This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment ----- Original Message -----=20 From: David Love=20 To: Pianotech=20 Sent: July 05, 2002 9:25 AM Subject: Bridge design On a Steinway M there are several gaps between the bridge and the = soundboard at the lower end of the treble/tenor bridge. What is the = purpose of those gaps in design, and if one were remaking a bridge for = that instrument, would you duplicate that design? David Love For several reasons, including the foreshortening of the strings down = toward the end of the bridge and the consequent scaling problems, the = fact that only 28 wrapped bi-chords are used, relatively weak (flexible) = ribbing at that point, etc., the bass/tenor break ends up being = relatively awkward in this model. I don't know the official position on = this 'feature' but the effect is to reduce the energy transfer = efficiency between the strings falling on that portion of the bridge and = those some further up. I've been told they eliminate the thuddy = characteristic of the strings down toward the break. In practice they = don't seem to help much, if at all.=20 A better solution would be to straighten out the scaling in that area = and use an extension on the end of the tenor bridge to stiffen up the = end of the bridge -- even better, design in a transition bridge -- = and/or redesign the ribbing, and leave out the gaps.=20 Del ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/e1/37/31/60/attachment.htm ---------------------- multipart/alternative attachment--
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