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Gary,

Thanks for the suggestion on loosening the screws.
Here's what I discovered:
* On the left side of the frame, there are two metal leaf-springs that
apply pressure to the side of the wind card.  I was able to flatten
them slightly, so that I can shift the wind card to the left, under
the origin of the rotating disk.
* On the right side of the frame, there are no such leaf-springs to
take up the slack, so now the wind card slides through very easily!
* Under the removable part of the frame (the part that holds the disk
in place), there is also a sort of leaf spring to put friction on the
disk.  The one on the left side just fell off, and won't snap back
on.  Fortunately, once assembled, it holds itself together.  I applied
a little household silicone glue to hold it together long enough to
reassemble the computer.
* This mostly-plastic device has a lot of mild steel parts, which all
show corrosion -- especially the screws.  The washers are probably a
copper alloy (to explain the greenish corrosion).  This particular
Weems & Plath E6-b computer is probably not suited for the marine
environment.

I think the wind side is now a bit better than before, though I have
to be careful to apply my friction by hand as I hold the card up
against the left side of its track.

Now I have an idea what to look for the next time I'm looking at one
of these things!

Thanks!

On Aug 2, 9:35�pm, glap...@pacbell.net wrote:
> On the "wind side" you can loosen the four screws holding the two
> cross pieces in place (the cross pieces hold the rotating disk in the
> frame) and move cross pieces slightly to center the scales and tighten
> up the disk. There are also two plastic pieces in the frame that bear
> against the disk to put friction on it to keep it from rotating
> inadvertently, makes sure they are in place. If you heat them you can
> bend them to place more pressure on the disk.
>
> gl
>

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