[pianotech] Petrof vertical string breakage.

Al Guecia/Allied PianoCraft alliedpianocraft at hotmail.com
Tue Sep 20 08:11:40 MDT 2011


Thanks All. 

Ron I'll get that info when I replace the string on Thursday. I will also find out what he was playing when the string broke and if it is the same one he was playing last time :-).


Al -
High Point, NC



On Sep 20, 2011, at 9:15 AM, Ron Nossaman wrote:

> On 9/20/2011 6:29 AM, Al Guecia/Allied PianoCraft wrote:
>> I have been servicing a 2001 Petrof vertical since 2006 with no
>> problems. In Aug 2010 my customer called and thought a string may have
>> broken. It had and I replaced the string (#14 1/2) and tuned the piano.
>> I tuned the piano again in Jan 11 & May 11 everything looked good (by
>> the way, he is the only player and plays only classical music). I just
>> got a call that a string has broken again and he thinks it may be the
>> same one.
> 
> May be, or one next to it. Time to go see for yourself and get a demonstration of playing style.
> 
> 
>> This piano has agraffes throughout. Any thoughts or suggestions? And if
>> it is the same string should I go with one size smaller?
> 
> A different size string, at a given length and pitch, will be at essentially the same break% as the original. You won't gain anything except fresh wire and will have a size mismatch in the unison for added tuning fun.
> 
> What note, what speaking length, so the break% of the original can be determined?
> Ron N
> 

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