<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=iso-8859-1"> <META content="MSHTML 6.00.2800.1458" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff> <DIV><FONT face=Arial size=2>David Renaud said: "<FONT face="Times = New Roman" size=3>to calculate rescaling.<BR>Never done this before.<BR><BR>What = is prefered range of tension and % of breaking <BR>point at various points = along the scale?<BR>.....this is not for the bass strings.<BR><BR>Old grand or = upright piano(both)<BR>160lbs average??<BR> If Inhar. goes up by increasing = tension with larger<BR>wire is this bad.....or is inhar good at some = point?<BR>How much inhar. is too much?<FONT face=Arial = size=2>"</FONT></FONT><BR></FONT></DIV> <DIV><FONT face=Arial size=2>David,</FONT></DIV> <DIV><FONT face=Arial size=2>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.</FONT></DIV> <DIV><FONT face=Arial size=2>Or.....you can send the scale to = someone like me or Del or Ron or...????? and let them figure it out.<G></FONT></DIV> <DIV><FONT face=Arial size=2>Best Regards,</DIV></FONT> <DIV><FONT face=Arial size=2>Joe Garrett, R.P.T.<BR>Captain, Tool Police<BR>Squares R I</FONT></DIV></BODY></HTML>