| 摘要 |
A bicycle roller training system of the type having three rollers for supporting a freestanding bicycle uses rollers of a novel design. The rollers comprise a cylindrical middle portion of a uniform first diameter, two end portions of a second diameter larger than the first diameter, and two transitional portions between the middle portion and the end portions. The length of the middle portion is greater than the tread width of a tire of a bicycle with which the apparatus is used. The transitional portions increase in diameter from the cylindrical middle portion toward the ends of the roller. The transitional portions preferably have a curvilinear profile, and the preferred profile of the transitional portions is a parabolic curve. Thus the transitional portions preferably comprise paraboloids of revolution. The rollers also have disk-shaped weights mounted at one or more ends for increased angular momentum. Axles of the rollers are rotatably mounted to a frame. One or more steps may be provided on the frame for convenience in mounting the bicycle.
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