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Synchromesh engaged

Synchromesh engaged

The fork moves the synchromesh towards the selected gear. Friction surfaces synchronise the shaft speeds, and synchromesh and gear lock together.

Explained in

    How manual gearboxes work

    Internal-combustion engines run at high speeds, so a reduction in gearing is necessary to transmit power to the drive wheels, which turn much more slowly. Read more

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