Bell Cranks & Levers

Bell cranks and levers are simple, foundational mechanical parts that use pivoting action to redirect force or motion.
Here is the simple breakdown of what they do:
• Pivoting Action (Fulcrum): Both operate around a single fixed pivot point (like a seesaw or a crowbar).
• Redirects Force: Their main job is to change the direction of force or movement.
o A lever typically straightens or amplifies a movement (like prying open a lid with a spoon).
o A bell crank is specifically designed to make a sharp angle turn (often 90 degrees), converting a vertical pull into a horizontal push (or vice versa).
• Multiplies Power: By positioning the pivot point correctly, you can use a small amount of effort to move a heavy object a short distance (mechanical advantage).
In short, bell cranks and levers are simple hinged mechanisms used to change the direction, speed, or strength of a force in a machine system.