<font color='black' size='2' face='Arial, Helvetica, sans-serif'>
<div>Jim</div>
<div> </div>
<div>It sounds like a similar click I had on a K&C grand, (Samick product). After all sorts of trials and errors, just like you, I found a small piece of hard glue in the damper rail bushing. Every time the damper wire raised up, the wire brushed against the hard glue and clicked. </div>
<div> </div>
<div>Give that a try.</div>
<div> </div>
<div>Good luck. </div>
<div> </div>
<div>Wim. </div>
<div> </div>
<div></div>
<div style="clear: both;">
<div> </div>
</div>
<div></div>
<div></div>
<div style="color: black; font-family: arial,helvetica; font-size: 10pt;">-----Original Message-----<br>
From: Jim Ialeggio <jim@grandpianosolutions.com><br>
To: pianotech <pianotech@ptg.org><br>
Sent: Fri, Jan 4, 2013 4:24 pm<br>
Subject: [pianotech] wooden click at letoff?...reprise<br>
<br>
<div style="margin: 0px; color: rgb(0, 0, 0); font-family: Tahoma, Verdana, Arial, Sans-Serif; font-size: 12px; background-color: rgb(255, 255, 255);" id="AOLMsgPart_0_f819753c-a9b0-4812-9a8e-47f468f6a165">
<pre style="font-size: 9pt;"><tt>An unsuccessful followup on this post from November...
Got back back to this 10 year old Renner action with a recalcitrant
click at and after letoff. There are now 2 of them, F1 & G#1.
I had thought originally that the sound was from the shank assembly, so
I appeared armed and ready for knuckle changing or shank changing.
Removed and re-glued both knuckles, then set about putting in a Dampp
Chaser. Finished the DC and listen for the click...still there...rats.
Swapped a nearby quiet shank, and carefully regulated the swapped shank
so I got the full and proper letoff/aftertouch event. The swapped shank
produced the same click as the original shank. So my original assumption
that the shank was the culprit was too hastily decided. Started looking
around.
-F1 had an anamolous geometry issue. JAck was smacking the jack stop
felt, while all the other notes including the other offending note,
G#1, were just fine at the jack stop felt. Removed half the jack stop
felt from F1...click remained. The jack toe is definitely set at a lower
angle than the other whips, and jack travel is more than the other
whips, but it doesn't seem to be the source of the sound, as I removed
enough felt to leave some clearance.
-looked for flange issues on two whips (turbo). G# cracked on one side
of the flange, but F1 fine.
-Then in messing around, I lifted the dampers with the pedal, and tried
both notes again. This time the click on both notes disappeared! I
suspected a loose lead in the damper levers. Took out the action played
with the offending damper levers, but as time was way past up, and had
to clear out, I couldn't remove the levers to check the weights on this
visit. In moving the levers there was no noise, but I don't think that
is a fair indication of anything, since connection to the back of the
key is their path to the click amplifying keyframe/keybed...though there
is a felt interface beween damper lever and key which I would think
would mitigate at least some noise.
Question?...does this sound like the modus operandi of loose damper
lever weight? Why would damper lever weights click at and after letoff?
Let off does impart a kick to the key, which might rouse the offending
leads, but I'm still somewhat sceptical...but running out of ideas. I
scheduled a DC followup tuning in 3 weeks, so I have an imminent rematch.
Jim Ialeggio
--
Jim Ialeggio        
<a href="mailto:jim@grandpianosolutions.com">jim@grandpianosolutions.com</a>
978 425-9026
Shirley Center, MA
</tt></pre>
</div>
<!-- end of AOLMsgPart_0_f819753c-a9b0-4812-9a8e-47f468f6a165 -->
</div>
</font>