What else was done to the piano along with the Wapinization? Carl Meyer Assoc. PTG Santa Clara, California cmpiano@attbi.com ----- Original Message ----- From: "David M. Porritt" <dm.porritt@verizon.net> To: <pianotech@ptg.org> Sent: Thursday, January 24, 2002 4:59 PM Subject: Re: Wapin bridge > Yesterday I tuned a Wapin Knabe 6'4" that is really very nice. Round > tone, smooth, slow decay even in the killer area. Very nice piano > indeed. I tuned it before it was "Wapinized" and while nice, it was > not what it is today. > > dave > > *********** REPLY SEPARATOR *********** > > On 1/24/02 at 3:54 PM 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 > > > _____________________________ > David M. Porritt > dporritt@mail.smu.edu > Meadows School of the Arts > Southern Methodist University > Dallas, TX 75275 > _____________________________ >
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