This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment ----- Original Message -----=20 From: Richard Brekne=20 To: pianotech@ptg.org=20 Sent: September 08, 2002 1:15 AM Subject: Re: New Steinway D problem Thanks Delwin.=20 Does this item have a specific / proper name?=20 If there is, I don't know it. I've always heard it referred to as "the = bell." I'm not sure I understand your point about damping here. I thought you = were of the opinion that the problem with internal damping was that it = absorbed to much energy, tho here you are concerned about the plate = actually vibrating to much, and the purpose of the device itself = supports you.=20 Only in a perfect world are vibrating string terminations unaffected by = vibrating strings. In our world things aren't so clean.=20 The whole meaning of 'high internal damping' means that vibrating energy = transferred into the material in question--from whatever driving = source--is readily absorbed and converted into heat. Gray iron is = massive (but not perfectly massive) and it is moderately stiff (not = perfectly stiff). The bell/bolt arrangement effectively adds both mass = and stiffness to the hitchpin panel, reducing the amount of energy this = panel easily accepts from the strings, hence keeping more energy in the = strings to be used to move the bridge. Del ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/c7/6e/c6/99/attachment.htm ---------------------- multipart/alternative attachment--
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