Once the gear lever is moved, the synchromesh cone meets with an identical cone about the pinion. As a result of friction, the rotating pinion is, created to rotate at a similar velocity because the synchromesh unit. The motor shaft is connected to a single stop on the gearbox https://gearbox20752.blogolize.com/the-fact-about-gearbox-that-no-one-is-suggesting-72856240