Re: [ARSCLIST] Turntable Reverse Rotation

[David Lennick <dlennick@xxxxxxxxxxxx>]

Funny you should ask this, since a message arrived simultaneously on the 78-L
list about a turntable which operates forward and in reverse. Of course it
probably accommodates nothing larger than 12-inch discs, so if you don't mind
breaking off the outer portions of the disc....(is this one that came from me,
btw?)

dl

"Kevin P. Mostyn" wrote:

> I am working on a project of transferring a collection of 16" lacquers, a
> number of which have suffered water or humidity damage, due to poor storage
> conditions.
>
> One of them is a glass base disc of the Koussevitzky 2/27/1943 world
> premiere broadcast of the Roy Harris Symphony #5. One side of the disc is
> playable; the other side is delaminating. A portion of the lacquer has
> started to peel off, but is still attached. I have had some success with
> re-affixing peeling lacquer in the past, but unfortunately, differential
> shrinkage has set in, and the partially peeled off section does not quite
> align with the unpeeled section. The method of re-attaching the peel is
> temporary and not strong, and I would appreciate any hints on a permanent
> method.
>
> While I can readily deal with the clicks and clunks this will cause, I am
> reluctant to try to play the side, as the normal rotation of the disc and
> stylus would "go against the grain" of the peel, and the stylus would try to
> lift the peel off the glass. I would probably have a greater chance of
> success in playing this side if I could play the disc while it is rotated
> counter-clockwise, and at 16 2/3 rpm.
>
> Has anyone here ever done this? Of course, the arm will have to be
> re-mounted, and there will be a problem with the offset geometry, but I'm
> willing to suffer the tracking angle distortion if I can play this disc. I
> do have an aircheck of this performance, but the sound on this disc is
> rather better, and without the severe pitch problems of the aircheck.
>
> Any advice would be greatly appreciated. Thanks!
>
> Kevin Mostyn