A differential
Mechanical Engineering - (mechanic24h.com)
A differential is a mechanical system present on all vehicles. In particular, it allows the drive wheels to turn at different speeds to facilitate a turn, for example. Integrated into the gearbox, the differential is made up of three conical pinions and a ring gear which drives the entire device. The differential performs three main roles:
It maintains your vehicle’s traction by allowing different speeds between the wheels; It provides better road holding, as without a differential the vehicle would tend to go straight; It limits the wear of your tires.
The use of a differential is more widespread in the automotive sector but it is also found in the field of watchmaking. The system can then have several functions such as, for example, that of compensating for the differences between two balance wheels fitted to certain watches.
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