A question about changing core wire and its effect on wrap speaking length 1407mm core .046 .045 Inh .144 .137 Tension 196.86 196.69 B % 36% 38% Wrap D .113 .133 As may be seen making a change without seeing all the parameters is not the best way to go. If someone will send me the speaking lengths, core d, wrap D and unwrapped ends of first and last strings monochord and bichord I will do the calculations and suggested scale modifications if such is in order. I just finished a Kawai GS 50 of about 10 years of age where I Removed the plate and reset bearing used bondo to fill gaps between block and flange Rescaled the piano to bring down too high tension and too low inhar. Rescaled bass because tension was too high and inharmonicity was too low which caused a weak unprojecting bass. Restrung piano and regulated action. The new bass strings are still a little weak but much stronger than original and the treble has a punch lacking in original. A real success story. The original purpose for destringing the piano was because all the bridge pins were wallowing in post holes. With strings off we had unrestricted access to the pins. We dropped AC glue on each side of the pins, one drop at a time until a mantissa appeared then used a tissue to wick up the access. I can tell you now that the tuning is stable, the strings are FAR less faulty and the piano is now in a classroom/performance venue. Send me numbers! Newton nhunt@gandalf.rugters.edu
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