[CAUT] stack fit to keyframe

John Delacour JD at Pianomaker.co.uk
Tue Sep 12 17:28:34 MDT 2006


At 3:57 pm -0600 12/9/06, Fred Sturm wrote:

>The major friction in the action, though, is knuckle to jack/rep 
>top, which is far from the convergence point except in Overs' design.

Strictly not so.  Here is Herrburger's action from 1898, which was 
imitated with variations but no improvement by one or two other 
action makers.  Note that the two arcs are as near to touching as can 
be throughout the descent of the hammer into check.

JD



-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/caut.php/attachments/20060913/c30179d3/attachment-0001.html 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: P719D9172.png
Type: image/png
Size: 30709 bytes
Desc: not available
Url : https://www.moypiano.com/ptg/caut.php/attachments/20060913/c30179d3/attachment-0001.png 


More information about the caut mailing list

This PTG archive page provided courtesy of Moy Piano Service, LLC