| 摘要 |
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 a first and second lower headset bearing sizes for the first and second frame sizes, respectively, wherein the first lower headset bearing size is different size 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 the 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. 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.
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