8mm]
grooved basswood landing gear rail in half.
24. Use epoxy to glue the landing gear rail in the notches,
centered between the W3 ribs.
25. Use epoxy to glue the 3/8" x 3/4" x 3/4" [9.5mm x
19mm x 19mm] landing gear torque block to the back of
the landing gear rail and the W3 rib. Make sure the torque
block is glued towards the tip end. A couple of T-pins can be
inserted from the top of the wing, through the LE sheeting,
to press the torque block against the landing gear rail.
26. Drill an 1/8" [3.2mm] hole, 1/2" [12.7mm] deep
through the landing gear rail and torque block. The hole
should be perpendicular to the landing gear rail and 1/4"
from the W3 rib. Be careful not to drill through the top LE
sheeting.
27. Cut a 1/16" x 3" x 30" [1.6mm x 76.2mm x 762mm]
balsa sheet 23" [584.2mm] long for the forward bottom
sheeting. The sheeting must be trimmed to fit around the
landing gear rail so that it fits flush with the top of the rail.
HOW TO LOCATE STRUCTURE UNDER SHEETING
A. Using chalk, mark the outline of the landing gear rail.
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