Recent Blogs
Chinese Windlass Mechanism Explained: How It Works, Diagram, Formula, Parts and Uses
Compare two drum diameters on one shaft. Calculate ideal hand force, shaft torque and rise per turn, and see why closer diameters give slower lift...
Spanish Barton (form 2) Mechanism Explained: 5:1 Compound Pulley Parts, Formula & Rigging Uses
Spanish Barton form 2 rigging explained — how stagehands and riggers achieve 5:1 mechanical advantage with two single blocks to lift heavy loads safely.
Spanish Barton (form 1) Mechanism Explained: 5:1 Compound Pulley Diagram, Parts and Uses
How the Spanish Barton form 1 tackle works, its 5:1 mechanical advantage, rigging formula, and worked example for lifting heavy loads in arborist and rescue...
Movable-Pulley Cord System (a): Fixed 2:1 Reeving Ledger
Movable pulley systems with cord cut lifting force in half or more. Learn the mechanical advantage formula, real rigging examples, and design tradeoffs.
Weston Differential Pulley Block: Ideal Travel and Force Ledger
Learn how pulleys combined with a differential gear split torque between two outputs. Engineering breakdown, formula, worked example, and real industrial uses.