Hi Joe, Seems reasonable to me since the wire hootch e goo at the ends of the string would be shorter due to the increase of tension. Joe Goss RPT Mother Goose Tools imatunr@srvinet.com www.mothergoosetools.com ----- Original Message ----- From: "ryan sowers" <pianorye@yahoo.com> To: "Pianotech" <pianotech@ptg.org> Sent: Thursday, August 05, 2004 5:30 PM Subject: Re: Rescaling questions > Inharmonicity goes down with increased tension, all > other things being equal. > > --- Joe Garrett <joegarrett@earthlink.net> wrote: > > > David Renaud said: "to calculate rescaling. > > Never done this before. > > > > What is prefered range of tension and % of breaking > > point at various points along the scale? > > .....this is not for the bass strings. > > > > Old grand or upright piano(both) > > 160lbs average?? > > If Inhar. goes up by increasing tension with larger > > wire is this bad.....or is inhar good at some point? > > How much inhar. is too much?" > > > > David, > > Inharmonicity works in relation to tension. If the > > tension goes up, so does Inharmonicity. I was told, > > by my mentor, "do not exceed 60% of the breaking > > strength." Many times this is not possible to > > follow, but it's a good rule of thumb. I would > > suggest you consider using a "loudness/impedance" > > formula, as well. The combination of all, in, > > hopefully, linear graphs, will give you what you > > desire. When running a scale, I try to percieve what > > the intent of the piano designer/manufacturer was. > > Most of the time this is apparent, but many pianos > > were "copy-cat" types and the "copy" got lost in the > > translation! Doing lots of scales & putting them > > into practice, (ie rebuilds on your stuff<G>), is a > > big help in coming to the conclusions that will work > > for you and the pianos you are re-whatevering. > > Or.....you can send the scale to someone like me or > > Del or Ron or...????? and let them figure it out.<G> > > Best Regards, > > Joe Garrett, R.P.T. > > Captain, Tool Police > > Squares R I > > > ===== > Ryan Sowers, RPT Puget Sound Chapter > Pianova Piano Service > Olympia, WA > > > > __________________________________ > Do you Yahoo!? > Yahoo! Mail is new and improved - Check it out! > http://promotions.yahoo.com/new_mail > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives >
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