----- Original Message ----- From: "Richard Brekne" <Richard.Brekne@grieg.uib.no> To: <pianotech@ptg.org> Sent: September 09, 2001 10:29 AM Subject: Re: Killer Octave > Using the following definition of a Leaf spring... it would almost seem that > one could stretch the point to view the whole soundboard assembly as something > very similiar to a leaf spring to begin with... > > LEAF SPRING > > an element comprising a plate or bar or a plurality of superposed plates or bars > and which exhibits resilient characteristics when a portion is deflected > transversely of length of the element. As I've pointed out in many writings and many convention and conference classes, it very nearly is. Actually it is a bit more like a disc spring, but the two are really quite similar. > It would seem to me that in anchoring both ends of the spring the energy losses > would be minimized. Or just one end. There are lots of advantages to this. One obvious one being the ease with which it could be made adjustable. > In anycase it would seem reasonable enough to give it a try. One could actually > install such a spring (wooden as Del suggests) pretty easily on just about any > instrument and measure the resulting change in sustain and loudness. Might be > interesting. Yup. Might be. Del
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