Grand Regulation: Letoff, Segue, and Drop - Part 1

Grand Regulation: Letoff, Segue, and Drop - Part 1

Music History quiz: What is the single most notable feature in a modern grand action? If we answer “double escapement”, then as piano historians we can high five. But as piano technicians we may be quietly confused. In our training, did we learn how to analyze, trouble-shoot, or regulate double escapement? Well we did, if by double escapement we...
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WNG Dip Tool measuring the dip of a natural key relative to its neighbors.

Grand Regulation: Key Dip - Part 2

Key dip, the Articulator, specifies a note’s depth of stroke and resulting hammer rise. Along with blow distance, letoff, and other geometry, it fine-tunes aftertouch, the follow-through needed for good and comfortable execution of each note. It also lifts the backcheck to its work and the damper to clear its strings. 

Depth of stroke (dip) as a measurement relates to neighboring keys. But the depth of stroke needed to produce a specific hammer rise and aftertouch is a distance traveled, irrespective of neighbors. So, when we use a dip block or a WNG Dip Tool to set dip, our keys need to be level for our dip to be accurate.

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