knuckle size and centerpin height

[David Porritt]

On Mon, 31 Jul 1995, Vince Mrykalo wrote:

> In Don and Randy Morton's class on the grand action, given in
> Albuqueque, Randy mentioned that the reason a smaller knuckle
> may give a better results is because the centerpin location on
> the hammer flange may be too low.  He stated that his research
> indicates that by raising the pin's location at the flange by
> 2mm on the Steinway shanks and flanges and I think, the other
> styles as well (Tokiwa), gives the best results when replacing
> parts, because that is where the original placement was. FWIW.

Wouldn't this affect the "spread" the distance between the hammer flange
center and the wippen flange center?  I hear the 4-13/32" is an _absolute_
figure on Steinways and 4-27/64" on Baldwins?!?!

David M. Porritt, RPT
SMU - Dallas