Install a locking differential on vases

What could be better than the comfort of your own vehicle? And it's not just about a comfortable fit, and a good trim. It is also important how the car behaves on the road, what obstacles and difficulties can be overcome. And then there is the differential, which in some cases is not justified. Then there is the need for extreme measures to increase the passage capacity of the car. And one of them – differential lock on vases.

But before to proceed immediately to make the necessary tuning, you should understand some important points, which will be discussed in this article.

What is a differential

Any experienced driver who is faced with the repair of their vehicles knows what a differential. But not every beginner is familiar with this term.

In fact, this mechanism is a multi-gear, whose task is to transfer torque from the engine to the drive wheels. Moreover, the angular velocity of each of the two wheels on one axle may differ. This became possible due to the planetary mechanism, which is equipped with a reducer. In the automotive industry the differential – it is a vital part of any transmission.

Before we get into the need of a differential lock VAZ 2101, consider a bit of theory regarding the planetary mechanism. The torque is transmitted by cardan shaft and bevel gear to the differential case. After that, he already uses two gears, which already distributes torque between the axles. The device has satellites which just connected to the axle shaft. Due to the fact that their clutch is characterized by two degrees of freedom, they can rotate with different angular velocity.

Feature multi-stage reducer

Why do you actually need this mechanism? Not all drivers, even with a wealth of experience, know that the left and right wheels of the car are different distance when turning. The external travels a longer path than the inner. Due to the differential torque is distributed between wheels depending on the speed of their movement. And if one of them stops moving, the entire load is transferred to another. This happens in the absence of a differential lock on VAZ 2107.

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With a hard link both wheels on the same axle to axle, the car failed to turn normally, as they would rotate with the same angular velocity. As a result, they had to overcome the same distance. Such problem is solved by the differential. In other words, it allows you to spin the wheels as you want the car quietly included in the turns. That is, the differential is a necessary element of the transmission, without which it can not do any one car.

The flip side

However, due to design features, there is one unpleasant moment. The main torque is always directed to where the rotation is with minimum resistance. For example, a car moves on a flat road, and the load on both wheels is the same. In this case, the differential distributes torque evenly between them.

Here again, one can understand the importance of differential lock on the VAZ 2109. But if one of the wheels encounters a slippery surface (ice) and the other remained on the pavement, the load is changing. Now differential the whole time gives it the wheel on ice, which begins to turn faster, and that which remained on the pavement, it stops.

Everything turns out contrary to logic, because the main point should to the wheel with good traction, in practice, it goes the other way around. In the end, this negatively affects the patency and controllability of the car.

What caused the need for the differential lock

Now we come to the main point about why to block the differential. This mechanism is good only on turns and on a straight road. On rough terrain good enough, though even more damage than good. The example above is clear evidence of why the need to install locking differential vases.

In addition, you can bring another case: one of the wheels axle is stuck in a hole with clay, and the other remained on a solid surface. Now it is easy to guess which of them will be stalled, and which does not remain of torque.

Just for such purposes and serves as a differential lock, which allows you to direct all effort that is at the wheel, who kept a good grip with the road surface. Controllability is maintained and, therefore, to go further already easier.

What types of locks exist

It is Worth noting that leading Russian manufacturer AVTOVAZ is not provided the opportunity to equip their cars regular system of the differential lock. VAZ 2121 and other similar vehicles are a pleasant exception, but when was issued the model 10 family and earlier cars, such a mechanism they had.

In this regard, those owners who have to overcome the lack of roads, was forced to put the differential lock in the WHA with their hands. There are several options:

• Disk mechanism.
• Viscous coupling.
• Screw-worm mechanism.
• Planetary lock.

Let's Consider them in more detail. But first one important point. Some motorists used the barbaric methods of blocking by steeping satellites or install “preload" reducer. To do this extremely is not recommended, since there are more humane methods of differential lock when necessary.

Disc brake

In the differential housing put a few clutches. In relation to each other, they rotated evenly. Thus, in the case of increasing the difference of angular speed between the elements, increasing the friction force. This, in turn, leads to the differential lock.

When using this type of mechanism requires a special gear oil. In addition, there are some disadvantages of locking differential on vases. For example, due to natural wear of the discs needs to be regularly adjusting mechanism. But it will have to do quite often.

Viscous coupling (viscous coupling)

The Principle of operation is almost similar with the disc mechanism, but the difference is still there. It lies in the fact that the reducer uses a large amount of sticky disks immersed in a special viscous liquid. It is based on silicone, which is under the influence of high temperature it becomes solid. That is, when increasing the angular velocity of one of the axes, the liquid is heated and hardens. This causes the disks to interlock more tightly than before.

The Lock works smooth way, and until the liquid heats up and hardens, the effect continues to grow, and lasts until the wheels stop spinning at the same speed. The temperature drops and everything comes in the same mode.

The Main advantage of – this type of lock is often not required to serve. A feature of the mechanism that was complete sealing of the cavity, which is filled with liquid. Only should take into account that this kind of locking differential on vases is not suitable, it is effective to work only in the short term slippage. For this reason, it is mainly for parquet SUVs.

Drivers who like most of the time to wheel on the road, this is not an option, because the site will overheat.

Helical worm gear

Among the other counterparts of the worm gear is considered a more reliable option. While the car is moving in a straight line, the screws rotate freely. But as soon as a good is a tangible difference between the angular speeds of the axle shafts, movable screws are moved into the end position and fixed in special grooves. This enables the lock.

And when the speed of rotation of the wheels is aligned, the screws come out of the grooves and the planetary gear continues to work as before. Period of operation fully depends on the design features screws themselves.

Some special oil here do not need to choose, it will fit any brand of transmission. If you were to draw a comparison with the native planetary gear, the helical locking differential VAZ lifetime a lot more. Therefore the majority of owners of domestic cars prefer the worm lock.

Planetary lock

If in fact, it is a common native planetary reducer, only with a distinctive difference – habitual satellites are replaced with chains of balls. In addition, the principle of operation is also different. When triggered, the lock is not taken into account the difference in angular velocity of the rod, but something else. The mechanism relies on the appearance of differences between the traction power unit and axial load. In contrast to the worm screw mechanism, this solution is not so expensive.

Tough choices

Permanent blocking – a lot of SUVs that almost never make it out of terrain. In all other cases you need to consider the features. In addition, disc gear, you need to purchase a special lubricating fluid, the mechanism requires frequent maintenance. It's not the best solution for the differential lock on the 2110.

In addition, due to the small, but constant friction deteriorates drivability, increased fuel consumption. Besides, frequent driving on a bad road unit quickly wear out.

For the viscous coupling is characterized by high inertia and for this reason, the mechanism may overheat or be included with a noticeable delay. For off-road driving the suspension is not suitable, but for travel around the city is the perfect solution. Because of the complexity of design and cost, not every owner of classics will choose this option.

The Actual mechanisms were and remain of planetary and helical gears. They show themselves well on the snow-covered city streets and rough terrain. However, fans of seriousoffroad the suspension are not satisfied.

Setting up

In many workshops the cost of installing a locking differential is quite high. Have to buy the mechanism itself, and is roughly 10-50 thousand rubles, and even more. Also require additional materials and other expenses. The ultimate cost of this professional work will not suit everyone's pocket.

Fortunately, to save on costs by installing self-locking differential on vases. For this there are simple instructions:

• The Car is placed on a pit or overpass.
• Securely fix it with the help of jacks.
• To dismantle all of the wheels along with the brake drums.
• To Remove the axle shaft.
• Disassemble the propeller shaft with the reducer.
• Put a blocking mechanism.
• Assemble in reverse order.

As you can see, all the work is not particularly difficult, but you may need someone's support.