Recent Blogs
Ghassaei Walking Linkage: Foot-Path Animation and Calculator
Follow Amanda Ghassaei’s crank-driven leg geometry and calculate its scaled foot-path width, lift, fixed-pivot spacing and cycle time.
Helping Crank: Phase and Arc Geometry Calculator | FIRGELLI
Compare two ideal crank phases, convert an angular band to arc length, and inspect a normalized sine factor. Available torque, full linkage motion and starting...
Spring Lathe-wheel Crank Mechanism Explained: How It Works, Parts, Diagram & Formula
Spring Lathe-wheel Crank explained — how the spring-loaded return powers a foot-treadle lathe, with formulas, sizing examples and real workshop applications.
Brownell Crank Motion: Tangent-slide Geometry and Treadle Calculator
Explore Brownell’s spring-biased tangent-slide crank. Compare wrist radius, phase and treadle motion with a selected slide offset held during each revolution.