Rescaling questions

[Joe And Penny Goss]

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Hi Ryan,
Yes this is so. The wire thinks that it is shorter ( if it has a brain =
<G> =20
and the little hootch e goo is longer but the string length is the same.
Joe Goss RPT
Mother Goose Tools
imatunr@srvinet.com
www.mothergoosetools.com
  ----- Original Message -----=20
  From: ryan sowers=20
  To: Pianotech=20
  Sent: Friday, August 06, 2004 12:43 AM
  Subject: Re: Rescaling questions



  Joe stated that:=20
  > > Inharmonicity works in relation to tension. If the=20
  > > tension goes up, so does Inharmonicity=20

  I was simply stating that increasing tension on a wire actually lowers =
its inharmonicity. Of course, if you raise the tension of a particular =
note by increasing the wire size you will get a net gain of =
inharmonicity, but this is due to the greater stiffness of the thicker =
wire, not the greater tension.=20



  >=20
  > ----- Original Message -----=20
  > From: "ryan sowers" <pianorye@yahoo.com>=20
  > To: "Pianotech" <pianotech@ptg.org>=20
  > Sent: Thursday, August 05, 2004 4:30 PM=20
  > Subject: Re: Rescaling questions=20
  >=20
  >=20
  > > Inharmonicity goes down with increased tension,=20
  > all=20
  > > other things being equal.=20
  > >=20
  > > --- Joe Garrett <joegarrett@earthlink.net> wrote:=20
  >=20
  >=20
  > Squuuuuuzzzzzz me!!!!! Ho! w do you get increased=20
  > tension with other things=20
  > being equal? Speaking length for instance?=20
  >=20
  > If you have a note with a particular size wire,=20
  > increasing the wire size=20
  > will increase the tension and the inharmonicity=20
  > assuming a plain wire. That=20
  > is if you are tuning to the same frequency. What=20
  > kind of games are you=20
  > playing?=20
  >=20
  > Carl Meyer Ptg assoc=20
  > Santa Clara, Ca.=20
  >=20
  >=20
  > > > David Renaud said: "to calculate rescaling.=20
  > > > Never done this before.=20
  > > >=20
  > > > What is prefered range of tension and % of=20
  > breaking=20
  > > > point at various points along the scale?=20
  > > > .....this is not for the bass strings.=20
  > > >=20
  > > > Old grand or upright piano(both)=20
  > > > 160lbs average??=20
  > > > If Inhar. goes up by increasing tension with=20
  > ! larger=20
  > > > wire is this bad.....or is inhar good at some=20
  > point?=20
  > > > How much inhar. is too much?"=20
  > > >=20
  > > > David,=20
  > > > Inharmonicity works in relation to tension. If=20
  > the=20
  > > > tension goes up, so does Inharmonicity. I was=20
  > told,=20
  > > > by my mentor, "do not exceed 60% of the breaking=20
  > > > strength." Many times this is not possible to=20
  > > > follow, but it's a good rule of thumb. I would=20
  > > > suggest you consider using a=20
  > "loudness/impedance"=20
  > > > formula, as well. The combination of all, in,=20
  > > > hopefully, linear graphs, will give you what you=20
  > > > desire. When running a scale, I try to percieve=20
  > what=20
  > > > the intent of the piano designer/manufacturer=20
  > was.=20
  > > > Most of the time this is apparent, but many=20
  > pianos=20
  &! gt; > > were "copy-cat" types and the "copy" got lost in=20
  > the=20
  > > > translation! Doing lots of scales & putting them=20
  > > > into practice, (ie rebuilds on your stuff<G>),=20
  > is a=20
  > > > big help in coming to the conclusions that will=20
  > work=20
  > > > for you and the pianos you are re-whatevering.=20
  > > > Or.....you can send the scale to someone like me=20
  > or=20
  > > > Del or Ron or...????? and let them figure it=20
  > out.<G>=20
  > > > Best Regards,=20
  > > > Joe Garrett, R.P.T.=20
  > > > Captain, Tool Police=20
  > > > Squares R I=20
  > >=20
  > >=20
  > > =3D=3D=3D=3D=3D=20
  > > Ryan Sowers, RPT Puget Sound Chapter=20
  > > Pianova Piano Service=20
  > > Olympia, WA=20
  > >=20
  > >=20
  > >=20
  > > __________________________________=20
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  > > Yahoo! Mail! is new and improved - Check it out!=20
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  > > _______________________________________________=20
  > > pianotech list info:=20
  > https://www.moypiano.com/resources/#archives=20
  >=20
  > _______________________________________________=20
  > pianotech list info:=20
  > https://www.moypiano.com/resources/#archives=20
  >=20



  Ryan Sowers, RPT Puget Sound Chapter
  Pianova Piano Service
  Olympia, WA


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