Forced lock on the "Niva"

Probably, every owner of domestic, and imported, SUVs ever dreamed to improve the patency of his unit. And most motorists do not even need to overcome deep ruts, swamps, climb steep hills. Passage is increased to at least not just get stuck in a flat place. The installed lock on the "Niva" will help improve off-road performance. Consider what they are, the principle of operation, cons and benefits.

Differential Functions

Even at the beginning of the era of automotive engineering, designers and engineers have experimentally found out that a solid axis for two wheels is not at all useful. The machine is not used in a straight trajectory. Each tire will go its own way. Tires wear out quickly, and the car did not want to turn. This prompted the engineers to find the best solution. They thought - and yet came up with.

So, the axis was divided into two semiaxes, and a differential was established between them . This allowed the wheels on the straight to rotate at the same speed, and in the turns - with different. But the coating is not always completely uniform. For example, under one of the wheels is a stone, under another - sand. Therefore one wheel will rotate more easily. This requires a differential. That wheel, which is harder to rotate, it does not twist. So engineers learned about the effect of slipping. Even the all-wheel drive could not solve this problem. To completely eliminate the slip, a lock was created. Unfortunately, it is not put on the "Niva". But it is very necessary, so car owners acquire and install these mechanisms separately.

Types of locks

It can be either forced or automatic. In the case of compulsory it includes the driver himself. Automatic locking, on the "Niva" installed, works with special self-locking mechanisms.

Types of compulsory system

Often in this case, cam clutches are used. With their help, it is possible to ensure the maximum stiffness of the connection between the body and the semiaxis. Claw clutches open and open by moving the lever in the car's interior. The mechanical drive combines the cable and the lever, or the system of levers. Forced locking, on the "Niva" installed, driven by the driver by moving the lever. In this case, the machine must stand.

The actuator is a pneumatic cylinder. In another case, the closure of the coupling is by means of an electric drive. Forced locking, on the "Niva" installed, is activated in this case by pressing the button. Hard fixation is used to overcome particularly difficult areas. After they pass, it necessarily turns off.

Self-locking differentials

These mechanisms are a trade-off between rigid locking and differential operation in free mode. So, on the basis of such systems, you can use both. In the first case, a viscous coupling or a disk differential will be used, and in the second case a worm mechanism will be used.

Viscous coupling

This lock on the "Niva" is a set of punched discs. One part of these elements is connected to the differential case, and the second - to the drive shaft. Disks are in a sealed enclosure, which is filled with a special liquid of high viscosity.

When the speed of rotation of the differential case and the drive belt coincide, the unit operates as one unit. If the speed of the drive shaft increases, the disks connected to it also rotate faster, and the fluid moves with them. It becomes firmer, and in the end the differential is blocked.

Since the dimensions of the coupling are large enough, it is often used in inter-axle differentials. Because of its design, it can heat up. When the driver uses the braking system, the clutch can conflict with ABS, so today, almost nobody uses it.

Worm self-locking differentials

This system provides automatic locking. The work depends on the difference in torque between the body and the drive shaft. If the wheel slips and the torque drops, the worm differential will be locked and the torque will be redirected to any free wheel. These designs are more popular. Some of the most famous are Torsen and Quaife.

These designs are planetary gearboxes that consist of driven and driven worm gears. Such mechanisms are inter-wheel and inter-axis.

Popular Systems

The car enthusiast buys "Niva" without blocking, and this is a serious disadvantage. In the car there is only the interlocking differential lock. But this is not enough for true lovers of mud and swamps. What is available for connoisseurs of impassability?

Val-racing

The company has been producing products since 2005. Forced inter-wheel locks of this brand are known and loved by many. For "Niva" the manufacturer offers a complete blocking of the front axle. It is equipped with an electric drive. Also available are screw self-locking locks ("Niva"). Reviews about them are mostly positive. The device works, but its reliability is high enough. Use these locks can be for any type of terrain - it can be bogs, forests and so on. These mechanisms are excellent for off-road, and for daily driving in heavy areas.

Automatic differential Krasicova (DAK)

VN Krasikov first produced the first system in 2002. Patented this lock in 2004th. This unique development is the future of self-locking differentials. This is a mechanical system with the ability to automatically lock.

The process is carried out by changing the driving wheels. This makes it possible to operate the mechanism very gently and as stably as possible in any speed ranges. The design allows you to use the differential not only on off-road vehicles "Niva", but also on any other models. The device combines the qualities and functions of a conventional differential. In addition, there is a significant drawback here, when the machine slips one of the wheels. The overall dimensions of this mechanism practically do not differ from classical systems. They can be replaced as you like. Car owners claim that there is no more efficient design. This is a worthy choice, which will be able to reveal all the abilities of the Niva.

How does the lock on the Niva (DAC) work?

This automatic differential can be used on all roads and off-road. The range of possible speeds and loads is very wide. When the car moves, and the thrust of the engine is not higher than the coupling properties of the weak wheel, the differential will not be blocked. If the thrust exceeds the grip characteristics, an automatic fixation will occur. In this case, the "weak" wheel will not rotate.

Varieties of DAK

DAK is used only for off-road applications. DAK-7 is designed for a more sporty ride. But the DAK-5 is a universal device that allows you to drive a car, even in the most inaccessible places. Installation of the lock on the "Niva" is carried out on the front bridge. The mechanism makes it possible to significantly improve maneuverability and stability under many conditions.

DAK-7 is a lock with medium stiffness. Install this system in the bridge, which connects either in slippery conditions, or off-road. DAK-5 is softer, and choose it for bridges that are included permanently.

This system is ideal for those cars that are used primarily on hard surfaces. DAK-5 has a wider range of forces, under the influence of which it is unlocked. The resource of this device is higher in comparison with other models.

«Izh-techno»

The blocking of IZH-techno on the Niva is a fairly simple and more reliable design. The mechanism consists of two semi-axial and spacer couplings. Also included are springs and pins.

Often this system is constantly closed, and as a differential it works only when at least one wheel rotates faster than the leading one. The blocking is due to the effect of engine torque and rolling resistance. Such a device will operate as a differential only if external forces act on the wheel. In slippery conditions, this lock will be fixed and give the torque to all wheels on the axle.

Blocking of DAN on "Niva"

DAN is the automatic differential of Nesterov. You can install it both on the "Niva" from the Volga Automobile Plant, and on the "Niva Chevrolet". This lock will improve handling in bad roads and improve maneuverability in corners. Also, the system greatly contributes to the road-holding stability of the car when performing overtaking. The Nesterov differential is capable of increasing the acceleration even in winter. This device will not get stuck in the sand, nor in the snow, nor in mud and swamps. It can be completely safely applied in the city and on the road, and the tires will not spoil.

For whom?

This automatic differential is recommended for novice drivers. The design will add to the person's confidence in difficult conditions. You can move very peacefully where slips are possible. Also, DAS will save from drifts when performing turns or braking.

It is also an indispensable option for those who prefer to lead an active lifestyle. The device is relevant for lovers of fishing, hunters, car tourists. For participants of trophy-raids it is an excellent opportunity to get a prize.

Advantages of DAO

Among the advantages can be identified security, as the lock significantly improves the manageability, even in the most difficult conditions. Also it is declared about durability - only modern materials are used in production. The most modern high-tech equipment is used for manufacturing systems. It is worth noting that DAN is economical.

Homemade systems

Blocking on the "Niva" with their own hands is carried out quite often. And today it is not uncommon. The craftsmen develop and realize unique designs in metal. Also, many make in the garage copies of "Locraight" and self-locking systems. Often, the differential is simply brewed.

Most of the solutions are special bushings with springs, and the design is reminiscent of preload. By work, they are no worse than industrial products. But to drive into serious impassability on them all the same it is not necessary.

How is the blocking done on the "Niva" with my own hands? To implement this is quite realistic, especially if you know how much the products of popular brands are worth. If there is access to lathes, then there is no difficulty in making such a mechanism.

Using

Novice drivers can face problems using systems. There are many questions about how to enable the lock on the "Field". Sometimes the mechanism just will not turn on the first time. This sin even completely serviceable systems. Why does this happen? The thing is that working with this mechanism requires the driver certain knowledge and skills. In general, the inclusion of transmission and locking is one process. Mechanisms are different categorically.

If the car costs, and the driver tries to block the differential, this will lead to nothing. The grooves and teeth of the locking clutch do not coincide at the moment of parking. In this case, the clutch teeth may be located opposite the crown elements. The coupling simply does not turn. If you managed to start the lock on a standing machine, then it can happen only by a fluke.

To enable transmission, you must use the clutch. Without this action, the system will not work. Even a slight depression of the clutch will cause the shaft's tooth to enter its groove. The lock has a different mechanism. There is a coupling and an output shaft. The latter is equipped with a special ring gear. And both elements are closely linked with the help of satellites.

To implement the blocking on the "Field", the first thing to warm up the motor, include the first gear and begin to move. Driving in a straight line and on a hard road surface will not allow you to lock. Why is that? This is due to the fact that both the rear and front wheels overcome the same distance.

To turn on the wheel locking system, you must drive at low speed and make maneuvers to the right or left. Also, click on the handle, which is responsible for enabling the lock on the "Field". The rear and front wheels will make a different path, and the tooth can enter into its groove. This is how you can turn on the system. The principle of this process is the same regardless of which blocking on the "Field" is installed and used at the moment.

Chevrolet-Niva - is there a difference?

This is also an SUV, and here too a lock is applied. The principle of operation as a whole, it does not differ in any way from the operation of the machinery on the Niva from the Volga Automobile Plant. As for manufacturers, many of those that manufacture locks for Niva offer models for this car.

When to use the system

"Chevrolet-Niva" is a unique car that is equipped with this system. It is used if it is necessary to overcome an impassable site. In this case, the lock on the Chevrolet Niva should be included in advance. Also this option will be useful in the mountains. It is also irreplaceable in case of slipping on sandy roads, snow or slippery surfaces.

On hard surfaces, the need for locking is eliminated. Wheels often have good grip and even torque.

Terms of Use

Switch the transfer case to a lowered row only if the vehicle has completely stopped. The lock (on "Chevrolet Niva" including) is activated during the movement. You can go to a lower gear without stopping the car. To ensure the normal operation of the locking mechanism, from time to time, switch the differential on the transfer case. This is especially true in the winter.

How to enable the lock on Chevrolet Niva

It is activated by the lever on the transfer case. If you move the lever forward and backward, then a lower gear range is activated. The lock is turned on and off by moving the lever to the right and to the left. The handle of the lever is short. Left position - differential locked, right - unlocked.

So, we found out what the forced lock is and how to install it on the domestic car "VAZ Niva" and "Chevrolet Niva". A little patience - and it will work out!