[pianotech] upright expanding brackets

[Kurt Baxter]

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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