Initial Testing

Initial testing and problem fixing to ensure system works as expected.

Arm lifting problem before Arm lifting problem after

Arm Lifting Problem:
Before starting the tests, we noticed that the horizontal lever arm moves up when the rope is pulled.

Fix:
In order to fix this problem, we glued the horizontal lever arm to the lever crank body, as there was no need for the arm to be able to rotate, since it is a solid arm that does not deform with added weight.



Floating problem video Taped brake pads slowed it down

Fast Falling Problem:
Our system was falling at free-fall, and therefore we suspected that there is no friction between the brake pads and the rope.

Fix:
We taped the brake pads together to see if by ensuring there is friction, the system will slow down properly. It did, and therefore we concluded that the issue we will need to fix is the friction between the rope and the brake pads.



Floating problem Floating problem fixed

Floating Problem:
We noticed that during our tests, the object floated from the arm it was hooked to. This was causing the bottom lever arm to float up, which caused the horizontal arm to move back and the friction between the brake pads to lessen. Therefore, the system moved down very fast.

Fix:
In order to fix this problem, we implemented a "locking" system that locked the bottom lever arm in place after the weight was initially applied. This ensured that even if the object floated, the arm will not be affected.

This slowed down our system as desired.



Tilt problem Tilt problem solved

Tilting Problem:
We noticed that the system tilts due to the disparity in the rope hole location between the top and bottom.

Fix:
Therefore, we centered the hole through which the rope goes inside on the top, which fixed our tilting problem.



Rope shifting problem Rope shifting problem solved

Rope Shifting Problem:
We saw that during some tests, the rope pops out from in between the brake pads, causing the whole system to fall free-fall.

Fix:
We therefore created a path for the rope to properly align to the brake pad.

Onto final testing!