Young Chang & Weber Grands: Action Clicking/Knocking Upon Quick Key ReleaseHi,
Have you checked the back rail cloth and the way it is glued down?
Joe Goss BSMusEd MMusEd RPT
imatunr at srvinet.com
www.mothergoosetools.com
----- Original Message -----
From: Tom Driscoll
To: pmc033 at earthlink.net ; pianotech at ptg.org
Sent: Sunday, October 04, 2009 8:56 AM
Subject: Re: [pianotech] Young Chang & Weber Grands: ActionClicking/KnockingUpon Quick Key Release
Paul,
Ditto to the comments so far. I had a client just yesterday with a Samick-10 year old grand. Same symptom. This time it was not the returning jack punching which I have found to be a culprit over the years.Sometimes worn -over eased balance rail holes can contribute to noisy return, but not the case with this Samick.
I needled a sample knuckle with some improvement (After tightening screws of course) Removed a whippen and needled the whip cushion on the same note .
noise was diminished but to my beginning pianist client even with improvement the piano is considered unplayable. She has decided to practice on a Yamaha GH1 that was part of her new home purchase because it does not make this noise. It does however sound like a banjo that has been outside for two years.
I digress here, but I was called to tune both with her intent to sell the Samick (In this case superior to the GH1 in every way) because it had a small chip in one keytop. I explained about the tone-tuning instability of the GH1 and suggested that the GH1 would be the piano to sell and lets not tune it until the weather changes.Here in New England the tenor on these will go 30 cents wild when a cloud passes overhead.
I think she considers the Yamaha to be the better piano because the teacher likes it and I can't completely cure the noise in the Samick. (the teacher is a very nice and has me tune her upright every 10 years--No kidding)
A day in the life.
Tom Driscoll
----- Original Message -----
From: pmc033 at earthlink.net
To: pianotech at ptg.org
Sent: Sunday, October 04, 2009 8:37 AM
Subject: Re: [pianotech] Young Chang & Weber Grands: ActionClicking/KnockingUpon Quick Key Release
Hi, Paul:
I agree with Tom about the knuckles, but you might also look at the jack rest cushions. They get compacted and become noisy. In some of these, I had to needle them with a chopstick voicing tool. Once I actually had to replace them with (yikes!) butt felt squares. You can see if the problem is those rest felts by flicking the jack tips. If they make that sound, you found your culprit. The sound will reverberate with the help of the aluminum rail.
Have fun.
Paul McCloud
San Diego
----- Original Message -----
From: Paul Milesi
To: PTG Pianotech List
Sent: 10/04/2009 1:07:53 AM
Subject: [pianotech] Young Chang & Weber Grands: Action Clicking/KnockingUpon 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
Registered Piano Technician (RPT)
Piano Technicians Guild
(202 ) 667-3136
(202) 246-3136 Cell
E-mail: paul at pmpiano.com
Website: http://www.pmpiano.com
Address:
3000 7th Street NE, Apt. 204
Washington, DC 20017-1402
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