James -
Your first problem is that you're up at this at 12:24 AM.
Second, that you think that there could be no question about bore because you sent them out or duplication. How would they have done that i all the hammers lost or had otherwise deformed felt?
Meanwhile, you didn't bother to send some basic numbers: string height, hammer flange centerpin height, hammer bore in bass and treble, hammer blow, key dip...?
What else was done with this flood victim? Or, or that matter, what else happened to it? Was it rebuilt? Is it thoroughly dried out?
As a rough starting point for establishing key height, they have to fit under the fall board and below the key slip. The naturals have to have sufficient clearance with the top of the keyslip with a 10mm key dip. They have to have adequate balance rail pin protruding from above the keys and have sufficient front rail pin projecting into front mortise. Ideally, you'd have room under balance cloth for some amount of paper punchings and likewise at the front rail.
The glides at the front should start out turned down and be used to bed the front rail, I believe.
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David Skolnik
Hastings-on-Hudson NY
914-231-7565
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Original Message:
Sent: 06-09-2017 00:23
From: James Kelly
Subject: Huntington Grand Regulation - trying to get close letoff
I replaced all of the hammers, shanks and flanges on a Huntington grand piano and am trying to set samples to begin action regulation
Samples where sent out for duplication so there is no question about the bore, knuckles etc . I adjusted the capstans to get get the shanks off the rebound rail felt, added some strength to the rep springs, cleaned and polished keypins, adjusted backcheck , adjusted letoff and drop etc but my problem is I can not get letoff anywhere close to the string at present it is like 1/2 inch away. I did not check the glide bolts but I did notice that the piano has about a half dozen glide bolt studs coming up through the front of the keybed that could/should/would lift the keyframe at the front rail and change things. I noticed a feature called the patented touch regulator that was used in Mehlin pianos to regulate touch depth. Does anyone know what these studs do and how to adjust them
.
Howe can I get closer letoff in this action . I did not change out any bushings or punchings and perhaps I have to experiment more to get the proper key heights and depths. I have not found any starting point regulation specs. Unfortunately the piano was in a high humidity
situation after flooding and all of the hammer felts peeled off the moldings. Maybe I need to look into replacing the keyend felt ????
I have no idea what condition the piano was in before I got to. The action looked like it had been hardly touched and only had moderate wear. I am aware of some articles published in 2000 (may June,Aug Sept) on action elevations and will try finding them on my Journal CD collection
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James Kelly
Pawleys Island SC
843-325-4357
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