Great Planes Ultra Sport 40 Kit - GPMA0410 - Manual (Page 27)

INSTALL TURTLE DECK
straighten it during this step by twisting it straight while
gluing the stringers. Trim and sand the ends flush with
the front of F-3A and the rear of F-6A.
You'll need the following parts: Die-cut 1/8" ply
F-3A, F-4A, and Backrest Gauge (BG); two 1/4" x
1/4" x 24" balsa turtle deck stringers; two 3/32" x 3" x
25" balsa turtle deck sides; and the 3/8" x 2" x 24" balsa
turtle deck top block.
4. Use a sanding block to sand the sides of the
stringers to blend with the formers (see the cross-section
drawings on the plan). Also, use a long sanding block to
sand the stringers and the tops of the formers in a straight
line from F-3A to F-6A.
3/32" x 3" x 25" balsa sheets to the angle shown in the
following sketch.
5. Prepare the turtle deck sides by cutting the two
1. Glue the die-cut 1/8" ply "backrest" (F-3A) to
the fuse top, using the' 'backrest gauge'' (BG) to set it at
the correct angle. NOTE: The gauge is used only for
setting the angle (do not glue the gauge in).
6. Trial fit one edge of the sheeting down onto the
top of the fuse side. Sand the edge of the sheeting if
necessary, for a good fit.
2. Glue F-4A, F-5A and F-6A to the fuse top, using
a square to position these formers vertically, at 90
degrees to the fuse top.
7. Glue the bottom edge of the sheeting to the top
of the fuse sides.
3. Glue the 1/4" x 1/4" x 24" balsa stringers to the
formers. HINT: If F-3A is slightly warped, you may
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8. Wet the outside surface of the sheeting with a
damp rag to permit easier bending (don t saturate the