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#651349 - 04/16/03 02:09 PM Key Weighting Methods
Chris W1 Offline
500 Post Club Member

Registered: 09/26/01
Posts: 915
Loc: Boston
I noticed on a new piano the other day that the holes for the weights in the bass were almost identically placed, while on some keys the weights were significantly more recessed into the holes than others. The diameter of the holes was the same.

My question is, are the weights themselves being reduced in thickness and is this a practiced technique in key weighting? The idea being that a company may drill holes and ask questions latter as to how much of each lead, in the given hole size, to install. Please correct if wrong, but I thought that weighting was generally done by selecting 1/2, 3/8, 7/16, etc, sized weights and positioning them someplace along the key length without actually adjusting the thickness of the weight.

Thoughts? Thanks,
Chris W
_________________________
Amateur At Large

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#651350 - 04/16/03 06:43 PM Re: Key Weighting Methods
curry Offline
3000 Post Club Member

Registered: 08/17/02
Posts: 3769
Loc: Hamilton Twp, NJ
Chris,sometimes when weighing off a keyboard you may need to take a lead and trim it to achieve a target touch weight,hence the the larger recess.If you see the same pattern in the keys,you're witnessing patterned or engineered weighting.What make of piano was this? \:\)
_________________________
G.Fiore "aka-Curry". Tuner-Technician serving the central NJ, S.E. PA area. b214cm@aol.com Concert tuning, Regulation-voicing specialist.
Dampp-Chaser installations, piano appraisals. PTG S.Jersey Chapter 080.
Bösendorfer 214 # 47,299 214-358

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#651351 - 04/16/03 10:23 PM Re: Key Weighting Methods
Chris W1 Offline
500 Post Club Member

Registered: 09/26/01
Posts: 915
Loc: Boston
It was a new S&S 'B'. I guess there are a number of ways to trim a soft material like lead, but can't imagine what would be best. Hack saw? Mill file?
_________________________
Amateur At Large

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#651352 - 04/17/03 05:25 PM Re: Key Weighting Methods
curry Offline
3000 Post Club Member

Registered: 08/17/02
Posts: 3769
Loc: Hamilton Twp, NJ
Cleave with a hammer and cheap chisel. \:\)
_________________________
G.Fiore "aka-Curry". Tuner-Technician serving the central NJ, S.E. PA area. b214cm@aol.com Concert tuning, Regulation-voicing specialist.
Dampp-Chaser installations, piano appraisals. PTG S.Jersey Chapter 080.
Bösendorfer 214 # 47,299 214-358

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