[pianotech] Another Damper Puzzler

[Dean May]

You get the noise by rubbing your finger on the felt, the same noise (though
reduced) with a mute strip between the felt and capstans. I think this is a
pretty strong clue it is not the felt to capstan connection. I suspect
something in the lift tray is being excited, probably in the pivot
structures. Have you had the tray out to examine these closely?

Dean

Dean W May                (812) 235-5272

PianoRebuilders.com    (888) DEAN-MAY

Terre Haute IN 47802


-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Ken & Pat Gerler
Sent: Thursday, March 04, 2010 8:47 AM
To: pianotech at ptg.org
Subject: Re: [pianotech] Another Damper Puzzler

Ron,
Another attempt I didn't note.  I lifted the dampers, blocked them up with 
the sustenuto pedal and then put a muting strip over the felt in the lift 
tray and then tried using the damper pedal - the sound was reduced (which as

I am explaining this and have had 12 hours to think about it, says the 
capstan screws need to be burnished as they must have "something" on their 
surface that is causing the "extra" sound).  I did just rub my finger across

the felt in the lift tray and I could hear the same sound.

Ken G.
----- Original Message ----- 
From: "Ron Nossaman" <rnossaman at cox.net>
To: "Ken & Pat Gerler" <kenneth.gerler at prodigy.net>; <pianotech at ptg.org>
Sent: Wednesday, March 03, 2010 5:00 PM
Subject: Re: [pianotech] Another Damper Puzzler


> Ken & Pat Gerler wrote:
>> Hello all,
>> I already ran this by Mark Wisner and he has never had a complaint like 
>> this --  It is RX-2G (5'10") grand.  And if everything is quiet, slowly 
>> pushing down on the damper pedal, it sounds like you are slowly running a

>> brush across the top of a snare drum.   I have isolated it to the 
>> junction between the under lever "capstan" screw and the damper lift tray

>> felt.  The sound is not there if the damper are held up with the 
>> sustenuto pedal.
>
> That doesn't sound right. I'd slide sheets of paper between the lifter 
> felt and capstans and try again. If the sound is still there, that ain't 
> it.
> Ron N