[CAUT] Agraffe noise

[Thomas Seay]

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Bob,

Knowing a few more of the particulars about this piano may help 
diagnose the problem, such as:

Manufacturer
Model/Size
Age
Original strings or restrung

Good luck,

Tom

>Dear List,
>
>I just started at the local college.  There is one grand piano there 
>where many plain wire strings and a few bass have a very loud hiss 
>or sizzle.  If is was a bass string you'd think the copper wrap was 
>loose, but twisting the string didn't help.  It is the worst case of 
>this I've ever seen.
>
>The piano has signs of being worked on.  Beside pieces of felt stuck 
>here and there trying to get rid of the zinging,  there are Pin-Tite 
>stains on the plate and rock hard, overly lacquered hammers.  On 
>other pianos I've had good luck tugging upwards on the string, or 
>cleaning out the hole in the agraffe.  But that hasn't helped in 
>this case.  If I push down firmly on the string on the tuning pin 
>side of the agraffe it stops.  There is felt there so it isn't a 
>vibrating string.  In my research I found a Journal article that 
>mentions that maybe the agraffe itself is loose.
>
>I wanted to run this by you all before I began testing this theory, 
>or perhaps someone knows exactly what the problem actually is.  (And 
>because I have the piano faculty looking over my shoulder I  want to 
>be right the first time!)
>
>Thanks for any insights.
>
>Bob Callaghan


-- 
Tom Seay
Piano Tech Office
School of Music
The University of Texas at Austin
(512) 232-2072
mailto:t.seay@mail.utexas.edu

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