[pianotech] upright expanding brackets

[tnrwim at aol.com]

Wasn't there a journal article about this a few years ago? 




-kurt





 I don't recall, can anyone tell me when it was?

Wim 



-----Original Message-----
From: Kurt Baxter <fortefile at gmail.com>
To: pianotech <pianotech at ptg.org>
Sent: Fri, Dec 30, 2011 12:42 pm
Subject: Re: [pianotech] upright expanding brackets


Wasn't there a journal article about this a few years ago?




-kurt


On Sat, Dec 24, 2011 at 1:18 AM, <tnrwim at aol.com> wrote:

It's strange that no one answered my question
 
Wim


-----Original Message-----
From: tnrwim <tnrwim at aol.com>
To: pianotech <pianotech at ptg.org>
Sent: Mon, Dec 19, 2011 6:54 pm
Subject: [pianotech] upright expanding brackets


I just tuned and worked on a Weber upright, 109, serial number TOOO 14141. I don't know what year it was made, but I'm guessing it's about 30 years old. The first thing I noticed when I was tuning was that the checking distance is about 3/4" to 1 inch, which gave the piano a funny feeling. I then started looking around, and found that the LO was at least a 1/4". Another oddity was that the last octave was barely audible, not like other YC and Samicks I've tuned. Other dimensions seemed OK, like the damper timing, and the position of the capstan on the wippen cushion. 
 
Has anyone ever experienced YC upright actions behaving this way? Is there any history of YC upright brackets expanding? After all, wouldn't the foundry that made the grand brackets also make the upright brackets? If these brackets are expanded, would the effects be what I found on this piano? 

Wim Blees RPT
Hawaii


 






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