Gear ratio

Transmission includes in its composition transmission mechanisms, through which the torque passes to the driving wheels from the engine. The transmission consists of a clutch, ensuring the absence or presence of a connection between the box and the motor, drive shafts. An integral part is the gearbox itself . Through it, the torque and power are fed and redistributed to the drive shafts from the engine.

Most of the technologies that are used in tuning the transmission, has been tested in motorsport. It should be said that the transmission of any, especially a sports car, is the most important way to implement the dynamic characteristics of the engine. A machine with a relatively weak engine can become fast enough if the transmission gear ratios are correctly matched.

In sports cars are used unsynchronized (cams) and synchronized boxes. Depending on the type of switching, they are divided into sequential (providing sequential selection) and conventional (H-scheme).

For the implementation of simple (normal) traffic on the road, the cam-boxes are almost unsuitable. This is due to the fact that they make a lot of noise and have a relatively small resource, and are also considered "hard" when switching gears. In addition, their cost is incommensurably higher than the synchronized ones, and they need qualified and regular maintenance.

Synchronized boxes differ from the boxes with standard gear ratios. Correct selection for the main pair of the primary shaft, gearbox and driven gears in the secondary shaft guarantees the coordinated operation of the entire transmission. The gear ratio is selected taking into account the moment and power characteristics of the motor. An important factor is the size of the wheels.

The gear ratio is the ratio of the number of teeth in the driven gear to the number of teeth in the drive gear. The higher it is, the faster the engine will twist the required speed. This will provide a faster speed dial. Together with this, there is a need for frequent switching. As a consequence, there will be a slight decrease in the maximum transmission speed.

There are several ways to increase the acceleration dynamics of the machine.

You can change the gear ratio in the main pair of the gearbox. For example, front-wheel-drive vehicles "Vaz" of the tenth generation have, as a rule, standard figures. So, in the production process, the gear ratio is set from 3.7 to 3.9. The exception is Vaz 21103 (16V). Its gear ratio is 3.5. As practice shows, changing the main pair by 4.1 or 4.3 can turn the usual "eight" into a very dynamic car. Together with this, it is more often necessary to carry out gear changes. But, along with this, with any maneuver and at the traffic lights the car is the first.

Talking about the shifting gear, we can not fail to mention the special tuning series. If you unscrew the engine quite strongly at the first, then when you switch to the second, the speed will drop dramatically. This is mainly due to too much difference between the gear ratios for the first and second gears. Tuning series contribute to a confident and uniform acceleration. In this case, the first transmission is slightly reduced (relative to the standard one). Dynamics with this option deteriorates somewhat, but at the same time it becomes somewhat "longer". The second will be close to the first. This will save you from the rather tangible "failure" that happens in the front-wheel drive cars "VAZ". The third and fifth gears are the same as the standard ones. The fourth is more approximate to the third, and the sixth is to the fifth, respectively.