CHOOSE A TORQUE WRENCH FOR CARS
A best torque wrench for a car is a professional tool that looks like a wrench with a built-in dynamometer. Such a device is used not only for cars, but also for tightening threaded connections, where certain parameters are precisely defined in construction, industrial equipment, and engineering. That is, where you need an exact assembly and a certain value of torque.
Instructions on the use of the machine or other technical units have information with what force it is necessary to tighten a certain threaded connection, including the wheel in the car . In order for all the connections to be tightened correctly, without understitching and dragging, so that the thread does not break and all connections are tight, you need to use just such a key of a certain type. The unit of its measurement is considered to be Newton-meter.
Such a tool has the form of a ratchet, but it also has a scale that determines the key's force on the nut. The scale may be an arrow, like a gauge, or a digital screen will show the desired values. Also on sale are options with carved indicators on the tool itself, where the indicator will be a click. Such devices are very popular among car owners, and they are quite inexpensive.
TYPES OF POWER KEYS
Which is better to choose this type of tool, you decide. It all depends on what material resources you have, and also for what specific purposes such an adaptation is needed. Such tools on our car market are presented in the following modifications:
-limit type, or snap;
-equipment with a digital display.
The first option - switch keys - is quite common among domestic car owners. They are inexpensive, but their error is quite high - from 6 to 20% in some cases. Only professional models, having the form of a manometer, will show less error in the work. Basically, the switch copies are used in work where high precision is not required if you just need to tighten the thread.
Snap strength keys are semi-professional tools. They are used by car mechanics at service stations, as well as experienced drivers. Such tools have a rather low percentage of error, most of them are calibrated at the factory, and a certificate is issued.
Dynamic keys with a digital indicator - the most accurate and reliable, but also the most expensive of the existing options. The percentage of the error of such a tool is less than 1 percent. It is also possible to download data to the Excel program and install programs with a sequence of actions . Most of these torque wrenches are used in professional service stations.
CHOOSE CLIMATE EQUIPMENT FOR CARS - AIR CONDITIONING OR CLIMATE CONTROL
To freely talk about what is best for the car and its owner - climate control or air conditioning, you need to clearly understand the meaning of these two concepts and understand their differences.
UNDERSTANDING CLIMATE CONCEPTS
The task of the air conditioner is to cool the flow of air that enters the cabin of the car. The principle of operation is simple, and the device itself is unpretentious, has even some similarity with a conventional refrigerator (of course, not according to external characteristics). The driver has to adjust the desired level of air cooling in manual mode. To do this, change the speed of rotation of the fan blades. If it is required not to cool, but to heat the air in the cabin, then the stove comes to the rescue .
Quite another thing is climate control. The task of this device is to maintain the temperature level that the driver sets. Management is carried out through a special unit, which conducts a comparative analysis of the real indicators of the air temperature in the cabin with the specified parameters. Depending on the result, the control unit activates heating or cooling, changes the speed and direction of the air flow. In modern models of HVAC equipment, there is a function of analyzing the intensity of solar radiation and calculating the aerodynamic pressure that is created during high-speed traffic .
NOT ALL CLIMATE DEVICES ARE EQUALLY GOOD.
There is no unified climate control system that could be found in all cars. Each manufacturer seeks to create its own, unique equipment that will give the user even more comfort and pleasure.
It's nice when the electronic system in the car intelligently controls the flaps. This is especially acute in winter, when the car requires careful heating. After all, the first must warm the glass . At this time, the engine also warms up. When it reaches the required operating temperature, the air flows onto the legs of the driver and passengers. And only after that the heated air can be sent to the people sitting in the car. In the summer, the cooled air should immediately be directed to the passengers.
Now the eyes of motorists focused on climate control systems, which have the possibility of programming - ACC. It is very convenient when you can make preferences for the ventilation, cooling and heating of the air in the memory of the electronic system. There is no need to set the parameters of the climate regime each time.