[pianotech] Young Chang damper upstop rail

[Dean May]

It’s always helpful when asking for solutions to give us all the symptoms.
That symptom does not sound like damper stop rail. The damper stop rail
limits how high the damper can travel and has nothing to do with how the
damper seats. 

 

I would first check the sustain pedal adjustment to make sure there is a
little lost motion in the pedal before that C4 damper starts to lift. Then
check to make sure there is movement in the C4 key before the damper starts
to lift. If adequate lost motion exists in both places, then check to make
sure the damper is seating properly on the string, The head may be tilted
forward or backward so that only one corner of the damper is contacting the
string. On a fff blow there may be too much energy in the string for such a
contact to fully dampen. Make sure that there is damper felt on both the
front and back sides of the damper head. Sometimes one of the blocks falls
off. Then make sure that nothing has been spilled on the damper to make the
felt hard. 

 

Dean

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

PianoRebuilders.com           (888) DEAN-MAY         

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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 4:54 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Young Chang damper upstop rail

 

Wim

 

Thanks for your comment.  I was unsure of what was happening since I don’t
service grands all that much and have no experience with Young Chang.  The
church pianist plays rather exuberantly, shall we say, and had complained
that one of the notes (“middle C”) was ringing after the end of certain
loudly-played hymns.   My description of the problem was an educated guess
after listening to the symptoms and looking at a Young Chang schematic of
the instrument in question.

 

Your description – and that from Dean May – will go a long way toward my
resolution of the problem.

 

Many thanks to all from a fledgling neophyte – but learning fast –
technician.

 

Tom

 

Rhea Piano Service

Tom Rhea, Jr., Technician

(757) 373-0284

rheapiano at cox.net

www.rheapiano.com

 

  _____  

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of tnrwim at aol.com
Sent: Monday, May 28, 2012 4:34 PM
To: pianotech at ptg.org
Subject: Re: [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

Tom

 

Your description is confusing. You say the damper upstop rail has slipped,
but that the dampers rise too far. If the damper upstop rail has slipped,
the dampers would not rise at all. I believe what has happened is that the
damper pedal has lifted all damper upstop rail too high. So there are two
steps to solving the problem. 

 

First you need to adjust the travel of the damper pedal so that when you
press a key with the damper pedal depressed, the dampers do not move. The
adjustment is a capstan like screw between the the trap lever and the bottom
of the keybed. 

 

Next, you need to adjust the upstop rail. The easiest way to adjust the
upstop rail, is to press 4 or 5 black keys and clip a clothes pin on the
damper heads, keeping them  raised up. Remove the action, and adjust the
upstop rail to the same height as the raised up dampers.  

 

Wim 

 

 

-----Original Message-----
From: Tom Rhea, Jr. <rheapiano at cox.net>
To: pianotech <pianotech at ptg.org>
Sent: Mon, May 28, 2012 6:46 am
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

 <mailto:rheapiano at cox.net> rheapiano at cox.net

 <http://www.rheapiano.com/> www.rheapiano.com

 

 

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