[pianotech] crown and radius

[Ron Nossaman]

Gene Nelson wrote:
> Greetings,
> As my math skills are weak - I am looking for a formula or table for 
> determining the crown that is built into a radius cut rib based on 
> radius and rib length.
> Also, if the apex of the radius is not centered on the rib length is 
> there a way to calculate the crown?
> Any help would be appreciated.
> Gene


The math part's covered, now the concept part. If the crown is 
a constant radius circle segment, undistorted by load, the 
high point of the crown can't be anywhere BUT in the center of 
the rib.

Ron N