Recent Blogs
Evans Grasshopper Linkage: Coupler-Path Calculator | FIRGELLI
Explore an Evans four-bar linkage with an approximately straight coupler path. Compare link scale, crank sweep, traced stroke and lateral wander.
Chebyshev Approximate Straight-Line Linkage: Exact Four-Bar Closure
Quadrangular rectilinear motion explained — how a four-bar linkage produces straight-line output, with formulas, tolerances, and real packaging-line examples.