| 摘要 |
PROBLEM TO BE SOLVED: To reduce trail change and improve concentration of mass and the like in a front arm type front wheel suspension system. SOLUTION: An upper end of a front fork 2 supporting a front wheel 1 is rotatably supported by an upper joint A on an upper side holder portion 6a formed on a front end portion of a body frame 5 via a steering head 4. Meanwhile, the mid portion is rotatably connected to a front end portion of a front arm 18 by a lower joint B. The front arm 18 extends to the rear of a cylinder portion 14 along the sides of a down frame 7 and the cylinder portion 14, where it is rotatably connected to an upper portion of a crankcase 15, and is further connected to an upper portion of a shock absorber 19 arranged to the rear of the crankcase 15 via a connecting portion 56 and a support arm 57. The rear end portion of the front arm 18 is connected at the rear of a center of gravity G of the body. The shock absorber 19 is arranged juxtaposed to a shock absorber 26 of the rear suspension in the lateral direction.
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