Straight line movement: both front wheels roll synchronously with the main gear. The differential rotates at the same speed, the bevel gears in the differential box are stationary.
Turning movement: the outer wheel in relation to the turn travels a longer distance than the inner one (difference in rotational speed). If the different rotational speeds of the wheels are not synchronized, the Focus will steer poorly and will drive through corners jerkily with the inner front wheel turning. This is prevented by bevel gears, in the differential box they provide the necessary synchronization: the faster rotating bevel gear on the outer drive shaft brakes the bevel gear on the outer drive shaft by means of both intermediate bevel gears. The necessary difference in rotational speed neutralizes the difference in the distance traveled between the two front wheels.
Power transmission to the wheels (from synchronized transmission): although the gearbox housing is mounted offset from the vehicle's centerline, both drive shafts are the same length. The right drive shaft is driven from the gearbox output flange by an intermediate shaft.
Drive shafts: 1 - outer cuff of the hinge made of thermoplastic synthetic material; 2 - inner rubber joint cuff; 3 - intermediate shaft; 4 - middle bearing - intermediate shaft.
Constant velocity joint: constant velocity joints (CV joints) provide comfortable torque transmission to the drive wheels. Since they have fewer parts subject to wear than cardan joints, they are highly durable. On the gearbox side of the Focus drive shafts, there are tripod joints (with a three-beam sprocket, support rollers and a tripod bell), and on the wheel side, constant velocity joints (with a spherical sprocket, ball bearing separator and spherical shell) are mounted. Constant velocity joints have almost no driving effect on the steering wheel.
Drive shaft consoles: rotate on the wheel side in two ball bearings of the steering pivot support. Unlike the fine-spline profile on the wheel hub side, the fine-spline profile on the gearbox side has a slight twist, which prevents the occurrence of clicking noises at the start of movement.
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