Gear ratio

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2018-03-19 01:55:22

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Powertrain includes a reduction gearing through which torque is transferred to the drive wheels from the engine. In the composition of the transmission includes the clutch, providing the absence or presence of a connection between the box and motor drive shafts. An integral part of is itself transmission. It is through the flow and redistribution of the torque and power to the drive shafts from the engine.

Most technologies that are used in the tuning of the powertrain, passed their test in motorsports. It should be said that any transmission, especially a sports car, is an important way of realizing the dynamic characteristics of the motor. Machine with a relatively weak engine, can be fast enough if you are correctly chosen transmission gear ratios.

A sports car applied In non-synchronized (Cam) and synchronized the box. Depending on the type of switch they are divided into sequential (for sequential selection) and normal (N-scheme).

For simple (normal) traffic Cam box is almost unusable. This is because they make a lot of noise and have a relatively small resource and are considered to be “hard” when shifting. In addition, their cost is disproportionately higher synchronized, and they need qualified and regular maintenance.

Synchronized boxes boxes are different from standard gear ratios. The correct selection for the main couple the primary shaft of the gearbox and the driven gears in the secondary shaft ensures the coordinated operation of the entire powertrain. The gear ratio is selected based on the torque and power characteristics of the motor. An important factor is wheel size.

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The Gear ratio is the ratio of the number of teeth in driven gear to number of teeth in driving gear. The higher it is, the faster the motor will remove the proper number of revolutions. This will ensure a quick set speed. Along with this arises the need for frequent switching. As a result, will occur a reduction of the maximum speed on the transmission.

There are several tools to enhance the accelerating dynamics of the car.

You Can change the gear ratio in the main gear pair. For example, front-wheel drive cars "VAZ" the tenth generation have, as a rule, standard numerals. Thus, in the manufacturing process set the gear ratio from 3.7 to 3.9. The exception is VAZ 21103 (16V). Its gear ratio – a 3.5. As practice shows, the change of a pair at 4.1 or 4.3 can turn an ordinary “eight” in a very dynamic car. Along with this, we often have to switch gears. But at the same time, during any maneuver and at a traffic light the car first.

Speaking of shifting, not to mention about the special tuning series. If to twist the engine hard enough at first, then switching to the second fall sharply momentum. This is due mainly to the too large difference between the gear ratios for first and second gear. Tuning the ranks contribute to a steady and uniform dispersal. In this case, the first gear is slightly lowered (relative to the standard). The dynamics in this embodiment is somewhat greater, but this is becoming few “long”. The second will be close to the first. This eliminates quite noticeable “failure”, which happens in FWD cars "VAZ". The third and the fifth transfer are the same as standard. The fourth is more close to a third, and sixth to fifth, respectively.


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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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