Block and Tackle Help - Adjusting Lift Answered
I am working on a project that will lift up a flap, that is mounted to the bottom of a screen door, when the door opens. I am using a block and tackle to do the lifting when the door swing open. Everything works as expected but I would like the flap to travel more, move up/down more but I am not sure how to accomplish that.
I the attached image, the red X's indicates a non-moveable part. The 2 black circles are pulleys. The yellow line is the rope. The green up/down arrow is the part that I would like to raise up higher.
Is there a way to do that without getting too complicated?