[pianotech] Young Chang damper upstop rail

[Dean May]

At last, a real question that isn’t beating a dead horse, and nobody
responds. Sigh. :-)

 

The stop rail screws are in slots, simply loosen the screws and adjust up or
down. 

 

Typically, you want the dampers to start lifting when the hammer is half way
to the string. Then you adjust the sustain pedal stop to lift the dampers
slightly below that. When the key is fully depressed, you really don’t want
the sustain pedal lifting the damper off the back of the key, or you can
often feel it in the key. This is possible to do on the Young Chang and
other Asian style damper set ups, but near impossible on the Steinway style.


 

Most sustain pedals are set to lift the dampers much too high. Set it so the
bi-cord dampers just barely clear the strings. They don’t even have to clear
the strings, especially if they have tails that are too long. The Young
Chang has a sustain pedal stop screwed into the keybed right above the
sustain lift rod from the pedal. Just use a pointed regulating tool to turn
it down. If the sustain pedal lifts too much, it will jam the damper levers
against the stop rail and eventually raise it to be too high. 

 

Once this is all set, then you bring the damper stop rail down so that with
the key fully depressed, you can barely lift the damper head against the
stop rail. If you don’t want to mess with re-adjusting all the above, then
adjust the stop rail to accomplish the following.

 

What you do NOT want is: 

1. key jamming the damper lever against the stop rail

2. sustain pedal jamming the damper levers against the stop rail

3. damper stop rail set so high that the dampers bounce against it on fff
blows.  

 

As the stop rail is flexible, you will need to check its adjustment at the
beginning and end of each section. 

Dean

Dean W May                        (812) 235-5272 voice and text

PianoRebuilders.com           (888) DEAN-MAY         

Terre Haute IN 47802           Give us a LIKE on Facebook! Go to
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  _____  

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Tom Rhea, Jr.
Sent: Monday, May 28, 2012 12:34 PM
To: pianotech at ptg.org
Subject: [pianotech] Young Chang damper upstop rail

 

List:

 

I need to adjust a Young Chang (circa 1991) Damper Upstop Rail that has
apparently slipped a bit and is allowing the dampers to rise between ¼ and ½
inch.  Can anyone give me some information on how to adjust the rail or
provide me with a place to look for information on the procedure.  Any help
at all will be greatly appreciated.

 

Thanks,

Tom

 

Rhea Piano Service

Tom Rhea, Jr., Technician

(757) 373-0284

rheapiano at cox.net

www.rheapiano.com

 

 

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