I've experienced this key noise as well. You can verify it by clipping a small spring clamp on the key at some point, then re-testing. I suppose it could be fixed permanently, but I've never tried it. I have always just reduced it through wippen heel cloth and balance hole service. I wonder if loading the keys up with thin C/A glue would kill the resonance? Or at least raise the pitch of the noise enough to make it inoffensive. Don Mannino -----Original Message----- From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Ron Nossaman Sent: Tuesday, December 23, 2008 8:22 AM To: caut at ptg.org Subject: Re: [CAUT] Thumping Baldwin SF Andrew Anderson wrote: > I was called to tune a Baldwin SF yesterday. It tuned up beautifully > with a nice really clean treble. > > What bothered me was excessive action noise, thumping on every key. > It started to stand out in the midrange so I pulled the action > thinking there must be foreign objects or bedding issues. No FOs but > bedding might be an issue, no glides. > > Is this a typical feature of Baldwins or is this likely a bedding issue? > > Andrew Anderson. I've had them "donk" no matter what I did, usually on release. In these cases, it wasn't bedding. The keys (or something) would ring like xylophone bars. Did it in the piano, and on the bench. Ron N
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