Quote:
Originally Posted by zakthor
You could keep the current build using pulleys. cable and a cam, then equalize with weight. It is possible to build it so it moves with a pound of force and won't slam down when you release it.
You need a cam because the force needed to lift the door increases as the door goes higher. And it needs to compensate for the changing angle from the cable to where it attaches at bottom of the door.
But you gotta find someone to draw the cam for you...
It is neat that math can work around such a stupid design - how did you think it would work?
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There is a handle on the bottom of the door, canst see because the ladder is in the way. When fully open that handle lines up perfectly vertical with the 3rd stringer out from the house.
I'd mount the winch on the inside face of that stringer. The hinge for the door will be lower than the winch so I think there shouldn't be an issue with the angle. I'll rig up a quick simple pully and rope and validate by hand.
So the idea is winch operated by remote. Lower cable, attach to handle, open it, winch holds it open, when done lower it, unhook cable, retract cable into rafter so it's not visible when not in use.
