Hi David, and others. A few general links beyond the link I supplied earlier to Dr. Andressen are supplied below. The first link is an interesting bit about the Stuart frame. Seems to me a bit odd that some who usually rely heavily on math alone to support their claims about this or that idea more or less out of hand reject the claims made by the folks behind the Stuart agraffe despite the presence of hard mathematical analysis, and do so based only on casual eyeball observation. The basic claim is that the strings vertical vibration time is increased significantly and that this is directly responsible for an increase in sustain. For more information on the mathmatical proves worked out contact. Might help to get his input to add to all the speculative musing of the past few days. Dr. Robert Anderssen Computer Science and Information Technology Building Australian National University North Rd Acton ACT 2601 Bob.Anderssen@csiro.au <mailto:Bob.Anderssen@csiro.au> <mailto:Bob.Anderssen@csiro.au <mailto:Bob.Anderssen@csiro.au>> http://www.strand7.com/html/pianopaper.htm http://www.newcastle.edu.au/news/media-releases/1999/mr776.htm http://stereophile.com/thefifthelement/105fifth/index1.html http://202.162.96.40/stuartpianos/reviews.html http://www.cmis.csiro.au/Community.htm Cheers RicB
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