---- BobDavis88 at aol.com wrote: >I pointed out that the weakness in > this (which in Dale's method used only a fixed, limited portion of > keystroke) lies in the (unpredictably) changing ratios as the action goes through its > motions. I prefer to use the whole keystroke, using a fixed setup of 1.75 > inches blow (only for measurement - I might change it later); .040 aftertouch > (ditto), and an otherwise regulated note, to see what kind of dip it produces. > I think this gives me a more accurate feel for the whole distance ratio, and > has the advantage of using larger movements which I think increase the > accuracy. Exactly. Following the movement through the entire motion cycle, and verifying the desired blow distance and aftertouch is more meaningful that assigning numbers to ratio values for the various pairs of lever arms. Even so, I would not be too critical of Dale's approach. I believe it to be more accurate than calculating ratios from linear measurement. It would be better to compare hammer travel to key travel from "at rest" to contact with the let-off button. And better yet to analyze the full range of motion. While you reserve the right to tweak the blow distance or aftertouch, I am not obliged to do so in cyberspace. I can tweak other variables to get exactly the blow and aftertouch I target. Frank Emerson
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