Young Chang & Weber Grands: Action Clicking/Knocking Upon Quick Key ReleasePaul- Good diagnosis. This is a problem found in Young Changs. The felt on the jack regulating button is too hard, and thumps on the spoon after the note is released. Young Chang used to pay for repairs, but 1997 pianos would be out of warranty, even if they would consider paying under their new management. Pianotek sells a replacement button with a softer felt, ready to install. (They might discount if you buy a thousand or two!) Remove the hammer rail so that you have access to the wippens, grap the button with pliers and turn out the screw with a slotted regulation tool, then reverse the process to install the new button. If you have a combination tool adapter for yiour electric screwdriver, it can go very quickly. Reassemble stack and regulate. You can do other things to stop the noise, but this is the right repair, gives excellent results that the players will notice, and isn't so expensive that the school can't afford it. Ed Sutton ----- Original Message ----- From: Paul Milesi To: PTG CAUT List Sent: Sunday, October 04, 2009 3:05 AM Subject: [CAUT] Young Chang & Weber Grands: Action Clicking/Knocking Upon Quick Key Release I am now responsible for servicing three 1997 Weber grands at Howard U, ranging in size from the 4'11" WG-50 to WG-57 (5'7") and WG-60 (6'1"). These three are now in pretty good shape overall, but need regulation. There are others on campus I haven't seen yet, but have heard they're in bad shape. Tonight I went to a hotel which is a private client of mine and re-visited a 5'2" Young Chang G-157 for the first time in quite a long while. I was struck by the similarities -- same problems I'm having with the Webers, which my research had told me were made by Young Chang in Inchon, South Korea. All these pianos have a "noisy" action! At first I thought it might be worn key bushings or loose wippen or hammer flange screws. But I've now taken the time to eliminate the key and the flanges. The noise appears to be either (1) the repetition or jack hitting the knuckle; or (2) the jack regulating button hitting the stop. The knocking/clicking occurs when any key is released quickly, but not even necessarily all the way up. I believe it happens when the key is released enough to let the jack return. I'm now wondering if a third possibility is the spring in the little hole of the jack? If so, what's the fix? Please, this is driving me crazy! As a pianist and technician, I want to understand what's happening here, and this is frustrating me. I believe these pianos can be regulated to make them a lot better, satisfactory practice instruments, but before I waste a lot of time, I'm wondering if this problem is somehow endemic to these instruments? Can this noise on every key be alleviated? Does it have anything to do with aluminum rails? HELP! Thanks, Paul -- Paul Milesi, RPT Howard University Department of Music Washington, DC University: (202) 806-4565 Home: (202) 667-3136 Cell: (202) 246-3136 E-mail: paul at pmpiano.com Website: http://www.pmpiano.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/caut.php/attachments/20091004/b2c34b1f/attachment-0001.htm>
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