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Jabiru J450 Constructors Manual
Pre-Paint>Wings>Cut aileron cable openings
Tuesday, April 6, 2010
166 of 343
Pre-Paint>Wings>Cut aileron cable openings
Objectives of this task:
Check the position of the wing rib near the aileron cable inspection openings and then check,
mark and cut the aileron cable openings.
Check and cut the aileron cable inspection opening
Turn the wing upside down and pack under the trailing edge so that the wing is stable.
Start by drilling a 38mm hole in the centre of the shaded rectangular area, and then place a
ruler into the hole towards the wing root until it touches the rib. Mark a reference line on the
wing (140mm has been used as the reference circled in the photos above).
Now remove the ruler from the hole and lay it on the wing with the reference mark lined up
and mark where the end of the ruler lies, which is where the outboard side of the rib is
located, and draw a line fore and aft at that point. Measure 12mm from that line towards the
wing root and draw another line: this marks both sides of the wing rib.
The position of the inspection hole should be no closer than 20mm from the outboard side of
the rib and no more than 65mm from the trailing edge of the wing. If it is not then you will
need to move the markings accordingly.
Use a jigsaw to cut the rectangular inspection hole slightly undersize and then carefully widen
to 80mm wide and 120mm front to back with rounded corners to fit the clear cover (drawing
on next page). Set the clear cover aside until after painting.
> 20mm
65mm max
20mm min