Reply to "Car lifts"

panterrorMy 74 GTS

quote:
I'm looking at installing one of the screw drive garage door openers that sits on the wall above the door, supossedly only needs 4" clearance. Then I need to figure out how to raise it by adding some track in the runner to get it to open closer to the ceiling!

Just be advised, there are some limitations to high lifting a door with a conventional spring balanced opener. Depends upon how high the door is lifted before it starts to feed horizontally, the weight of the door, and the power rating of the opener.

Conventional openers count on the effective weight of the door being lessened by the spring winding up and reducing the effective weight of the door as is closes. The higher you lift before the door goes horizontal, the more the spring unwinds and the heavier the door gets.

-Kelly

2/26/086:49 AM

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