Method of manufacturing a group of bicycles

Abstract

A method of designing and manufacturing a model of bicycles in such a manner that the size (e.g., diameter) of the head tube bearings and/or the stiffness of the forks varies between frame sizes. The method includes selecting first and lower headset bearing sizes for the first and second frame sizes, respectively, wherein the first lower headset bearing size is different than the second lower headset bearing size. The method further includes manufacturing first bicycles of the first frame size and second bicycles of the second frame size, and coupling first and second lower headset bearings to the first and second bicycles, respectively. The same model designations are then attached to each of the first and second bicycles. This same method can also be used with models having more than two frame sizes. The difference in size of the lower headset bearings and/or fork steerer tubes can be substantially proportional to the difference in length of the seat tube.

Dependencies are inferred from the claim text.