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I cut out the molded in medicine cabinet and
light fixture bump-out in the rear dome of my '62 Globe Trotter, and was
surprised to see that there apparently are no ribs between inner and outer
skins. (Inner is one-piece fiberglass ... I needed the headroom for the shower
and plan to patch with 3 segment aluminum riveted to the fiberglass.) I would
have thought that tying those two layers together more consistently (other than
at the top of the window and at the rear vent) would have provided more strength
and rigidity to the rear of these units. I've noticed that my rear dome shows
evidence of a slight amount of rear sag - the seam where it joins the aluminum
ceiling panels at the rear of the rear vent show an offset of almost 1/8".
Many loose rivets, so I'm replacing them.
I was also surprised to see that the inner aluminum ceiling
skin is not riveted to the first rib down from the top (running front to back),
on which the exterior skin seam lays. It IS riveted from the outside. Is this an
intentional engineering technique to allow more flexibility?
Thanks for any input.
Bob Harper
'62 Globe Trotter in SC
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