Great Planes Tracer 46 Kit - GPMA0400 - Manual (Page 12)

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1b. If you will be installing fixed gear, glue the four die-
cut 1/8" ply rib doublers with one slot to the pair of die-cut
3/32" balsa ribs 3 and 4, being careful to make a left and
right rib 3 and 4. Note: Make sure the slot in the doubler
going on rib 3 is in the same direction of the servo tray slot
in rib 3.
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2. Trim the balsa ribs as shown, using the openings in
the rib doublers as a guide. Note: The ribs in the photo are
for retracts. If you are using fixed gear, trim your ribs in the
same manner but with only one landing gear rail cutout.
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1. Tape the right wing plan to the work surface and
cover the wing drawing with GP Plan Protector (so you
won't glue the wing to the plan!) Remember, we are
building the right wing over the right wing bottom view.
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2. Pin a 3/16" x 3/16" x 30" balsa wing jig stick over
the wing jig position shown on the plan. Note: Do not pin at
the rib positions.
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3. Align the spar labeled “right top” at the inboard end
with the lettering facing up and cross-pin it in place. NOTE:
Remember that the top spar is against the plans right now
because the wing is being built upside-down.
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4. Fit the die-cut 3/32" balsa ribs 3 through 9 onto the
top spar. Note: Make sure the ply rib doublers on ribs 3 and
4 face each other and the notches are up. The ribs must be
resting on the 3/16" x 3/16" wing jig.
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5. Using a square to keep all the ribs perpendicular to
the work surface, glue the ribs to the top spar.
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6. Use the die-cut 1/8" ply dihedral gauge to locate
the inboard end of the bottom spar, then position the
bottom spar in the ribs. Being careful not to twist the ribs,
glue the bottom spar in place.
IMPORTANT NOTE: The following instructions explain
how to build the wing directly over the plans. We'll start by
building the right wing panel upside-down over the right
wing panel plan so your progress matches the photos.
Build the Wing Panels
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