[pianotech] String Breakage

[reggaepass at aol.com]

It was amazing!  Most pins turned 1/2 a turn or more before the string let go. 
Just out of curiosity Mike, 1/2 turn of the pin = about what interval above the original pitch of that string?


Thanks,


Alan Eder





-----Original Message-----
From: Mike Kurta <mkurta1 at comcast.net>
To: toddpianoworks at att.net; pianotech at ptg.org
Sent: Tue, Mar 2, 2010 7:57 am
Subject: Re: [pianotech] String Breakage


    Paul, there is no rhyme or reason to string  breakage.  In general, it is less likely to happen with a new piano or one that has been restrung, but it can happen anyway. 
   I have tuned pianos stored on a porch (outdoors) that were a ball of rust, a third flat, pulled it up 100 cents over pitch and didn't break one string.  In other cases, with fairly new instruments just a slight touch on the tuning lever and the string let go.  In my experience, loosening first, then tightening or lubing various points makes no difference, (I'm sure I'll hear comments about this one). 
   We had a chapter meeting once where we took a junk piano and everyone took a turn at purposely trying to break the strings.  We each brought our tuning wrench and took turns cranking tighter and tighter until the strings broke.  It was amazing!  Most pins turned 1/2 a turn or more before the string let go. 
   Again, there is no rhyme or reason...... 
 
   Mike Kurta, RPT 
   Chicago chapter  

 
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