KS 34: Mason A - The Weighoff
Identifying which keys lift less than target upweight is a sensible starting point for weighing off an action. At the most basic level, any key that will not lift 20...
Christopher Brown |
Chris Brown RPT
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Weighing Off the Grand Action - Part 10
When enthusiasm for a piano rises in the concert pianist, it is a wonderful thing. Their spirit soars, their talents fully manifest, and the listener gets emotional. What can stir...
Christopher Brown |
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Weighing Off the Grand Action - Part 9
Plan by Number? The Grandwork System favors trial-and-error and go-nogo procedures over formulas and numbered measurements. In general, numbers and math empower designers and manufacturers but slow down piano technicians. So, why feature numbers in...
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WEIGHING OFF THE GRAND ACTION – Part 8
The mechanics of a grand action are brilliant, a series of levers that reaches inside the piano while converting finger force into a hammer force that can play strings with...
Christopher Brown |
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WEIGHING OFF THE GRAND ACTION – Part 7
How do we become professionally conversant with the things we think we know? Experience will prove or disprove many details over time but without a concerted effort (and a bunch...
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WEIGHING OFF THE GRAND ACTION - Part 6
Levers: Hammer weights and travel parameters get amplified or de-emphasized depending on the geometry between keytop and hammer crown. Generally, weight reduction at the key equals loss of hammer rise,...
Christopher Brown |
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WEIGHING OFF THE GRAND ACTION - Part 5
How much can weighoff help grand action playability? Sometimes, as with poor action geometry, weighoff will not help unless problems are corrected first. I recently I found myself so challenged...
Christopher Brown |
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WEIGHING OFF THE GRAND ACTION - Part 4
Pragmatics: We weighoff a key to help its note function properly. With good geometry, good regulation, and appropriate friction in place, key balancing fine tunes how well a note will...
Christopher Brown |
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A Baldwin R Tells Me What to Do
Last week I regulated a Baldwin R baby grand, vintage 1950, which featured five interesting points in an apparently standard-issue regulation. 1. Hidden studs, including the two outside ones –...
Christopher Brown |
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WEIGHING OFF THE GRAND ACTION – Part 3
Method and Style: I recommend the pick-and-add method of weighoff. Key balancing weights are used in pairs, upweight on the bottom, pairing weight on top. Add a pair (downweight) to...
Christopher Brown |
