[pianotech] hammer return noise

[Ron Nossaman]

Gene Nelson wrote:
>  
> 
>     ----- Original Message -----
>     .
> 
>     Is is possible to isolate the key by lifting the hammer and putting
>     some lead on the end of the key? Then you might be able to tell if
>     it is the the key which makes the noise by slapping down on the back
>     rail cloth. Sometimes, a layered back rail cloth can be quieter -
>     you may consider that if this is the source of the noise.
> 
>     regards,
> 
>     Jurgen Goering
>     Piano Forte Supply
> 
> 
>     Jurgen, this is a great idea - thank you. It is on the to-do list
>     for today.
>     I will post later what was done and if there was any success.
>     Gene

I've been out this morning, and I see Jurgen beat me to it. 
I've had key sets that "doinked" like xylophone bars. Taking 
the stack clear off and pushing down quickly on the capstan 
would almost make the same noise as with the stack on.  The 
layered back rail cloth is a good thing to try, as it helps. I 
never did find a complete cure, and haven't been cursed with 
one for a while to try again. Was the noise there before the 
key buttons were changed?
Ron N