A simple lightweight method is to braze a flange on each, to lie in the plane
of the plywood, the flange then being pinned through. I did the TP5's this
way when they came loose. The buried TP6's would of course need to be done
at build time.
Shortening the tubes too considerably reduces galling and a taper plug in the
end of the torque tube guides it in without clonking.
While on guiding, main spar guides have been fitted by many at the bottom of
the entry apertures to assist wing spar entry and prevent downhill motion
onto the quick release mechanism. However they do not guarantee entry of the
end into the cups 3 ft away. I suggest adding the following.
For the port wing, a removable tapered wooden plug (around 2"x2"x7") with a
flange pushed into the starboard entry aperture will guide it in
effortlessly.
For the starboard wing a permanent tapered guide reduxed to the aft wall
positioned inboard of the port spar cup.
Graham G-EMIN
Graham G-EMIN
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