Baldwin SD-10 Treble Counterbearing

[David Love]

Changing the angle without changing the radius might very well be
counterproductive.  I'm not sure why it would introduce tuning instability.
While I didn't measure the angle, it appeared to be a bit shallow for the
given length.  But if correcting the radius by itself was successful, I have
no problem with limiting the alteration to that.  

 

David Love
davidlovepianos at comcast.net
www.davidlovepianos.com 

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Horace Greeley
Sent: Friday, July 28, 2006 9:08 AM
To: Pianotech List
Subject: RE: Baldwin SD-10 Treble Counterbearing


I've generally found that shimming the back of the plate introduces more
problems than it may solve...increased buzz and tuning stability issues
being the main culprits.

Ron, I really like the new radius you put on the bearing.  That should clean
things up a good deal.  Also the plating was different between the earlier
and later versions.  I suspect that your electroless nickel is the ticket.

Best.

Horace

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