[CAUT] M&H sost question

[Dennis Johnson]

Hi-

Just last week I was in exactly the same situation. I don't see many
original old M&H grands here so this was new to me also. Piano owner is a
piano faculty member who recently returned with his find from the west coast
and was standing there with me while I had to decide what to do.  I politely
exercised the option to phone a friend and would return another day.

In my case it mostly needs to be lowered slightly, but  I'm concerned that
bending the hanger bracket will damage the hole in the rail. Removing it
first, then bending and reinstalling to same place, seems like too much
trial and error.   I doubt my bending pliers will work on that size rod, but
could give it try.   Easy to see why this design never took off.  I'm open
to any other suggestions also.


thanks,

Dennis Johnson
__________

On Sun, Sep 19, 2010 at 7:47 PM, Greg Granoff
<Gregory.Granoff at humboldt.edu>wrote:

>  Dear List,
>
> I’m assisting/guiding a friend and university colleague on a fairly
> thorough restoration of an M&H ‘AA’ from 1926.  The problem is the sostenuto
> system does not work—there is no way the sost rail can make contact with the
> tabs as it is simply too far away on a horizontal plane—and yet there is no
> adjustment whatever on the brackets which would bring it closer. There is no
> evidence that anyone has ever messed around with this assembly, yet there is
> no way the system could work with the current setup—in fact, we are
> beginning to wonder whether it _*ever*_ worked at all.
>
> It looks as though it might be necessary to remove the brackets from the
> belly rail and make them able to drive deeper into said rail if the system
> is to function.  I would rather wait to do any creative bending until other
> paths are exhausted.
>
> Question:  I’m wondering if anyone has any direct experience in the
> removal/insertion of the sost brackets in the belly rail in an instrument of
> this vintage.  Are they screwed in?—driven in?—anyone know?
>
> Thanks for any suggestions/knowledge about this.
>
>
>
> Greg Granoff
>
>
>
> *Gregory J. Granoff  RPT*
>
> *Staff Piano Tech*
>
> *Humboldt** State University*
>
>
>
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