I am curious as to how an individual, or company, goes about designing cams for certain draw-force curves. Most of the folks that I speak with know the fundamentals of cam design...round wheels, soft cams, hard cams, single cams, etc... and most offer such information as " the rounder the cam then, typically, the easier it is to draw at any given draw weight" . But, I would like to know more about the actual physical geometries of the cam. For example,

1. How does the actual size of the cam relate to the force draw curve, if at all? Lets say a 4 inch wide cam as opposed to a 3 inch wide model.

2. Generally speaking, rounder cams are easier to draw but how does a cam like that found on the Bowtech dual cam bows generate such a stiff draw cycle without being shaped in the fashion of the older style hatchet cams?

Any comments directly related to these type of issues would be greatly appreciated as I am always looking to further my knowledge of some of the technical aspects of the sport.