At 9:55 AM 7/10/95 -0600, Kenneth Sloane wrote: Those are great questions Richard. Bring them all to the CAUT Forum where we >can get into them much more thorougly and with several opinions aired. >However, just to comment briefly about actions varying. Steinway has for years >slid their hammer action on the key frame to accomodate strike point, creating >pianos with different key ratios. My suspicion is that the varying key ratios >created much less problems in the "good old days" because hammers were >lighter. Unfortunately, a heavier hammer is not so forgiving to pianos with >"leverage" problems. However, this is just a beginning to what should be >discussed. __________________________ Our different, and sometimes opposite perspectives on geometry really are fascinating. Previously I suggested that "some" technicians might use the high leverage Hamburg shanks because they are more forgiving of other problems. Now Ken points out that light hammers are more forgiving. In fairness, I think that perhaps neither is really correct. Rather, when heavy or light hammers are correctly mated with the high or low leverage shanks respectively, it is a wash. I find that switching leverage parts from low to high with the same hammer will reduce DW about 5 grams. Or conversely, if switching parts from high to low leverage on the same hammer I will need to reduce about .8 to 1.0 grams of hammer weight to achieve the same touch weight. None of these variables should be viewed as an adjustment to compensate for geometry problems, but I'm sure that this is not what Ken meant to imply. I am regretting more and more that I will not be in Albuquerque this month. Ken, do these two actions you fitted to the same piano represent both the low and high leverge styles? That is probably something you intend to discuss, and it would be very interesting to hear your view. Hopefully someone will post us a review of the forum. I must admit that I am still not convinced that there isn't a significant price to pay in inertia for the higher wattage of heavier hammers, even when the strike ratio comes out the same, so I look forward to David Stanwood's book whenever this comes out. Is maximum tonal energy ALWAYS our primary objective anyway? Have we completely lost touch with our pianistic roots? When this discussion started some months ago I understood there to be some agreement that these actions do feel different somehow. Perhaps I misunderstood, but this question has certainly opened up again with different views and it should be a lively discussion in Albuquerque. What happened to the Yardbird? Dennis Johnson St. Olaf College
This PTG archive page provided courtesy of Moy Piano Service, LLC