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#641025 - 09/07/01 08:18 PM
Sudden stiff centres
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Junior Member
Registered: 09/07/01
Posts: 16
Loc: UK
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The section on Steinway 'verdegris' prompts me to mention the mysterious stiffening of centres occasionally on Yamaha pianos. I have experienced hammer-flange centres suddenly stiffening so much that the hammer shank stays raised. On removal of the pin for re-centering, a black carbon-like material appears to have been released. Any explanations?
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#641026 - 09/07/01 09:08 PM
Re: Sudden stiff centres
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3000 Post Club Member
Registered: 06/01/01
Posts: 3394
Loc: Orlando FL
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Is it possible the actions were lubricated with graphite at some time? Graphite can gum up over time, and would look like black carbon.
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www.APerfectpiano.comPiano Technician serving Orlando and Central Florida 1927 Steinway M, rebuilt in 2005 1929 Steinway A, in process of repair
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#641027 - 09/07/01 11:11 PM
Re: Sudden stiff centres
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500 Post Club Member
Registered: 08/19/01
Posts: 635
Loc: WHITE BLUFF (Nashville area) T...
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Just my 2 cents worth: I agree with Bob. I see a lot of Yamahas, so if this was a Yamaha phenomenon, it would be showing up. Definitely could be graphite.......Sam
_________________________
Since 1975; Full-time piano tuner/tech in Nashville; Lacquer and polyester specialist. www.SamLewisPiano.com
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