How do extendable snow brushes work?

DerbyDad03 · 2013-02-10T03:31:23+00:00

I've got a snow brush that can be set to various lengths by turning it in one direction to loosen the inside tube, setting to the length you want and then turning it in the other direction to lock it down. There are no pre-determined lengths, like indents or anything like that. It can be set to any length within it's upper and lower limits. On rare occasions, it doesn't lock and just continues to turn regardless of what length I set it to. If I keep fiddling with it, it eventually locks and then it's good for quite awhile. This morning while I was cleaning the Nor'easter off of a couple of cars, I loosened it to extend it and no matter what I tried I couldn't get it to lock down again. Assuming it was finally really broken, I brought it into the house with the plan to see what I could do to fix it. A few hours later I picked it up to have a look and when I turned it, it locked right down. I played around with it and it locked down at every position I tried. So what is inside the tube that allows the tubes to loosen and slide and then tighten back down and lock? Could the cold affect whatever the locking mechanism is?

Feb 10, 2013 40 Replies

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Gordon Shumway 13 years ago

Aw, come on. It's for the children.

If there weren't so damn many do-gooders out there trying to protect us from ourselves, this father probably wouldn't have survived to puberty and then this tragedy wouldn't have happened.

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