[CAUT] M&H sost question

[mcneiltom at aol.com]

Hi, Greg - 

Yes, the sostenuto brackets are screwed into the belly rail.  You should be able to screw them in further as necessary.  Usually a small crescent wrench will do the job.   Since it has been 84 years since they were last moved they will undoubtedly be very stiff.  You may find it best to unscrew them and dab a bit of grease on the threads before driving them further. 
~  Tom McNeil  ~ 
Vermont Piano Restorations

Sent from my Verizon Wireless BlackBerry

-----Original Message-----
From: "Greg Granoff" <Gregory.Granoff at humboldt.edu>
Sender: caut-bounces at ptg.org
Date: Sun, 19 Sep 2010 17:47:55 
To: <caut at ptg.org>
Reply-To: caut at ptg.org
Subject: [CAUT] M&H sost question

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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