Delwin D Fandrich wrote: > Frank, > > Rarely, if ever, has 1/7 of the speaking length actually been used as a > real life hammer strike point. This ratio has its origins in some of > John Broadwood's work. Typically, a piano of that era (1912) will have a > strike point at approximately 1/12th to 1/16th of the striking point at > C-88. This will change more or less uniformly down through the scale and > end up somewhere around 1/8th in the lower third of the scale. From > there down the ratio will probably be somewhere between 1/7.5 to 1/8.5. > There are always exceptions, but this should provide a good starting > point. > After a little measuring and a little math, I have confirmed the truth in the above numbers. On three pianos I measured, the ratios varied all over the place, but none was 1/7. Your method sounds very logical, I will be using it with some minor variations. I guess the bottom line is to hang the hammers where they sound the best, don't hit anything they're not supposed to, and where they give a reasonable touch weight. Thanks - Frank Weston
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