[CAUT] Damper pedal noise

[David Ilvedson]

I would add, to make sure the spring is tight.   What makes up cork grease?   

David Ilvedson, RPT
Pacifica, CA  94044

----- Original message ----------------------------------------
From: "Chris Solliday" <csolliday at rcn.com>
To: caut at ptg.org
Received: 5/11/2010 5:29:01 AM
Subject: Re: [CAUT] Damper pedal noise


>glue a piece of leather on the lever where the spring contacts it (clean the lever 
>good first) and use cork grease to lube the contact. That will be the end of your 
>difficulties. (Thanks to Kent Webb for this suggestion).
>Chris Solliday
>  ----- Original Message ----- 
>  From: Barbara Richmond 
>  To: caut 
>  Sent: Tuesday, May 11, 2010 7:47 AM
>  Subject: [CAUT] Damper pedal noise


>  Hi list,

>  I service three older (1910s-1920s) S&S model As that get a similar grunting noise 
>in the damper pedal.  At first, I thought the problem was the hole in the keybed 
>where the pitman goes through.  I modified them all.  The noise came back.  Ahem.  
>The real problem is where the spring presses on the trapwork lever.  There is an 
>indentation where the spring contacts the lever.  I've cleaned, cleaned and lubed 
>with burnished graphite, cleaned and lubed with the white stuff, Prolube?, stomped 
>on the spring to try to make it less strong, and am wondering if the real solution is to 
>sand out the indentation, or change the spring or both. One of the pianos has a 
>pretty big damper thump, so replacing the spring might take care of two problems. I 
>suppose I could try one of each of the options and see what works.  :-)  But, the 
>reality is I've already charged for the pitman modification and I want it to be over 
>and solved.  What has worked for you?  

>  Thanks,

>  Barbara Richmond, RPT
>  near Peoria, Illinois