| 摘要 |
PROBLEM TO BE SOLVED: To provide a body frame for a two-wheeled vehicle provided with a main frame capable of restraining a weight increase while securing rigidity, restraining distortion caused by welding and improving assembling precision. SOLUTION: The body frame 1 for a motor-bicycle has the tubular main frame extending backward from a head pipe 20 having a roughly ring shape cross-section having mating parts 30, 31 only on a part below its body. COPYRIGHT: (C)2005,JPO&NCIPI
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