As I understand it, there are also things that can be done to the whip to allow for increased flexibility at the ends and the ability to use a smaller diameter core. This was the nature of Dr. Sanderson's last string related patent. I believe the Sanderson's call their version an "inharmonicity lump," although as Ron states, the benefit is in the smaller core, and the inharmonicity is along for the ride. There is a point of diminishing return, however. Too little inharmonicity in the bass and there will be no tone whatsoever. So it is still important to manage the low bass inharmonicity so that it is within an appropiate range and even from note to note. Jude Reveley, RPT Absolute Piano Restoration, LLC Lowell, Massachusetts (978) 323-4545 ----- Original Message ----- From: "Ron Nossaman" <rnossaman at cox.net> To: <pianotech at ptg.org> Sent: Thursday, May 21, 2009 9:24 PM Subject: Re: [pianotech] Steinway A Bass String Rescaling > William Truitt wrote: > >> Those of you on the list who have engaged in bass string rescaling along >> these lines, I would most appreciate your comments and your observations >> on the aural benefits derived from such machinations. > > > Getting the rebar cores replaced with something smaller and more flexible, > like that 0.053" you noted, is a big low bass improvement. Add double > wrapping, and you've improved the flexibility of the string enough that > there might actually be some fundamental in it instead of a lot of high > partial clank. Getting the break% up is then easy because of the smaller > diameter core. The inharmonicity decrease is an artifact of these > beneficial changes, and is just more or less going along for the ride. > Ron N > >
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