[CAUT] Agraffe noise

[Daniel Gurnee]

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Bob,

Dan G from Humboldt,

Try loostening a string so that it can be lifted with a string hook 1/2"
into the speaking length, lift 'til the string segment is approximately
30-45 degrees and rock the string/hook toward the bass and treble burnishing
the hole on the speaking side of the agraffe. This has worked on the Ds and
Bs at Humboldt.

Miss you in H. County

Dan



on 9/13/04 9:25 AM, Robert Callaghan at robert.callaghan@harmonicity.com
wrote:

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 

           

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