Thanks Karl,
Somehow I had tried to visualize something like the effect of carbon paper when spacing and voicing hammers at the piano. I didn't see you were manually marking string grooves.
As a teenager all I was allowed to do was bench regulate when the piano was not in the shop. The regulation table and affixed letoff jig designed, very well I might add, to level keys and set key dip, but not space prehung hammers, seemed ingenious, but in light of bedding the keyframe, when the piano was in the shop, it seemed less so.
Whenever possible I work at the piano with the action on the keybed; everything seems to change there. Your marks will do more for hammer spacing than the letoff bar for regulating if the distinctions between let off table and key bed are not accounted for.
I've seen impressive reg tables though, in person and otherwise. Any information about duplicating the conditions facing a keyframe in the piano and on the regulation table would be invaluable.
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Benjamin Sloane
Cincinnati OH
513-257-8480
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Original Message:
Sent: 03-11-2017 16:04
From: Karl Roeder
Subject: installing pre-hung hammers, shanks, flanges
Mr. Black,
I use a regulation jig in the shop that I got from Brooks Ltd. It's called " The Rack" . It's built so as to allow you to simulate the string height away from the piano. I've attached a photo of it ready to use rough regulating new parts on a model L. Also attached are some pictures showing how the rack and the action are marked with tape and some lines on the workbench so that I can get everything back in the same position when I need to. I marked the string positions using the grooves on the old hammers prior to removing them. As to alignment in the bass you will want to be very careful in spacing and "casting" the hammers so that there is no interference between the tail of the hammers and the head of the neighboring hammers. I really love this jig but will warn you that I always have a few hours of spacing and fitting to the strings when I get back to the piano no matter how careful I am on the bench.
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Karl Roeder
Pompano Beach FL
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Karl Roeder
Pompano Beach FL
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Original Message:
Sent: 03-11-2017 15:58
From: Karl Roeder
Subject: installing pre-hung hammers, shanks, flanges
Missed this one on the first upload. Sorry.
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Karl Roeder
Pompano Beach FL
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Original Message:
Sent: 03-11-2017 15:49
From: Karl Roeder
Subject: installing pre-hung hammers, shanks, flanges
Mr. Black,
I use a regulation jig in the shop that I got from Brooks Ltd. It's called " The Rack" . It's built so as to allow you to simulate the string height away from the piano. I've attached a photo of it ready to use rough regulating new parts on a model L. Also attached are some pictures showing how the rack and the action are marked with tape and some lines on the workbench so that I can get everything back in the same position when I need to. I marked the string positions using the grooves on the old hammers prior to removing them. As to alignment in the bass you will want to be very careful in spacing and "casting" the hammers so that there is no interference between the tail of the hammers and the head of the neighboring hammers. I really love this jig but will warn you that I always have a few hours of spacing and fitting to the strings when I get back to the piano no matter how careful I am on the bench.
------------------------------
Karl Roeder
Pompano Beach FL
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