<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 10 (filtered)"> <style>  </style> </head> <body lang=EN-US link=blue vlink=purple id="role_body" bottomMargin=7 leftmargin=7 topmargin=7 rightMargin=7> <div class=Section1> While I have begun to play with scaling I still rely heavily on experts in the field for guidance—especially in the area of bass scaling.  Fandrich and Nossaman have both been very helpful to me in this area.  Both have also put new designs on S&S Bs that involve adding a tenor bridge, new bass bridge and probably new long bridge as well.  Nossaman’s piano was at the convention.  For the S&S B whose data I included, which was not getting a new soundboard, I made a new bridge cap for the capo section which allowed me to alter the speaking lengths and make them more logarithmic smoothing the tension in that section.  I increased the plain wire diameters in the low tenor to raise the tension and the bass scaling was modified as well.  Adding wrapped strings to the tenor was a possibility but it seemed like six of one when the numbers were run.  Each had its pluses and minuses.   The Knabe is getting new soundboard, long bridge and added tenor bridge.    In playing around with scaling info I look at everything (tension, inharmonicity loudness) but pay most attention to tension, inharmonicity, loudness in that order.  It’s nice to get everything in a smooth curve for everything but tension seems to be the most important.    <div> David Love davidlovepianos@comcast.net www.davidlovepianos.com </div> -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of Alan McCoy Sent: Saturday, October 21, 2006 6:07 PM To: 'Pianotech List' Subject: RE: High tension? Low? Board stiffness? was Hammer Types   Thanks for supplying these numbers David. I'm putting them into Pscale so I can see the graphs and do some experimenting. Would the B be better off with another bridge or just wrapped strings in the low tenor? If changing wire size alone doesn't do the trick, it sure makes for a more expensive rebuild!   In assessing a scale, do you look at loudness/sustain or hammer contact time at all?   Alan   --Alan McCoy, RPT Inland Northwest Chapter Spokane, WA ahm@webband.com <div class=MsoNormal align=center style='margin-left:.5in;text-align:center'> <hr size=2 width="100%" align=center> </div> From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of David Love Sent: Friday, October 20, 2006 12:06 PM To: 'Pianotech List' Subject: RE: High tension? Low? Board stiffness? was Hammer Types <blockquote style='margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'> One of the problems with assessing tension in scales is illustrated by the data below.  The plain wire sections of the original scales on two pianos are listed:  Steinway B and Knabe 6’4”.  You can see that the range within each piano is fairly broad.  Ever wonder why you had such a voicing problem getting the low end of the tenor section to blend well with the bass on a Steinway B?  On the Knabe you can see that the tensions range from a low of 138 to a high of 209 lbs.  Both of these pianos received a bit of scale alteration.      <div> David Love davidlovepianos@comcast.net www.davidlovepianos.com </div> </blockquote> </div> </body> </html>