Need maximum weight on an extension machine

[idontknoww]

TL;DR Summary: Need ideas on how to get maximum weight/resistance out of a pulley system in a centered axis extension machine

Hi so I am studying mechanical engineering and am currently working on a factory that makes gym machines, and I wanted to know if anyone could explain to me how I could get maximum resistance/weight with a pulley system. The only thing that comes to mind is using less pulleys, which I don’t think I can, and the second thing I thought of is putting the end of the cord lower towards the feet on the leg support thing (sorry don’t know the name of that). Helps a loooot if you could explain visually

 

[Baluncore]

Welcome to PF.

Helps a loooot if you could explain visually

You can attach a picture of the existing machine mechanism to your next post.
There is an "Attach files" button at the bottom left of the reply window.

 

[A.T.]

explain to me how I could get maximum resistance/weight with a pulley system.

Fix the rope to the floor.

Seriously tough, you need to be more specific about the design constraints and desired resistance.