I've encountered many Yamaha C series with migrating tuning pin bushings. It does make for a very unstable tuning. I complained to Yamaha about it some 20 + years ago. They suggested a dab of CA glue in the bushing hole to secure it. Seems to work. Supposedly, they have fixed it since........ (?) ... -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Laura Read Sent: Thursday, September 03, 2009 3:35 PM To: pianotech at ptg.org Subject: Re: [pianotech] bushings migrating I had my first encounter with a C3 the other day, also with some concern. I replaced 2 broken strings in the upper treble and found at least 6 others in the same area that had previously been replaced. Is this an inherent problem in the C3? What might be causing it? Laura Read -----Original Message----- From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Bruce Browning - The Piano Tuner Sent: Thursday, September 03, 2009 8:16 AM To: pianotech at ptg.org Subject: [pianotech] bushings migrating List, Any suggestions please: 1. I have recently taken over tuning of a Yamaha C3, with unstable tuning in some notes of high tenor/low treble. Several broken (assume??) strings had been replaced. The plate bushings seem to have migrated up the tuning pin. Looks very strange, making it difficult to apply CA. 2. Yesterday I replaced a broken treble string pair. Plate bushing migrated out with the pin when backing out, but did not go down when pulling up pitch. Hench bushing is high on pin, almost touching coil. Tuning is not stable. I have not had this problem on Upright pianos with plate bushings. What is going on? How can I rectify this situation? Bruce Browning The Piano Tuner. _____ avast! Antivirus <http://www.avast.com> : Outbound message clean. Virus Database (VPS): 090903-0, 09/03/2009 Tested on: 9/3/2009 7:02:09 PM avast! - copyright (c) 1988-2009 ALWIL Software.
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