Recent Blogs
Yoke-bar Reciprocator From Disk Crank: How It Works, Diagram, Formula and Uses Explained
Watch a disk crank drive a guided yoke. Compare ideal position, stroke, velocity and acceleration from crank radius, angle and rotational speed.
Reciprocating Motion: Whitworth-type Quick-return Timing Comparison
Compare assumed working and return crank sweeps at constant input speed. The diagram illustrates a quick-return linkage; actual carriage stroke is not solved.
Scotch Yoke Mechanism: How It Works, Diagram, Formula, Calculator and Uses
Scotch Yoke mechanism explained — how it converts rotary to linear motion, real engineering formulas, applications in valve actuators, pumps and engines.
Reciprocal Circular Motion Mechanism Explained: How It Works, Parts, Formula and Uses
Explore a four-bar crank-rocker with an interactive linkage diagram. Calculate ideal rocker swing, cycle rate and full-revolution closure from pin-centre distances.
Intermittent Reciprocating Motion: Dwell Time Calculator | FIRGELLI
Convert a total dwell angle and constant input rpm into cycle, dwell and non-dwell time. Rack travel and gear engagement are illustrative.
Rectilinear Vibrating Motion Mechanism: How It Works, Scotch Yoke Diagram, Formula and Uses
Explore Scotch-yoke motion and calculate stroke, amplitude, cycle frequency and peak slider speed from crank eccentricity and shaft RPM.
Variable Throw: Compare Two Ideal Traversing Strokes
Compare ideal crank-projection strokes for two entered radii, including their signed difference and percentage change. The tool does not design a live radius-adjustment or traverse...
Elliptical Gear and Slotted Bar: Ideal Phase and Projection
Explore equal elliptical pitch curves with an illustrative slotted bar. Calculate ideal speed ratio and a separate cosine projection; actual bar motion and loads are...
Alternating Motion Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained
Explore a sector pinion driving opposing racks. Calculate theoretical pitch-arc travel and cycle rates, including the difference between dwell and interfering settings.
Shuttle Motion Mechanism: How Slider-Crank Reciprocation Works, Parts, Uses & Diagram
Explore a generic crank-driven shuttle carriage on straight guides. Calculate stroke, rod length, cycle rate and mean speed from selected dimensions.
Slotted Cross-head Mechanism: How It Works, Parts, Formula, and Uses in Steam Engines
Explore a crank pin and sliding bearing box in a slotted cross-head. Calculate selected-angle velocity, peak speed, stroke and transverse pin offset.