action ratios (was Patent Notice)

Stephen Birkett sbirkett@real.uwaterloo.ca
Wed, 30 Oct 2002 21:35:48 -0500


Dave wrote:

>What I am beginning to think is that the original designs with slightly
>higher action ratios (6.0 - 6.1) delivered something that the more modern
>trend of 5.5 or lower cannot, that there is something inherent in the
>relationship between key and hammer movement that is critical in imparting a
>sense of control.  While this necessitates relatively low strike weights (by
>today's standards), I am more and more inclined to think that this dilemma
>represents the Sophie's choice of action design.

A sobering thought - Cristofori has an action ratio of 10:1.

Stephen

Stephen Birkett Fortepianos
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