cracked plate?

[David Ilvedson]

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Of course this is why we need to always begin a service appointment with a=
 disclaimer, especially if the piano hasn't been tuned a long time and is=
 far below pitch.  Wim, with that disclaimer you can include all your=
 paranoias...Mine, up till now, was simply that a string could break with=
 the pitch change and that it was out of my control.  I put the onus on the=
 customer for lack of service.  In 28 years I have never had a plate or=
 soundboard crack on me while tuning...I do still have an aversion to=
 strings breaking...it never fails to make me jump!

David I.
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On 2/21/01 at 8:08 AM Wimblees@AOL.COM wrote:
In a message dated 2/21/01 5:46:09 AM Central Standard Time, 
dnereson@dimensional.com writes: 



Set the temperament, tuned octaves to the top, then started in on the bass,=
 
and while tuning bass unisons, I heard "the big bang".  Now the first 
octave of the plain wire section was suddenly a quarter-step flat, but the 
bass and rest of the treble were still up to A=3D440 level.  So I took the 
action out and with a bright light inspected the plate very closely and 
could find no cracks.  There was one hitch pin that had two very small 
hairline cracks around it, but someone (maybe the factory?) had relocated 
the hitch pin about 2 inches lower, out of the cracked area.  I searched 
and searched and could find no evidence of plate cracking, rib separation, 
bridge splitting, pinblock separation or anything else having given way


I heard that once, and the soundboard cracked. Perhaps there is no rib 
separation, but the crack could still be there somewhere. The customer=
 heard 
it, and called me back later to complain about a "funny" sound. I told her 
the soundboard cracked,     and that there was nothing I could do about it.=
   
This is one of the reasons I never raise pitch an old upright. It happened=
 to 
me once, I don't want to have it happen again. 

Willem 


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