Great Planes Spirit 100 Sailplane Kit - GPMA0550 - Manual (Page 14)

BUILD THE OUTER WING PANEL
You'll need the following parts:
SPT1W03 1/16" Balsa DC Wing Ribs - W4S,
W6S, W7S, W9S
SPT1W04 1/16" Balsa DC Wing Ribs - W2SA & B,
W5S,W8S,W10S
SPT1W13 1/8" x 3/8" x 23-1/2" Basswood Outer Spars
SPT1W14 Shaped Balsa Leading Edge
SPT1W16 11/32" Balsa Notched Outer Trailing Edge
SPT1W23 7/8" Shaped Balsa Wing Tip Block
D D 1. Lay one of the Balsa Outer Trailing Edges
(SPT1W16) in place over the plan. Align the notches in the
trailing edge with the notches on the plans and pin it in position.
NOTE: The excess TE will later be cut off and used to
make the spoiler.
T-Pins
into the notches until it is flush with the top of the ribs. Remove
the spar and apply med or thick CA to the notches. Replace the
spar and allow the glue to cure.
Work Surface Spar
D D 2. "Cross pin" one of the 1/8" x 3/8" x 23-1/2" Bass-
wood Outer Spars (SPT1W13) in place.
D D 3. Locate the 1/16" (W4S - W10S) Outer Panel Ribs
(SPT1W03 & SPT1W04). Glue the ribs in place with med. or
thick CA at the spar Joint and a drop of thin CA at the trailing edge
joint. Use the rib gauge to keep the ribs perpendicular to the work
surface.
D D 5. Lay a Pre-Shaped Balsa Leading Edge (SPT 1 W! 4)
over the LEADING EDGE TEMPLATE on the plans. Use this
drawing as a reference to cut the relief notches. It is a good idea
to cut the leading edge approximately 1/4" longer on both
ends to be on the safe side. It can be trimmed to the correct Iength
after it is installed. The relief notches do not need to go all the way
through the leading edge but should go within 1/8" of doing so.
D D 16. Carefully bend the leading edge to the angle shown
on the plans and position it against the ribs. The bends should be
at ribs W6S and W9S. Align the leading edge with the ribs and
glue it in place, just as you did for the inner panel, except start at
ribs W6S and W9S. Add med. or thick CA to each relief notch
to fill in any gaps.
D D 4. Trial fit the Top 1/8" x 3/8" x 23-1/2" Basswood
Outer Spar (SPT1W13) in place by carefully pressing the spar
D D 7 With the panel flat on the work surface, install me
1/16" Shear Webs (SPT 1W24), following the same procedure as
you did on the inner panel. The webs will extend past the top spar
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