I am seeking the guidance and wisdom of my fellow peers. I am stuck with half fulfilled theories and more questions than answers. My goal that I have been tasked with is to come up with various forms of constant resistance that is adjustable in a push and pull format. I have looked at brakes, drums, magnetic resistance, constant force springs, springs in general, and have been trying to avoid electric applications due to unfamiliarity. However, I am trying anything novel as of late.
1. Length of sliding mechanism 3 feet
2. Width 6-8 inches
3. Choice of guidance is open... (plate, railing, etc)
4. Forms of contact for sliding wheels preferred but not definite. (as I stated my narrow mind is blah)
5. Resistance option locations: Opposing pulleys for variance in push-pull resistance, brake pads to either wheels (size limiting .25-1.5 inches) or tread like system, plate and sliding component (magnetic)
I have looked at various forms of magnetism from the permanent to electric but just don't have all of it pieced correctly. I don't want to use external power source if possible.
My first post/thread, If failed to state something or give proper amount of information please forgive.
Thank you in advance for the guidance and assistance.