Geometry analysis of six sizes

Frame and Wheel took a closer look at the geometries of the six sizes of the frame. Frame and Wheel had to estimate stack and reach based on the measurements from the schematics. 

Cm	47	50	53	56	59	62
Seat tube (C - T)	47.0	50.0	53.0	56.0	59.0	62.0
Top tube (effective)	51.5	53.0	54.0	56.5	57.5	59.0
Head tube	10.5	11.5	14.0	15.5	18.5	21.0
Chain stay	41.0	41.0	41.0	41.0	41.0	41.0
Front center	57.2	58.4	59.0	59.6	60.6	61.5
Wheelbase	97.2	98.4	99.0	99.6	100.6	101.7
Head tube angle ⁰	71.0	71.5	72.0	73.5	73.5	73.5
Seat tube angle ⁰	74.5	74.0	74.0	73.5	73.5	73.5
Bottom bracket drop	68.0	68.0	68.0	68.0	68.0	68.0
Stack *	50.8	51.6	54.7	56.5	57.8	62.1
Reach *	36.2	37.0	37.2	38.9	39.6	40.6
Fork rake	4.5	4.5	4.5	4.5	4.5	4.5

The conclusion is that the geometry is a fairly standard race geometry, even at the larger sizes, but not as aggressive as some of the thoroughbred geometries that are out there. This is makes the frame perhaps more comfortable for the enthusiast or the aging racer who believes that he is still twenty-five years old, when in fact he is forty-five years old. For an IBS, a frame that offers a different geometry from the other brands that it carries is important because it gives them more options when trying to fit a bicycle to a customer. Additionally, many of their customers are over age forty years old, enthusiast riders rather than dedicated racers, and less flexible than they used to be.