Top Flite TOPA0155 - Manual (Page 42)

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10. Place the incidence meter on the same
workbench you are building the fuse on. Turn on the
incidence meter and set it to zero.
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11. Lay the fuse upside-down on the workbench.
Center the wing in the fuse using the centerline you
drew on the bottom of the wing. Place weights on the
bottom of the wing to hold it down. Place the
incidence meter on one side of the wing next to the
fuse. Read the meter. It should read minus one
degree (which means that the wing has one degree
of positive incidence since the model is upside-
down). Take a reading on the other side of the wing
next to the fuse just to be certain.
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12. If necessary, carefully sand the high end of
both fuse sides to adjust the wing incidence.
Reposition the wing and check the incidence. Make
adjustments until the incidence meter reads minus
one degree (indicating that the wing has one degree
positive incidence).
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13. Center the wing in the fuse again and place
weights on top of it to hold it down. Using the holes
in the formers as a guide, drill 1/4" [6.4mm] holes
through the LE of the wing and through the forward
and aft dowel plates inside the wing. Hint: Use a 1/4"
[6.4mm] brass tube sharpened on the end to drill the
holes. Mark the tube or drill 3-1/2" from the end to
drill the holes the correct depth.
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14. Cut both 1/4" x 3" hardwood wing dowels to a
length of 2-3/4". Round one end of both dowels, then
test fit them into the wing and fuse. Hint: If difficulty
is encountered fitting the dowels into the wing or
fuse, sand them in a drill so they fit a little easier.
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15. Glue the dowels into the wing (or wait until
after the model has been final-sanded and covered).
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16. Mark the bottom of the wing 9/16" aft of the
center TE spar and 1" from the centerline where the
holes are to be drilled for the wing bolts.
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17. With the wing dowels in the wing, reposition
the wing on the fuse. Place weights on top of the
wing to hold it down.
❏
18. Stick a pin into the center of the tail block near
the aft end of the fuse. Tie a small loop in one end of
a 48" 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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19. 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 wing as shown in the photo. Swing the
string over to the same position on the other end of
the wing. Adjust the wing and slide the tape along
the string until the arrow aligns with both sides.
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