Great Planes Super Skybolt 60 Kit - GPMA0170 - Manual (Page 28)

D 9 Cut two pieces of 1/16" balsa sheeting, from
the scrap 1 / 1 6 " sheeting you used on the tail
surfaces, to fit on each side of the fin They should
be approximately 1-3/4" on the front edge, 6-1/4"
long and 1-1/4" tall at the rear Sand the front edge
so it will butt up against the turtle deck sheeting.
Glue it first to the stringer on the stab, then to the
edge of the turtle deck sheeting Try to keep it
even with the turtle deck sheeting so the fillet will
not require a lot of filler later Glue the sheeting to
the fin post and the fillet top.
knots, soft spots, diagonal gram and any other
imperfections If possible, position each spar so
the imperfections (if any) are on the outer half of
the wing panel (toward the tip), where they will be
least affected by high stress If the spars are
warped slightly, try to balance them out by
installing the warped spars in opposite directions
(see sketch).
NOTICE: If you feel that any of the wing parts are
unusable due to severe warps or other defects,
give us a call and we'll replace the parts
D 10. Carve and sand the fillet to smooth it out
and blend it in with the turtle deck Put a strip of
masking tape along the fin to keep the sandpaper
from sanding the fin Use HobbyLite model filler if
needed to obtain a smooth looking fillet
D 2 Sand one end of each 1/8 x 3/8 x 18 balsa
spar doubler (SKY6W14) to a 2" taper as shown
in the photo (8 spar doublers total).
WING
NOTE: The following instructions
explain how to build the wing on a flat
surface, directly over the plans. The jig
tabs will enable you to build a wing as
straight as your work surface. No other
special j i g s are required to build your
Skybolt.
SPARS
0 3 Glue one spar doubler to each of the eight
1/8" x 3/8" x 28" balsa spars (SKY6W12) with thick
CA Refer to the plans and align the spar and the
doublers root ends with each other Take your time
and press the spar assembly flat against the work
surface while the glue is curing Also rotate the
assembly onto its side and press it down to keep
the doubler and spar aligned and straight Do this
on a flat work surface and most warps can be
eliminated Quickly wipe off any excess glue with a
paper towel before it cures Assemble all eight
spars in this manner and sand the edges smooth.
Two warped spars installed this
way will result in a straight wing
Two warped spars Installed this
way will result in a warped wing
D 1 Before using the hard balsa spars, examine
them carefully for possible imperfections. Look for
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