Great Planes Super Decathlon 40 Kit - GPMA0185 - Manual (Page 22)

TAPERED TAIL POST
, (Sand off flash with top
of stab support)
D 14. Sand the die-cut 1/8" ply stab base as necessary for
a good fit between the stab supports, then glue the stab base
in place, flush with the top edge of the stab supports.
TAPERED TAIL POST
(View from rear)
STAB SUPPORT
LOWER FUSELAGE
two stringers 12" long. Cut these pieces to run from the notch
in front of F-5T to the aft edge of F-7T. Glue the stringers to
F-5T, F-6T and F-7T, then sand to blend with the formers.
D 16. Cut the 1/2" x 36" balsa triangle in half to make
two pieces 18" long. Cut these pieces to run from the front
edge of F-4T to the aft edge of F-7T. Try pressing the
triangles down onto the 3/16" x 3/16" stringers. If the
triangles are hard balsa, you may have to make several partial
saw cuts with a razor saw (as shown in the photo) to permit
easy bending. Make the cuts approximately 2" apart. Glue
the triangles to the formers. If you made saw cuts, you should
now apply thin CA to each cut. Finally, use your sanding
block to sand the triangles down to blend with the lops of the
formers.
NOTE: The glue joints where the stringers meet the stab
saddle area are critical; therefore, please look them over
again and add thick CA or 5-minute epoxy to insure very
strong glue joints in that area.
D 17. Prepare the top rear sheeting as follows: Cut the
3/32" x 2-5/8" x 13-1/8" balsa sheet on a diagonal as shown
in the following sketch...
D 15. Cut the 3/16" x 3/16" x 24" balsa stick in half to make
Now edge glue the two pieces together as shown in the
following sketch...
Sand the glue joint smooth, using your T-bar sander with
100-grit sandpaper.
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