Varieties of torque wrenches
Tools of this type are divided into two main types: marginal and indicator. They differ in the method of use and the indication of the required torque.
Limit wrenches torque wrenches
These tools got their name due to the fact that when the exhibited tightening force (limit) is reached, they produce an attention-getting sound, for example, a click, or signal in another way. It is the keys that are used most often, because it is easy to work with them - the master exposes the required effort before starting work, and turns the device until it is reached. This is convenient, but on the other hand, limit keys have a large error.
Indicator torque wrenches
The use of such tools involves constant monitoring of the indicator located on the key. As soon as the force reaches the appropriate value, the dragging stops. Indicator devices are divided into three types, depending on the display scale:
Best torque wrench arrow . This is a classic, where an indicator of effort is the usual arrow on the digital scale. Easy to use, unpretentious to storage conditions, cheap. And it is used extremely rarely because of low accuracy. Of course, it is better to tighten the arrows than relying on intuition, but it is better to choose a more modern version.
Snap Torque Wrench. It is a symbiosis of marginal and indicator instrument. Having on the handle a scale measuring the effort for visual observation, it also allows you to set the desired value, and when it is reached it clicks. Actually, due to this sound, it got its name. Advantages include good accuracy of force measurement, and disadvantages include fragility. When falling, shocks or other mechanical effects, the balance bar shifts, distorting the scale indicators. Also need periodic calibration. In general, with this tool you need to be very careful.
Electronic torque wrench . It is considered a professional device with the highest accuracy rates, the only disadvantage is the high price. The scale of the dynamometer is electronic, can emit a signal when the required tightening force is reached, and the error is no more than 1%. Typically, the cost of such keys is too high for the ordinary motorist, so most often they are found at the service station.
Also, the keys can be divided according to the size of the scale of measurement of efforts. Thus, some instruments have a scale of up to six NM, others up to two hundred, and some even over three hundred NM.
Working with keys of different types is similar. It is necessary either to monitor the scale indicator independently, or set the value and wait for the corresponding signal about its achievement.
Electronic torque wrench . It is considered a professional device with the highest accuracy rates, the only disadvantage is the high price. The scale of the dynamometer is electronic, can emit a signal when the required tightening force is reached, and the error is no more than 1%. Typically, the cost of such keys is too high for the ordinary motorist, so most often they are found at the service station.
Also, the keys can be divided according to the size of the scale of measurement of efforts. Thus, some instruments have a scale of up to six NM, others up to two hundred, and some even over three hundred NM.
Working with keys of different types is similar. It is necessary either to monitor the scale indicator independently, or set the value and wait for the corresponding signal about its achievement.
What are the races? Guide to the five main types of motor sport
NASCAR - the National Association of Stock Car Racing (National Association of Stock Car Auto Racing), which gave the name of the NASCAR Cup Series - the main championship in car racing in the United States, the progenitor of which are considered illegal bootleggers. Under the light bodies, stylized as civilian cars, a powerful engine is hidden, and the pilot is reliably protected by a safety cage. At each of the 36 racing stages of the year, cars all the time turn on the ring road to the left and try not to crash into the stands or rivals. The explosion of the wheel, debris from a variety of cars, crashes into the concrete wall at speed and fights after the finish are all NASCAR. And the coolest pilot is considered to be Richard “The King” Petty, who not only glorified these races, but also made them financially successful.
Indy 500 -(also Indianapolis 500 and The 500) claims the status of the oldest regular car race of the planet (although we think this is the Sicilian Targa Florio), it is one of the most prestigious circuit racing in the world, which has been held since 1911. The distance of 500 miles of the car passes on the highway, which received the nickname “old brick”: for a long time the covering was made of bricks, which now remain only on the start-finish line. On Pole Day, after qualifying heats, the sequence of pilots is determined at the start; on the Popping Day, losers are excluded. Before the race, the owners of the track say “Gentlemen, start the engines!” (And the ladies, if there are any). Millions of viewers from different countries watch the Indy 500 races on TV, and by the end of May one can see everything with their own eyes, including the unique tradition: the leader at the finish is not drinking champagne, as in other races, but milk. But he receives a million dollars as a reward, so you can suffer.
The Russian Rally Championship is a sequel to the Soviet racing series, the main tournament project of the Russian Automobile Federation and the opportunity to get together with the title of the best rider in the country a pass to big motor racing. The conditions in general are simple: your car has all the documents in order, and you yourself long ago took the yellow sticker “U” from the rear window, received the RAF license and is ready to go through all the stages with the maximum profit.