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Does anyone else have problems getting the wings on? I am exhausted from
an hour of struggling with the wings. Plane is close to flying, has been
taxied several times and all seems fine. One problem with the wings seems
to be the flap pin and the swivel bearing. It looks like it should just go
right in but it does not without much jiggling and fiddling. Even when the
flap pin engages, the wings are resistant to the last 3/4 inch. Has anyone
changed the flap pin system to something that works? Am I the only one
with this problem?
Ken Carpenter
A123
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We found that the swivel bearing in the flap drive tube tended to rotate
and jam the pin when the round end of the drive pin bumped into it. We
solved the problem by making a bullet shaped point about 1" long out of
redux on the flap drive pin. This guided the bearing into alignment and
the extra length allowed it to be entered first leaving one free to align
the wing lift pins without the worry about the flap pin falling out.
We put engineers blue on all the points that could be tight on the spar and
gradually relieved the tight spots until the wings slid in smoothly (the
mating faces of the spar bushes required a slight bevel)
Ted
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