Many people write that the wheel, poorly fixed, can also knock, and quite impressive. We will not discuss the sound of sound or sonorous – what to compare with? It is more important that the wheel knocks quite chaotic, and not only when moving at low speed. Some write that it disappears on a high knock – indeed, behind the general noise of the car, you can not hear it. But everyone will notice the vibration created by such a wheel, and the silence bombed about it!
It doesn’t look like the wheel hanging out. By the way, in such cases, it was vibration, “inexplicable”, many saved many from major troubles.
The latter also applies to the version of the destruction of the bearing of the crossbar of the cardan shaft. Yes, there will be a knock, but with an increase in the speed of the car, a strong vibration will again appear-you can’t go with one.
The authors of other answers suggested looking for problems in the brakes. Say, due to the warning of the canvas of the brake disk in the shape of a screw, eight, etc. p. The pads are loaded with variable forces, as a result of this, the details of the suspension, controls, etc. are shaking. D. It is not for nothing that the plant limits the maximum axial beat of the working surface of the disk on a new car with several hundred parts, while in practice there were deformation up to half a million and above. But this is not our case. The crooked disk praises the blocks at high speeds, and not before stopping.
Only a few experts correctly indicated the nature of the knocks. Among them is the winner of the competition. Here is his opinion: “Most likely, the source of knocks is a differential box. Satellites rotate on the axis, which sits tightly in the holes of the box. But if the machine, the old one (the holes are broken, the axis is worn out), then the axis shifts in motion with large revolutions until the centrifugal force will press it with one of the ends to the large six. There are no knocks.
If you reduce speed, this force will decline. Finally, a critical moment will come: every time, passing the vertical position, the axis “falls through” in the holes of the box – and shakes the big gear loudly. Moreover, the condition of this is hot, liquefied oil. On the cold, viscous knocks no “.
