Top Flite Sierra 40 Trainer Kit - Manual (Page 24)

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65. Fit the pieces 5-6 in place behind the spar on
the bottom of the wing. Cut a notch to go around the
aileron servo tray support if present. Glue the wing
skin in place.
66. If you are using ailerons, cut a couple of 1/4"
wide strips from scrap 3/32" balsa, glue them in as
shown in the photo to stiffen the bottom wing skin
where the servo cut-out will be made.
67. For planes with ailerons, snap the aileron
servo tray in position and trace the shape of the cut-
out on the bottom wing skin. Remove the servo tray
and cut out a slightly oversized opening for the
aileron servo.
68. Fit the forward bottom wing skins (4) to the
wing, and glue in place.
69. Fit and glue on the top wing skins (1 and 2-
70. Sand the joints in the center of the wing with
a block and sharp 220 grit sandpaper.
FINAL ASSEMBLY
1. Fit the wing on the fuselage wing saddle. Trim
the aft edge of the wing trailing edge at the center
with a sanding block if necessary for a good fit.
ELONGATE HOLE
IF NECESSARY
NOTE: For bolt on wings, the wing dowel hole in
F-3 may be oblonged some if required to let the
wing sit flat on the saddle or to allow for wing
seating tape. If the hole requires oblonging, do
so with a round file or a #11 knife.
2. Remove the wing from the fuselage. Mark a
centerline on the 1/16" x 1-7/8" x 5-1/2" plywood 3).