| 摘要 |
PROBLEM TO BE SOLVED: To dispense with consideration for a dust adhesion countermeasure on a bearing part on a second rear arm in maintenance of a rear wheel, and to improve the maintenability of the rear wheel, concerning a motorcycle in which an engine body is loaded unrockably on a body frame and the rear wheel arranged between rear arms is journalled by a first rear arm composing a part of a case incorporated with a power transmission device for transmitting the power from the engine to the rear wheel and supported by the engine body vertically rockably, and the second rear arm supported by the engine body vertically rockably around an axis coaxial with a rocking axis of the first rear arm. SOLUTION: The second rear arm 40R is constituted by connecting plural arm members 47, 48 including a front arm member 47 supported rockably by the engine body 16 and a rear arm member 48 for supporting rotatably an axle 57 of the rear wheel WR, in such a way that mutual connection can be released.
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