[pianotech] stuck keys after one hour of playing

[Ken and Sharon Schneider]

Barbara,

My guess is that this is a Young Chang with the swelling flange bushing
cloth. A very easy way to determine this is to pull 4-5 hammers out of the
mid range and do a swing test to determine how much friction there is. If
you are only getting 2-3 swings,(instead of 6-7)  Protec might get you by
for a while but pinning is definitely the only way that it is going to stay
fixed.

Ken Schneider

 

-----Original Message-----
From: Joe And Penny Goss [mailto:imatunr at srvinet.com] 
Sent: Tuesday, March 31, 2009 5:55 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] stuck keys after one hour of playing

 

Hi Barbara,

It can be any centerpin. Prior to your appointment date it saves time if the
client will place a small piece of masking tape or part of a bandaid at the
back of the keys that are showing the problem. Then you can zero in on those
that might work when you arrive. Also you might ask them to play as they
would usually do an hour prior to your arrival. Otherwise you will be
looking for a center pin in a hay stack. >g<

The cause is usually tight centerpins caused by graphite or too much glue in
the felt and no amount of GJ,  Proteck, Vodka what ever will solvent the
situation Only repinning will work. Well come to think of it the Vodka might
mellow you out.

Look for a browinsh or black on the outside of the flange, and take a close
look at the removed pin . Where the felt has rubbed will be a different
sheen than the center of the pin.

Joe Goss RPT
Mother Goose Tools
imatunr at srvinet.com
www.mothergoosetools.com

----- Original Message ----- 

From:  <mailto:piano57 at comcast.net> Barbara Richmond 

To:  <mailto:pianotech at ptg.org> pianotech 

Sent: Tuesday, March 31, 2009 3:01 PM

Subject: [pianotech] stuck keys after one hour of playing

 

Howdy,

 

I just got a call from a fellow who has an almost 10 year old Wurlitzer
grand (I think it was made by Young Chang--correct me if I'm wrong.).  He
said he's been having some trouble with keys starting to stick <after> he's
been playing for a while--like an hour--and then they just won't go.  We've
made an appointment for me to come out and have a look.  I will check the
action centers & keys for friction levels, of course, but this seems sort of
unusual--well, I've never been witness to such behaviour, anyway.  Has
anyone else experienced such symptoms?

 

Thanks,

 

Barbara Richmond, RPT

near Peoria, IL

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