This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Have you tried "raking" the strings (everything in rest position) with a = fingernail or guitar pick to see if any dampers are letting any sound = bleed through? How about doing this with the sustain pedal depressed, = then released quickly to see what sounds continue to ring afterwards? When you strike the plate with the heel of your hand or whatever it = takes to cause the whole piano to ring, could you make the ring go away = by grasping the plate struts or planting a hand firmly on the plate = somewhere? I once ran into this phenomena on a Japanese-made grand. Z! Reinhardt RPT Ann Arbor MI diskladame@provide.net ----- Original Message -----=20 From: Kevin E. Ramsey=20 To: pianotech@ptg.org=20 Sent: Thursday, June 07, 2001 10:46 PM Subject: Plate Ringing 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 ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/74/65/62/8a/attachment.htm ---------------------- multipart/alternative attachment--
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