----- Original Message ----- From: "Cy Shuster" <charter1400@charter.net> To: "Pianotech" <pianotech@ptg.org> Sent: May 28, 2003 8:05 AM Subject: Re: Stringing Braid and the perception of doing it right > > I imagine (don't know) that those string segments still vibrate against the > braiding felt (perhaps more slowly). This seems like a waste of perfectly > good kinetic energy. If they could be made stiffer, or have more mass, > wouldn't their energy be reflected back into the speaking length, the same > way we want rims to be rigid? Let's not confuse what is happening in the backscale with what takes place in the frontscale--the distance between the V-bar/agraffe and the front bearing bar. Braiding out the backscale will prevent sympathetic vibrations from developing in the backscale string segments, it will not prevent them from moving. Their motion will still track that of the bridge. The front scale is a whole other issue. The V-bar/agraffe should not be moving and most energy making it past the string termination point will be lost. I don't see damping the backscale string segments as being particularly harmful to overall sustain time. Whereas allowing energy to leak past the V-bar/agraffe is. > > Adding mass could have more side effects (damping soundboard motion); what > about snap-on sleeves of some kind? You'd have to prevent buzzing somehow. > Could they even be coupled across each other in a way that would still allow > tuning movement? Stiff plastic sheet, a few inches wide? Isn't this all overkill? Stringing braid works--when required--just fine and does not have the effect of mass-loading the vibrating system. Or did I miss something? Del
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