Slow key mystery ....

[J. R. White]

Action-center on the whip-flange, maybe...  These center-pin bushings will
swell up, now and then.

J R W

 

jrwhiteltd at msn.com

(253) 922-2372

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From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Joe And Penny Goss
Sent: Thursday, May 11, 2006 8:12 PM
To: Pianotech List
Subject: Re: Slow key mystery ....

 

Divot in wippen heel?

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

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

From: John M. <mailto:john at formsmapiano.com>  Formsma 

To: 'Pianotech List' <mailto:pianotech at ptg.org>  

Sent: Thursday, May 11, 2006 8:35 PM

Subject: RE: Slow key mystery ....

 

Did you check/replace the jack spring to see that might have been the
problem? As Paul said, the wippen is another cause as well, and I’d use the
lead, baby
unless by removing the action you can increase your paycheck.
E.g., tightening action screws, hammer filing, in addition to checking the
wippen flange friction. (Checking with the customer first, of course.)

 

I think the reason the damper aids in key return is that the damper spring
pushes on the wippen spoon. The problem has to be excess friction in the key
or in the action. Or, the keystick truly needs some extra weight. I’d say
the former rather than the latter.

 

John Formsma

 


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From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of pmc033 at earthlink.net
Sent: Thursday, May 11, 2006 8:09 PM
To: tune4u at earthlink.net, Pianotech List
Subject: RE: Slow key mystery ....

 

Hi Alan:

    Did you determine if the wippen flange was stuck?  It often causes the
key not to return quickly.  Unfortunately, if this is the case, you won't be
able to determine this unless you take out the action and check it.  I vote
for the iffy weights.  Good luck.

    Paul McCloud

    San Diego

 

 

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

From: Alan Barnard <mailto:tune4u at earthlink.net>  

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

Sent: 05/11/2006 5:43:32 PM 

Subject: Slow key mystery ....

 

First visit, new customer, Baldwin Howard spinet.

 

Customer complains that F2 "sticks". Sure enough, it is very slow to return.
Lift sticker off the key end and the action seems lively enough. No problem
with keyslip. Look at back of key and, guess what, someone else tried to fix
this key: It had a jiffy lead nailed to the back.

 

I removed the lead, so I could make a propper repair, for heaven's sake! I
eased the key a bit and then it would return just as fast as its neighbors.
Done ... or so I thought.

 

Tuned and was playing the piano when I noticed F2 "sticking". Further
experiments revealed that it only happened when I depressed the sustain
pedal. Hmmmm....

 

Tried holding the damper off the string with a hook (no pedal pressed) and
the slow return was still evident. Hmmmmm....

 

I could not, offhand, think how the damper, damper arm or spring, would
affect key return like this. I was out of time, running late actually, so I
had to come up with something quick.

 

Simple. I nailed the jiffy lead back in place. Works great.

 

All I can think is that maybe the felt is worn and the spoon is snagging on
it, or something. And I do want to fix it properly next time.

 

Any ideas, oh wise and knowing List?

 

Alan Barnard

Salem, Missouri

 

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