Why do reverse kinks happen at random points when a coiled cord is pulled straight, and is there an easy way to undo them?

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I’m talking about phone cords like [this](https://external-preview.redd.it/l6EY6iy7qewdf0NOJawX88AL4YR09LfbGcnu4iam73I.png?auto=webp&s=b43efa75d421ba5cb68b9c48e7bd7309fe2d458f) but I have a current issue with a hose made the same way. I tried [this video](https://www.youtube.com/watch?v=QeSycf6A7pI) that keeps coming up and it doesn’t work, so I would like to see if anyone has an explanation so I can know what’s causing it in the first place to maybe help me understand how to undo it.

In: 9

It happens when the cord gets twisted a different number of turns than the number of loops in the coil. For a phone, this can happen if you pick the phone up with one hand, talk for a while, maybe switch it to your other ear, and hang up with your other hand. For your hose, pulling it straight untwists it, and it didn’t get the right number of twists in it when it coiled back up.

In the video, opposite sides of the kink are being rotated a full revolution relative to each other, and in the direction that tightens the coil.

I haven’t done this in years, and I don’t have a way to test this right now, but …

If the kink is not too far from the end of the cord, I would unhook that end of the cord, shove the tip through the coils until it reached the kink, and then just pull.

I’m pretty sure this worked for me.

Unhook the cord, on the side closest to the kink. Then simply wind the cord so that it follows the correct coil pattern. The kink will get pushed down along the way as you go, so you probably just need to rewind the whole section of cord.