I'm with Joe Goss on this one. The back rails on these pianos can tend to
be noisy, because the keybeds themselves can resonate more that the average
bear. So anything you can do in the way of non-compacted back rail felt is
a plus.
Will Truitt
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Joe Goss
Sent: Sunday, October 04, 2009 12:17 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Young Chang & Weber Grands:
ActionClicking/KnockingUpon Quick Key Release
Hi,
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 <mailto:tomtuner at verizon.net>
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 <mailto:paul at pmpiano.com>
To: PTG Pianotech List <mailto:pianotech at ptg.org>
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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