37 steps---delayed response

[David Nereson]

    I guess that's why I prefer Kawai's circle of refinement to Yamaha's 37 steps, in the circle of refinement you are seeking to regulate/adjust/refine as needed to bring the action to the point of functioning properly rather than  following a list of steps some of which may seem/be superfluous. In the circle of refinement it is not unheard of to repeat/redo and adjustment after performing some of the other adjustments, it's considered another step on the road to refinement.

    Mike

     
        Yamaha has a "circle of refinement" as well, tho' they may not call it that.  If you attend the Little Red Schoolhouse, in conjunction with thje 37 steps of regulation, they also point out a Circle of 7 Steps which is a circle of refinement to be performed after keys are leveled, parts aligned, and the 37 steps have already been gone through to ensure that there is at least some drop and at least some repetition spring strength.  The 7 steps are:  1. Blow (hammer line), 2. Let-off, 3. Drop, 4. Dip/Aftertouch, 5. Back check (checking distance from string), 6. Repetition Spring strength ("hammer rise"), 7. Jack height (which is really Repetition Lever Height relative to the jack, or "winking the jacks").
        The last 9 of the 37 steps (dampers, sostenuto, soft pedal, etc.) can be done after this refinement circle.
        --David Nereson, RPT   
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