Grand Regulation – part XVIII


35) The Aftertouch
Apparently not everyone understood what I wanted to communicate about regulating by the dip or blow priority methods. Whether a technician chooses one method or the other, the results will be the same. Some piano technicians get the impression that depending upon whether the dip priority or the blow priority was used, the regulation would come out different. This is not the case. When regulating by the dip priority method, the technician must regulate completely a few sample keys to prove out by aftertouch that the distances for the dip and blow will work. Likewise when regulating by blow priority method. I have stated in the past why I like to use the blow priority method. These reasons will be restated, along with some new ones concerning the use of a key dip block.
Referring back to the grand regulation chart printed in the After Touch post, only two steps affect the blow distance while five steps affect the dip. Of these steps, the key height affects both the dip and the blow. Regulating the key height was step no12 in the 50-point checklist, so it should not interfere when getting to section IV The Touch at step no31. This leaves only the jack height to affect the blow distance, while four steps still affect the dip. These four are the blow, jack alignment, let-off, and the drop. Remember that I always include the correct aftertouch measurement when discussing the dip.
What we want as the end result is…
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