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#2086884 - 05/22/13 03:42 PM Bass strings in Acrosonic
PGO Offline
Junior Member

Registered: 02/24/13
Posts: 3
Loc: MI
I tuned a '38 Baldwin Acrosonic today and a few bass strings (two set only)varied up as much as 35 cents and down as much as 30 cents. The pitch would eventual return to normal (minus my sanity)but only after 7-10 seconds. Any idea why this is occurring?

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#2086966 - 05/22/13 06:03 PM Re: Bass strings in Acrosonic [Re: PGO]
Adypiano Offline
Full Member

Registered: 05/02/12
Posts: 49
Loc: Surrey, UK
Sounds a bit like the string isn't sliding across the top of the bridge properly - different tension in the non-speaking portion of the string to the speaking part, which is taking a few seconds to equalise...?
_________________________
Started work at the Blüthner piano re-building workshop in Perivale, UK, in 1989. Self employed since 2000. Learning something new about pianos every day... smile

http://www.hamiltonpianos.com/

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#2087354 - 05/23/13 11:52 AM Re: Bass strings in Acrosonic [Re: Adypiano]
SMHaley Offline
500 Post Club Member

Registered: 05/06/13
Posts: 984
Loc: Seattle
How's the the pinblock doing in that region? Yep, also check the bearing points for excessive friction preventing good string rendering.
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PTG Associate
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Chief Instrument Technician, Chancel Arts
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Baldwin F 1960 (146256)
Zuckermann Flemish Single

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