| 摘要 |
PROBLEM TO BE SOLVED: To keep a vehicle body width by implementing the vehicle body structure of a motorcycle, solving the problem of an increase in vehicle body width in improving the rigidity of the vehicle body of the motorcycle, and to restrain an increase in the weight of the vehicle body, by constituting the vehicle body structure of the motorcycle capable of solving the problem of the increase in the weight of the vehicle body in improving the rigidity of the vehicle body of the motorcycle. SOLUTION: In the motorcycle 10, main pipes 32, 32 are extended from a head pipe 31 backward, and a pair of right and left down tubes 35, 36 are obliquely extended to the lower back side from the head pipe 31. The down tubes 35, 36 are formed to be tapered as they go from the head pipe 31 to an engine 14 seen from the side of the vehicle body, and formed uniform in width from the pipe 31 to the engine 14 seen from the front of the vehicle body. COPYRIGHT: (C)2005,JPO&NCIPI
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