Hi Avery, I am the list administrator this week. Since Phil is not subscribed to pianotech, the reply that he attempted to post bounced. He asked that I forward his response to you and pianotech which I did. So, you see, you have indeed heard back from Phil. :) Kent On Monday, June 9, 2003, at 03:28 PM, Avery Todd wrote: > Hi Kent, > > I appreciate your response but why was it sent to you and > not to me. I sent Phil an e-mail and so far, haven't heard > back from him. > > At 01:37 PM 06/09/03 -0500, you wrote: >> Begin forwarded message: >> >>> From: "Phil Glenn" <Phil@yca.tzo.com> >>> Date: Mon Jun 9, 2003 12:53:01 PM US/Central >>> To: <pianotech-owner@ptg.org> >>> Subject: [admin] RE: Young Chang Action Brackets >>> >>> Please post this reply. >>> >>> >>> Thanks, >>> Phil >>> >>> Thanks Avery, >>> >>> I'll answer each of your questions, though basically any YC >>> manufactured grand piano dating >>> from about 1990 to 1997 has the possibility of this occurring. If >>> you see anything that is weird or unstable, >>> then you'll probably need to exchange the brackets. It will usually >>> start to show up between two to five years from new. >>> Very rarely do you find any visual defect on the bracket itself. >>> >>> 1. What I DIDN'T see was everything I've read about it. I was able >>> to easily pull the action out; the drop screws didn't scrape on >>> the underside of the pin block, etc. >>> These severe symptoms only occur on very advance cases and >>> not always then. >>> The only predictable thing about the growing >>> brackets is that they are unpredictable... and the hammers >>> block. >>> >>> 2. Besides the blocking, all I could see was that the underside of >>> the drop screw was AWFULLY close to the front edge of the wippen >>> buckskin and the jacks were mostly WAY too far back under the >>> knuckle.> >>> As the brackets expand, it pulls the hammer rail away from >>> the wippen rail, >>> thus the jack is moved back from the roller. >>> >>> 3. Besides measuring the spread (which I don't know what it's >>> supposed >>> to be) how can one know for sure?> >>> Measuring the spread is the only technical way to know, but >>> then the spread could be off for other reasons. >>> The affected pianos had a spread of 112.5 mm pre-1991 and >>> 113.5 mm post 1991. >>> It doesn't take much to make a huge difference (1 or 2 >>> mm) but, >>> I had a tech the other day tell me that the spread on his >>> piano was 119. >>> >>> 4. It's had water leak/damage in the middle and 1st treble section >>> and >>> the strings and plate are rusty there. I can also see evidence of it >>> by stains on the action rails and a few of the shanks.> >>> Water damage could cause the keyframe to warp, imitating the >>> bracket symptoms, >>> though the spread shouldn't change. But... if your going to >>> be doing major work >>> to a piano within the affected range, you may as well throw >>> in a set of brackets. >>> >>> >>> 5. I just don't want to do the "growing action brackets" thing >>> without >>> being sure. Any ideas how I can BE sure? Thanks.> >>> Thanks for your concern. As this is a major warranty >>> situation, we have a need >>> to keep expenses at a minimum. However, the customer is our >>> greatest responsibility. >>> We don't want unstable pianos in the field when there is a >>> very easy fix. >>> When in doubt, seek me out. >>> I receive a paycheck because I am here to help you. >>> >>> The pianotech list is a great tool and resource, I am sorry I can't >>> afford the time to monitor the internet each day, >>> but I do try and answer all of my e-mails every morning. >>> >>> Sincerely, >>> Phil B. Glenn, RPT >>> National Service Manager >>> Young Chang Acoustic Pianos >>> (800) 874-2880 x110
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