DG Airparts Super XC Instruction Manual page 15

Competitive sailplane
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Rudder (cont.)
3. Lay the fin post down in front
of the rudder keeping the differ-
ence in height of the fin post and
rudder about even on the top and
bottom. Locate the small hinge
location indentations on the lead-
ing edge of the rudder and mark
the fin post at approximately the
same location. The bottom inden-
tation is approximately 1/2" too
high, so mark the fin post 1/2"
below the bottom indentation.
Drill 1/8" holes in the fin post at
each mark.
Construction
4. Place the fin post up to the rud-
der and drill holes in the rudder
using the holes previously drilled
in the fin post. After you drill
each hole, use another drill bit or
music wire to keep the fin post
aligned.
5. Drill out each pilot hole with a
3/16" drill bit. Use the hinges to
hold the fin post in place while
drilling the second and third
holes.
6. Place two pieces of masking
tape above and below each hole
in the rudder.
Page 15
Super XC
7. Using the masking tape as a
guide, cut out a rectangular shape
large enough to allow the hinge
to move approximately 45° to
each side.
8. Drill out each hole in the fin
post to 1/4" and place the hinge
pockets in the holes.

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