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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KS 33: Mason A Regulating - First Pass
Hammers hung, parts prepped, and action assembled, the regulation must begin with a serious hammerline touchup! A combination of new capstans turned in at speed, wippens with two heights of heels,...
Christopher Brown |
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KS 31: Edge Cases and the Common No-Time Touchup
The same basic bedding strategy will work for both stiff and flexible keyframes. Whatever the starting point, once one glidebolt connects with keybed, bed the rest neighbor-by-neighbor advancing and retreating each to touch...
Christopher Brown |
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KS 29: Where Rubber Meets the Road (Stiff Frame)
I'd like to briefly look again at where keyframe meets keybed. It's the foundation of our regulating, but because not much of what's at play can actually be seen or directly accessed, we are...
Christopher Brown |
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KS 26: Begin Regulating with a Plan
In this discussion of regulating away from the piano, I have left out a lynchpin detail: how to get the action home. Grand actions are awkwardly wide, heavy, and at risk. Ideally, you should...
Christopher Brown |
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KS 24: Regulate Samples / Additional Prep?
This week, I will touch on the importance of regulation sampling and the possibility of further preparation steps based on what you find. Geometry may need tweaking if normal aftertouch requires too...
Christopher Brown |
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KS 23: Hammer Prep On-Rail and Verticality
Whether or not hammers received off-rail prep, on-rail prep comes next. This will include solving overly loose pinning if present (the overly tight having been solved before bedding and sampling). Support shanks with...
Christopher Brown |
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KS 22: Key Steps Index
Key Steps for Grand Regulating (KS) began as slideshow photos for a class. Here is an index of the Key Step blog postings so far: New Offering in the Offing Concerning Dags and...
Christopher Brown |
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KS 21: Hammer Prepping Off-Rail and Pinning
Hammer Prep Off-Rail and Pinning: Now, prep hammers (and wippens if needed). New parts might be considered here, a subject for another day. Same with new materials, rebushing, and other...
Christopher Brown |
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KS 20: Key Leveling on the Bench
Key Leveling on the Bench: In the piano, we made 1 and 88 leveling samples first (where case parts are at hand to consult) and then turned up their Keysteps to...
Christopher Brown |
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KS 19: Recording Spacing Scale and Strike Heights
Recording Spacing Scale and Strike Heights: Setup now complete, record the hammer spacing scale and template heights at strike. The hammer spacing scale comes from the spacing of strings along...
Christopher Brown |
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KS 18: Strike Setup on the Bench
Strike Setup on the Bench: When the keyframe has been bedded on the bench to have the same shape it had in the piano, our strike samples will work. We took...
Christopher Brown |
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KS 17: Bedding Setup on the Bench
Bedding Setup on the Bench: Now that the action is positioned on the bench, shim the backrail to be stable. Do this with front punchings, placed every twelve to fourteen inches....
Christopher Brown |
