Is it only one key or all? If only one you have an example of a correctly working assembly on either side (hopefully). Play the game: What's wrong with this picture? The answer should be apparent. Dip, Blow, Checking, foreign objects, Broken - unglued parts as Joe just mentioned - . Let the piano tell you what is wrong because as we all know the piano never lies. It just fibs a little. Tom Driscoll _____ From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Joseph Alkana Sent: Tuesday, August 18, 2009 3:12 PM To: pianotech at ptg.org Subject: Re: [pianotech] double-striking hammers on chinese uprights Is the jack glued solidly to the whippen? Joseph Alkana RPT (Retired) _____ From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Britney Kirk Sent: Tuesday, August 18, 2009 7:08 AM To: pianotech at ptg.org Subject: [pianotech] double-striking hammers on chinese uprights What causes a hammer to double-strike on an upright? When I play the key, it feels like there is an extra force at the beginning of the keystroke. When the keystroke is at the halfway point, the hammer has already hit the string and started to come back. When I have finished my keystroke, the hammer has returned and hit the string once more. I have tried re-pinning the hammer flange and doing a finer regulation. The only thing that seems to help-- but not actually solving the problem, and creating other problems-- is setting let-off extremely far from the string. Any ideas? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20090817/05e64bd8/attachment.htm>
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