| 摘要 |
<p>To suppress an engagement noise to a minimum during changing of a gear position through a sliding motion of a shifter. A shift drum center includes a plurality of gear train establishment notches S1-2, S2-3, S3-4, S4-5 disposed, equally spaced apart from each other, on the outer periphery thereof. The gear train establishment notches S1-2, S2-3, S3-4, S4-5 establish a specific gear train selected from among a plurality of gear trains by selectively engaging a drum stopper arm therein. The shift drum center further includes half neutral notches N1, N2, N3 to be engaged with the drum stopper arm. The half neutral notches N1, N2, N3 are disposed on the outer periphery of the shift drum center and at a central portion between each pair of the gear train establishment notches S1- 2, S2-3, S3-4, S4-5, respectively.</p> |
