[pianotech] SnS M

[Susan Kline]

Yes, unfortunately that is original. They changed over to the 
plastic/delrin/whatever a few years ago. The first I knew of it was 
trying to get a click out of a repetition in a rental D. I chased it 
down to the coil whacking against that post.

I believe I heard the suggestion from a Steinway person to twist the 
coil of the spring to get rid of this, Personally, I prefer the old 
system, which if I remember right was bushing cloth with a center pin 
through it. Damper cord would probably work -- it certainly has held in 
plenty of springs in other actions.

It seems to me that people designing pianos have a fond illusion that 
just because teflon is low friction, it's also quiet. But it does not 
absorb or deaden sound at all, nothing like the action cloth or bushing 
cloth it replaces. (Think of all the tiny little squeaks from spinet and 
console damper springs when they stopped putting in the cloth lining at 
the end of the lever and just sprayed on green teflon.) Since the noises 
which get going with it take awhile to show up, presumably the designers 
continue to think that teflon is noise-free.

Susan

On 5/23/2012 2:29 AM, David Boyce wrote:
> Wow, if that's some kind of thin pllastic rod, surely it can't be 
> original?
>
> Surely too there is some risk of noise arising from the working of the 
> spring coils against the relatively hard surface of the plastic?  What 
> should be in there is Flange Cord, the correct material.  It's a 
> special material with a braided sheath covering a bundle of threads 
> inside.  I will try and send a pic shortly.
>
> Best regards,
>
> David.
> www.davidboyce.co.uk
>
>> Thanks Wim,
>> Here is the pic for the plastic cord.
>

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