Why your car makes a funny noise when she moves back?

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Frédéric Mercier

Wednesday, February 14, 2018 10:47

UPDATE
Wednesday, February 14, 2018 10:47

Look at this article

In reverse, you have already noticed that your car starts to make a little noise whine?

This sound, to be exact:

This sound, you do the hallucinez not. And it can be explained quite easily.

In fact, according to a detailed explanation posted on Jalopnik, it is the transmission of your vehicle that comes from this funny noise. The majority of the transmissions use helical gears. The teeth of such gears are made in an angle, which allows them to remain in constant contact with one another, thereby making it more silent.

Helical gear

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Except that, for financial reasons, gears are used for the backward tend to be of the cylindrical type. Here, the teeth are straight, and that is what is causing this noise whine you hear when you reverse. The more you move, the faster the noise is intense.

Cylindrical gear

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Here it is!