Ron, I couldn't tell if you were being serious or facetious. How does having a vertical pin 'steer' the vibrations one way or the other? Phil F --- Phillip Ford Piano Service & Restoration 1777 Yosemite Ave - 215 San Francisco, CA 94124 On Thu, 24 Jan 2002 15:54:49 Ron Nossaman wrote: >>It strikes me that the main thing about the Wapin arrangement is the >>near perpendicular disposition of the front pin. Without reading >>right through the patent I can't be sure if he says anything about >>the way the "bearing point edge" is cut and whether a small vertical >>drop is desirable (a feature Wolfenden admires in the practice of one >>maker, probably Ibach) or whether this angle should be at least >>steep, as it certainly is not on the Steinway. > >Yes, the vertical pin is the pertinent point. Tim Coates straightened me >out on this a while back. The purpose of the vertical pin is to steer the >string oscillations to horizontal, or parallel to the soundboard. This >slows energy transfer to the bridge/soundboard and extends sustain as a result. > > >Ron N >
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