this post was submitted on 20 Dec 2023
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What?
Fast & The Furious: Glenmore Drift
What makes Garage door springs so dangerous? I feel like the spring on a car shock absorber holds way more energy, and I've done that dozens of times with spring compressors of dubious quality. Just don't put your body where the spring would like to go.
There are two types of garage door springs, and one is more dangerous than the other when it comes to replacing them.
If there is a single spring enclosing a shaft that spans the top of garage door opening then you have a torsion spring, and these are the more dangerous ones for a DIYer to replace because it has to be wound tightly enough to lift the weight of the door.
If your door has a spring on both sides of the tracks that guides the door overhead then you have extension springs that stretch when the door is closed. These can be safely & easily replaced when the door is open (make sure the door is somehow locked/blocked open and can’t close by accident). The springs should be under no tension at all when the door is open.
Garage springs become a lathe, spinning really fast. I'm sure you can find examples of lathe accidents on NSFL channels.
Additionally, it's under tension. When suddenly not under tension, it has to release all that energy somehow - and these things have a LOT of potential energy wound up in them, it's like your engine throwing a rod - except you, since you're working on it, have a tendency to potentially wind up as the engine block in the analogy.