Yes it does. I had to fix a Wurlitzer and several Young Changs. The problem can also be present in Webers, Piano-Disc pianos from late 80's and early 90's. The following came from documents published by YC at the time when it was a warranty issue.
During the early to mid-90's Young Chang Korea manufactured grand pianos for Wurlitzer,
Weber and Pianodisk, as well as a few other stencils for large dealers. They all have the
possibility of "growing action brackets". The metal brackets that the action rails are connected to
actually expand over time. Blocking hammers1 wide action spread or unstable regulation are sure
signs. Only Young Chang brand pianos or stencil pianos sold by Young Chang America are
covered by our warranty.
The brackets are gray and die-cast from an aluminum alloy. The vendor mixed the alloys
incorrectly so that the metal becomes unstable. To our customers1 I compare it to putting too
much yeast in a bread dough mix. It generally takes from 2 to 5 years to start showing up.
Do notjudge the bad parts by appearance, because they may not show any signs of a problem. Remove
them all and throw them away... far away
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James Kelly
Owner- Fur Elise Piano Service
Pawleys Island SC
843-325-4357
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Original Message:
Sent: 05-29-2021 16:40
From: Peter Grey
Subject: Young Chang Action Brackets
Does anyone know if the action bracket issue extends to Wurlitzers made by Young Chang?
Also, what about YC verticals? Ever see it there?
Pwg
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Peter Grey
Stratham NH
603-686-2395
pianodoctor57@gmail.com
Original Message:
Sent: 05-29-2021 11:25
From: Paul McCloud
Subject: Young Chang Action Brackets
vincentchoi@pal-sound.com. He's the contact for Young Chang brackets.
Paul McCloud
Derek Seville
I'm looking for young Chang action brackets. Does anyone know where I can guy them? Our local dealer has been saying they are out of stock for the last year
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Derek Seville
Hemet
Original Message:
Sent: 5/29/2021 11:23:00 AM
From: Derek Seville
Subject: RE: Young Chang Action Brackets
I'm looking for young Chang action brackets. Does anyone know where I can guy them? Our local dealer has been saying they are out of stock for the last year
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Derek Seville
Hemet
Original Message:
Sent: 07-23-2019 17:27
From: James Kelly
Subject: Young Chang Action Brackets
I encountered a Young Chang model G-175 yesterday that had at least a dozen notes blocking the strings. i immediately thought it may be an expanding action bracket issue. Visually the action brackets do not look like they are collapsing or cracked but maybe they dont always show it. i did not measure the action spread but my concern is that once I start regulation I'll own the piano for better or worse. The July PTG Journal article states blocking hammers is one of the first signs of an action bracket issue. The brackets are silver/gray and my recollection is that replacement brackets are gold. The serial number is 109849 dating it to 1997. The majority of expanding action brackets were 1990 to 1994, some in 1988 and some in 1998 . Perhaps the safe thing to do is to order new brackets from YC , charge the customer for the shipping, install of new brackets and the needed action regulation and not risk it. Any thoughts ?
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James Kelly
Pawleys Island SC
843-325-4357
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