Great Planes Super Sportster 40 MkII ARF - GPMA1042 - Manual (Page 12)

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4. Cut the covering from the slots on the side of the fuse
for the stab. Cut a slit in the covering in the center of the slot
in the top of the fuse for the fin. Note the “flaps” of the
covering that will be ironed to the fin later. Remove the small
balsa spacer block.
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5. Taking accurate measurements, locate the center of
the stab on the trailing edge. Stick a T-pin through the center
of the stab 1/8" [3mm] from the trailing edge. Slide the stab
into the fuse and center the T-pin over the aft end of the
fuse. Push the T-pin into the fuse to hold the trailing edge of
the stab in position.
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6. Cut the covering from the holes in the top and bottom
of the wing for the wing bolts, then mount the wing to the
fuse with two 1/4-20 nylon bolts.
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7. Remove the elevators from the stab. Support the
model with a small stand or cardboard box. Stand five to ten
feet behind the model and view the stab and wing. If the stab
and wing align with each other, proceed to the next step. If
the stab and wing do not align, place a weight on the “high”
side of the stab to bring it into alignment (a weight may be
required on the opposite wing to hold the model on your
stand). If much weight is required, remove the stab and
sand the slot in the fuse where the stab fits until it aligns with
the wing.
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8. Stick a pin into the top of the fuse centered in the
middle stringer over the firewall. Tie a small loop in one end
of a 42" [1070mm] piece of non-elastic string (such as K & S
#801 Kevlar thread; K+SR4575). Slip the loop in the string
over the T-pin.
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9. Fold a piece of masking tape over the other end of the
string and draw an arrow on it. Slide the tape along the
string and align the arrow with one end of the stab as shown
in the photo. Swing the string over to the same position on
the other end of the stab. Pivot the stab about the T-pin and
slide the tape along the string until the arrow aligns with
both sides.
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10. Use a fine-point felt-tip pen such as a Top Flite Panel
Line Pen (TOPQ2510) to mark the outline of the fuse onto
the top and bottom of the stab.
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11. Remove the stab from the fuse. Use a sharp #11
hobby knife or follow the Expert Tip that follows to cut the
covering from the stab along the lines you marked. Use care
to cut only into the covering and not into the wood. Cutting
into the balsa will weaken the structure.
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