String breakage

[Joe & Penny Goss]

John,
Twas the straw you know!
Joe

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> From: John R Fortiner <pianoserv440@juno.com>
> To: pianotech@ptg.org
> Subject: String breakage
> Date: Sunday, September 13, 1998 9:15 AM
> 
> Dear List:
> 	A couple of days ago I was tuning a 1908 Chickering uprt.  I had
> previously tuned this instrument 2 years ago with one string breaking
> during a 50c pitch raise to A440 - no suprise.  During the tuning a
> couple of days ago, however, I had run across a couple of tuning pins
> that were not really holding and decided to replace them with 3/0 pins to
> cure the problem.  What I can't figure out is that during the pitch pull
> to +3c before the tuning everything was fine ( except, of course how well
> those two tuning pins held ).  The puzzle - at least to me - is that
> after bringing the piano all the way up nothing broke - however, when I
> loosened one of the bad pins to remove the wire so I could replace the
> pin with an oversized one, the wire broke.  I am not talking about an
> enormous amount of turning, but rather something like less than 5 degrees
> of arc.  Any rational behind this?  Your input is - as per usual - very
> appreciated.
> 	ps.  I have seen this happen a few times before, but have never
> been able to figure out the why of it.
> 
>                                                                          
>                           John Fortiner
> 
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