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.
Spiral and Radial Slot Crank: Adjustable Throw and Stroke
Explore a crank pin at the intersection of radial and spiral slots. Calculate throw and stroke with an assumed Archimedean spiral; locking and adjustment under...
Two-shaft Slotted Crank: Ideal Offset and Speed Calculator
Explore a crank pin sliding in a radial follower slot. Calculate normalized shaft offset and ideal speed extrema from a selected fast-to-slow ratio and input...
Two Crank-disks Traverse: Brown Movement 122 and Vector Comparison
Explore Brown movement 122 and compare the resultant of two equal vectors at three included angles. These vector magnitudes do not determine the historical bar...
Treadle with Cord and Pulley: Ideal Diameter Comparison
Compare effective driver and driven pulley diameters, circumferences and ideal speed ratio. Actual RPM requires a shaft-speed input and real transmission behavior.
Treadle to Disk via Connecting Rod: Ideal Geometry Comparison
Explore a treadle-and-pitman arrangement beside a simplified in-line slider-crank angle comparison. The calculation does not solve the full treadle linkage.
Swinging-block Linkage: Ideal Angle-ratio Calculator
Compare ideal larger and smaller crank-angle intervals and their constant-speed time ratio from entered crank radius and center offset.
Spring-return Treadle to Pulley Mechanism: How It Works, Parts, Diagram, and Uses Explained
Spring-return treadle to pulley converts foot strokes into shaft rotation via a crank and return spring. Sizing, formulas, and real workshop examples.
Slotted Main Crank with Elliptical Pin Orbit Mechanism: How It Works, Parts, Diagram and Uses
Slotted main crank with elliptical pin orbit explained — geometry, motion equations, and a worked example for textile loom batten drives at 220 RPM.
Slotted Cross-head with Sliding Journal Box: How It Works, Diagram, Parts, Formula and Uses Explained
Explore a slotted cross-head and sliding journal box with an animated calculator for stroke, position, velocity and acceleration.
Slotted Connecting Rod with Rest at End: Mechanism, Diagram, Formula, and Uses Explained
Explore a crank pin moving through a slotted connecting rod. Compare selected slot travel, ideal slide stroke, rest share and rest time.
Single Revolution Per Stroke Mechanism: How Punch Press Clutches Work, Parts, Formula, and Uses
Single revolution per stroke mechanisms convert one input rotation into one output cycle — used in punch presses, packaging, and stamping machines.
Reciprocating-rack Crank Substitute Mechanism Explained: How It Works, Parts, Formula and Uses
Explore Brown movement 119 with an endless rack and guided pinion. Calculate cycle time and mean rack speed from stroke and full-cycle rate.
Crank-and-Slotted-Lever Quick Return: Geometry and Timing
Explore a crank-and-slotted-lever quick-return mechanism and calculate working and return sweeps, time ratio and durations from its fixed-center geometry.
Inverted Slider-Crank: Oscillating-Axis Swing Calculator | FIRGELLI
Calculate the angular envelope of an oscillating axis from crank radius and trunnion spacing, with an explicit C greater than r condition. Piston travel and...
Engine Uncoupling via Slotted Ring (form 2): How the Declutch Mechanism Works, Parts and Diagram
Explore disengaged slotted-ring coupling geometry. Compare pin diameter, slot width and conservative clearance for the pin’s curved passage.
Engine Uncoupling via Slotted Ring (form 1): How the Mechanism Works, Parts & Uses Explained
Explore engaged slotted-ring coupling geometry. Compare pin diameter, slot opening, backlash take-up and ideal torque from a wall-normal force.
Endless-spiral Cylinder Crank Substitute Mechanism: How It Works, Diagram, Formula & Uses
Explore a closed helical barrel cam with rounded reversals. Calculate stroke, cycle rate, mean axial speed and straight-flank clearance play.
Endless-groove Disk and Vibrating Arm Mechanism: How It Works, Parts, Diagram and Uses
Explore a grooved face cam driving a fixed-length oscillating arm. Compare chord travel, swing angle, groove width and local centreline curvature.
Drag-link Mechanism (d-class): How It Works, Parts, Formula & Quick-Return Uses Explained
Explore a D-class drag-link four-bar: adjust the four link lengths to compare output speed, Grashof classification and equal-angle half-turn times.
Double-rack Crank Substitute Mechanism: How It Works, Parts, Formula, and Industrial Uses Explained
See a double rack shift around a fixed pinion while its output slides straight. Calculate stroke, transverse travel, speed and full cycle time including reversals.
Crank-disk with Toothed Sector and Rack: How the Mechanism Works, Parts, and Uses Explained
Explore a crank-driven slotted rocker with a toothed sector, rack and rope-driven weight. Calculate rocker swing, rack stroke, sector pitch radius and tooth pitch.
Crank with Treadle Mechanism Explained: How a Foot Pedal Drives Rotary Motion, Parts, Diagram
Explore a foot treadle, pitman and crank. Calculate target foot stroke, crank throw, pitman ratio and peak downstroke torque for the stated mounting geometry.
Crank to Oscillating Rod Reciprocating Mechanism: How It Works, Diagram, Formula & Uses
Explore a crank-driven oscillating rod. Calculate output angular range, one-way tip arc, minimum transmission angle and full-turn closure from four link lengths.
Continuous Rotary via Two Paired Link Cranks: How the Mechanism Works, Parts & Uses Explained
Explore two crank pairs connecting parallel shafts. Compare phase offsets and normalized torque contributions from two ideal equal-force coupling rods.