Great Planes Super Skybolt 60 Kit - GPMA0170 - Manual (Page 10)

TEMPORARILY INSTALL HINGES
D 1 Using the plan as a guide, mark the hinge
locations on the stab, elevators, fin and rudder
Designate one side of the stab as being the top and
one elevator as being "right" and the other as "left".
D 11 Glue one 5-1/4" sheet to each elevator at
the angle shown on the plans and in the photo so it
overlaps onto S-6 approximately 1/8" Cut a corner
off the unused end of the sheet, and glue it at the
front tip of the elevator Trim the sheeting flush with
the edges of each elevator.
D 12 Glue the remaining sheeting in place on the
other side of each elevator so that it too overlaps
only approximately 1/8" onto S-6 Be sure the
elevator is kept flat until the glue cures Trim and
sand the sheeting flush with the edges of
the framework
CAUTION!!!: You must use extreme care
when cutting hinge slots with a hobby
knife, to avoid cutting yourself! If the
balsa part breaks while you are pushing
on the knife, the blade could go into your
hand before you know it! A good
precaution is to wear leather gloves while
performing the following steps.
D 13 Cut four 4" long pieces of 1/16" x 1-3/8"
balsa sheeting from what is left of the 1/16" x
1-3/8" x 24" hard balsa sheeting (SKY6S07) Glue
these to both sides of each elevator, next to the
sheeting that stops at S-6
D 14 Sand the leading edge of the elevators to a
"V-shape" as shown on the plan Round off the
tips and the trailing edge, but keep the inside edge
(marked with an arrow) square
D 2 Cut the hinge slots on the centerlines you
drew earlier Our recommended hinge slotting
method is described below.
A Begin by carefully cutting a very shallow slit at
the hinge location The first cut is to establish
your cut in the right place, so concentrate on
staying on the line and don't cut too deeply.
B Make three or four more cuts in the same line,
going slightly deeper each time. As you make
these additional cuts, work on going straight
into the wood Continue this process while
"wiggling" the knife handle forward and
backward until the blade has reached the
proper depth for the hinge
C. Trial fit the hinge into the slot If the hinge is
difficult to push in, re-insert the knife and move
it back and forth in the slot a few times to
enlarge the slot Do not glue the hinges yet.
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