What methods are you folks using to measure to the mm, with any assurance of accuracy, up there in the high treble?
On the pdf recommendation by David I found this line on pg 12 amusing--
"The Grand Piano may be called an English instrument, it having been
invented by Americus Backers, a Dutchman, who resided in Jermyn Street
about 1776. He was a maker of Harpsichords, and on his first application
of hammers, to gain the jingling music of the Harpsichord, then so much
admired, he did not clothe them, but struck the strings with soft wood
or cork; he afterwards clothed them slightly with leather."
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Troubles are Bubbles, and they just float away.
chernobieffpiano.com
grandpianoman@protonmail.comKnoxville, TN
865-986-7720
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Original Message:
Sent: 10-24-2019 09:27
From: William Truitt
Subject: High treble string lengths
Ed, you say "being on the thinner end of the wiring patterns is best". Are you reducing wire diameters; if so to what?
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William Truitt
Bridgewater NH
603-744-2277
Original Message:
Sent: 10-17-2019 10:26
From: Edward McMorrow
Subject: High treble string lengths
In Steinway pianos I notice that the high treble lengths got longer over time as they introduced newer scales. They seemingly went back and lengthened older scales at the top. I wonder if they used to tune to a higher pitch in the 1860-1880's.
When I make a new board or even just recap the bridge, I set 88 at least to 51mm and then measure the longest length that will fit at the bottom of the top section and find by trial and error the semitone multiplier that will get me from 51mm to that length at the bottom. Then I layout the new lengths on the centerlines of the unisons. I use masking tape on the top of the un-notched bridge and treat it like a drafting table. Then use the bridge punches to finalize the pin locations.
Lately I have been setting 88 to 54mm.
I have experimented with how thick to string up there and have come to the conclusion that being on the thinner end of the wiring patterns is best.
It also helps my process that I shape my V-bars to a true V-bar shape, so locating the termination point on the plate is more well defined.
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Edward McMorrow
Edmonds WA
425-299-3431
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