Gidday,
Whilst trying to sort out a difference in the trailing edges of my
stabilators/elevators,
port one being higher, when I knew my jigs etc for setting up this
sort of thing was meticulous, if not my strength, I should probably have been
a jig builder not an aircraft builder, I came up with a possible solution Id
like
to air. So, I noticed my tailplanes were not level when my wings were. I
have removed my torque tube pin receptacles from the port root closeouts, and
I endeavoured to get the stabs level prior to rebounding in the receptacles when
I realised I could lift the port tailplane, trying to take up slack in the
elongated pin receptacle holes, and I noticed the stud tailplane also moved. It
was then I realised the lifting of the port tailplane, from below, was rocking
the entire tail, torque tube and all. The lower fuselage hemisphere has a twist
in it, or so it seems. I dont quite know how this has now occurred, as I
know I would have put my tailplane torque tube in level, but now its not. Had
I left it the way it was, and didnt do the drive pin repair, it would have had
the Port tailplane higher than the left, and combined with single pilot weight
asymmetric loading, would have helped to created unwanted roll.
So, I now am thinking I might do a DNA mod, like the visualisation of two
ladders
held 180 degrees opposed down the sides of a column, and then the column
twisted,
and removed, leaving twisted ladders. If I do something similar with an
inert substrate, perpendicular to the floor, and twisted up from baggage bay
to tail, with a 2 ply fence layup, say 1 high on both sides, forgoing a 1-2 kg
penalty, would that not be a worthwhile outcome? It might only be on the lower
half of the fuse, but I suspect it will hold the tail section true. I also am
aware the top hemisphere might act like a continual, banded row of fences, and
to that end I need the advice of the list. Should I just jig the lower fuse,
the tailplane torque tube, and get the geometry sorted accordingly, and bond
the top on to hold it all without the twist?
Regards
Tony Renshaw
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