Plate Ringing

[Kevin E. Ramsey]

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    I had an odd occurrence today that I really hope that you all can =
help me with. I had a customer who has a new Steinway model 4510 (model =
45?) studio, with damper problems. When I got out there, it's kind of a =
damper problem, but not really. The problem is;

A)  The whole piano rings, when you play a chord or any note in a =
staccato fashion.

B)  The pedals are not lifting the dampers.

C) The spoons are not too early, the strings have plenty of follow.

D) The dampers are aligned properly.=20

    In short, no real problem with the damper system. What I did notice =
while working on the trapwork was that if I stuck the plate with the =
heel of my hand, the whole piano would ring. When you struck the piano =
anywhere, it would ring.=20
    I did notice that some of the bi-chords where indented by the =
strings, but they had plenty of follow-through.
    The waste ends on the hitch pin side of the strings were already =
braided.=20
    I tried striking notes with my hand on groups of strings, and no =
effect. I strummed groups of notes and found nothing leaking. And yet =
the whole piano had a real ring to it.=20

    I'm just wondering if the plate, being sand cast, could have warped =
and twisted enough to cause some weird tension on it which would cause =
it to ring like a bell. I mean, if something as massive as a plate =
wanted to ring, could you really expect the energy to go up the strings =
to be damped by little pieces of felt? =20
    I hope that someone can help me out. Tomorrow I call Kent Webb, and =
see if he can help.
    One interesting note here. This piano was just purchased three =
months ago. I looked it up in the Atlas, it was produced in '96.
     =20


Kevin E. Ramsey
ramsey@extremezone.com=20

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