Richard Brekne wrote: > > One of the things we are going to end up needing is a very clear and > simple way of measuring action MOI, comparing to a reference base ala > Stanwoods Smart Chart... or something in the same spirit, and choose > what hammer weights, ratio, and key leading will give us the particular > performance characteristics we are after at any given time. Well Richard, That would be nice but I don't think any simple process will come out of this adventure. I think getting the action reasonably accurate in terms of static balance is useful. It helps to make the action feel even at soft levels of play. Once the action is played with more force many more variables come into play and things become rather messy. To get the action to play from note to note perfectly evenly at loader levels we need to control things like the differences in key stiffness. Looking at the difference between the naturals and sharps I don't think that is going to be practical. I think the benefit to learning this stuff is in guidance with the relative importance of some of the thinks we do to actions. It will help to tell us what to pay attention to and what to leave alone. John Hartman RPT John Hartman Pianos [link redacted at request of site owner - Jul 25, 2015] Rebuilding Steinway and Mason & Hamlin Grand Pianos Since 1979 Piano Technicians Journal Journal Illustrator/Contributing Editor [link redacted at request of site owner - Jul 25, 2015]
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