B 458198, string deflections

Kent Swafford kswafford@earthlink.net
Thu, 22 Sep 2005 05:28:54 -0500


The plate has not been out. The recent work was mainly "Teflon  
eradication", in other words, replacing the action parts of the piano  
(which dates from '79). Since this required a new back action and  
dampers and the piano tuned poorly due to wildness, I went ahead and  
restrung, dressing the capo and adding CA around the bridge pins, so  
far working a big improvement.

I have been meaning to ask here about the angle between the speaking  
length and backscale portions of the strings for some time. On this  
piano, the disparity is glaringly visible from the pianist's position  
and is, uh, bothersome. I think techs should recommend against pianos  
that exhibit this angle if they have the chance to do so. As I  
mentioned, this bridge exhibits cracking only in the mid-section  
where this angle disparity is present.


Kent


On Sep 22, 2005, at 5:05 AM, Ric Brekne wrote:

> Hi Kent.
> What else has been done then as part of the recently done work ?   
> The plate hasnt been out has it ?
>
> Cheers
> RicB
> .........
> Kent wrote on Caut:
>
> Recently restrung. CA applied around the bridge pins. The  
> midsection  caught me by surprise, because it was the only area  
> exhibiting  cracks. Should I have skipped the CA there so the pins  
> would maybe  move faster and self-correct the angle?  8^)
>
> Kent
>
>
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