Most transmissions in contemporary automobiles use synchromesh to synchronise the speeds with the enter and output shafts. Having said that, prior to the 1950s, most vehicles utilized non-synchronous transmissions. In basic phrases, two unique gears are attached to input and output shafts and also are engaged with each other. https://louisaayxu.angelinsblog.com/32968054/details-fiction-and-gearbox