Posted by Crazy Horse on December 08, 2021 at 07:50:46 from (204.191.200.176):
In Reply to: Overhead Door openers posted by T-Nason on December 07, 2021 at 10:58:41:
Some have commented that the springs do the lifting for the most part. Last time I had new springs put in and the door adjusted (along with the tensioning of the springs), the tech guy said that same thing and that his adjustment was made just up to but not quite where the spring would lift the door.
So the electric motor is just overcoming that last bit of resistance to get the door started on it's upward movement and the springs do most of the work. But I'm thinking the motor must work hard though closing the door maybe? It is actually winding those springs up again for the next lift. But the door weight helps with that I think. Maybe someone could comment on that part?
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