clicking at key fram shift pin on Estonia grand

[Dean May]

Look at the dags at the rear of the keybed that hold the back of the action
down. Sometimes there will be brass screws in them that the action butts up
against. The factory uses those screws as a stop when putting the action in
and out so they don't have to use the cheek blocks. It should be a part of
every new piano prep to either remove those screws or turn them in several
turns. If left alone, they often cause the keyframe to bind during the
shift. I don't know if Estonia uses them or not.

Dean

Dean May             cell 812.239.3359
PianoRebuilders.com   812.235.5272
Terre Haute IN  47802

-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]On Behalf
Of Mark Ultsch
Sent: Saturday, June 19, 2004 8:31 PM
To: pianotech
Subject: clicking at key fram shift pin on Estonia grand

Hi folks,

A customer has a newer Estonia grand that softly clicks at the bass
end during shifting of the action.  It appears that the noise is
coming from the key frame shift pin hitting the side of the guide in
the bass cheek block.  I saddled a small piece of paper around the
notch of the guide to take up some of the clearance between it and the
pin and the problem is temporarily solved.

My question is that it appears that the fit between the pin and the
guide doesn't feel like it is any greater on this piano than any
other, yet the pin "slamming" into the wall of the guide makes it
click.

During action shifting the lever does seem to torque the action
front-to-back at the bass end, but it doesn't seem too excessive.

Why might this piano make a click when others don't, but more
important:  What's a good way to fix it?

Thanks for your contributions!

Mark Ultsch
Assoc., Madison Chapter


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