How Everything Is Made on Instagram: "How differential gears work (and why cars need them): When a car turns, the outside wheel has to travel farther than the inside wheel. A differential gear makes this possible by allowing each wheel to rotate at different speeds while still receiving power from the engine. Inside the differential, a set of bevel gears splits torque between the wheels and automatically adjusts their rotation during a turn. Without it, tires would scrub, steering would be jerky

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