Recent Blogs
Epicyclic Train (form 4) Explained: Step-Up Planetary Gearbox Mechanism, Diagram & Formula
Explore a carrier-driven planetary step-up with fixed ring and sun output. Compare speed multiplication and ideal torque fraction from ring and sun tooth counts.
Epicyclic Train (form 1) Mechanism Explained: How It Works, Parts, Willis Ratio and Uses
Explore a fixed-ring planetary reduction. Derive planet teeth from sun and ring counts, then compare carrier speed and ideal torque multiplication.
Epicyclic / Planetary Gear Train: How It Works, Parts, Ratio Formula, Diagram and Uses Explained
Explore a fixed-ring planetary reduction and check tooth-count compatibility. Compare sun input, carrier speed and required planet geometry.
Elliptical Spur Gears: Animation and Variable-Speed Calculator
Explore matching focal elliptical gears and calculate live pitch radii, speed ratio and output rpm through one variable-speed revolution.
Eccentric Wheel Train Mechanism Explained: How It Works, Diagram, Parts, Formula, and Uses
Explore the fixed inclined bevel wheel and carried compound shaft of an eccentric wheel train, with an exploded animation and illustrative reversing-speed calculator.
Eccentric Spur-gear with Link Control Mechanism Explained: How It Works, Parts, Diagram & Uses
Explore an eccentric three-gear train with linked centers. Adjust offset, module and input speed to calculate the varying output speed and see both gear meshes.
Eccentric Gear Train: Elliptical Planetary Animation and Pointer Calculator
Explore Hiscox’s eccentric gear train with linked elliptical and circular gear animations. Calculate signed shaft speeds and reversing pointer travel.
Doubling Shaft Revolutions: Historical Six-Bevel Train and Motion Calculator
Follow a six-bevel gear train with a reversing sleeve and moving carrier. Compare input, sleeve, planet and output revolutions for the illustrated connections.
Doubling the Length of a Crank Stroke: How the Rack-and-Pinion Mechanism Works
Explore a crank-driven rack stroke doubler. Set crank radius, rod length and pinion size to calculate output stroke, live speed and sampled peak speed.
Doubling Stroke Length via Rack and Pinion: How the 2:1 Motion Multiplier Mechanism Works
Explore a travelling pinion between fixed and moving racks. Calculate doubled stroke and speed, ideal output force, pinion rotation and transmitted power.
Doubling Speed with Equal-diameter Bevel Gears (six-gear): How the Mechanism Works, Parts & Uses
Explore six equal bevel gears, a reversing sleeve and moving carrier. Calculate the three-to-one output for the illustrated shaft connections.
Doubling a Revolution on Same Shaft: How the Coaxial 1:2 Gear Mechanism Works
Explore Entwistle’s coaxial bevel speed doubler. A moving pinion carrier and fixed side gear produce two output turns per input turn.
Disk-wheel and Spur Gear (rotary at Right Angles): How the Right-Angle Mechanism Works
Explore a single-start face-spiral disk driving a perpendicular spur wheel. Calculate reduction, output speed and steady torque and power-loss estimates.
Differential Speed: Fixed-Idler Gearing and Coaxial Counter-Rotation
Explore a fixed-idler gear train with coaxial counter-rotation. Calculate the required ring tooth count, signed idler and output speeds, and reduction ratio.
Differential Screw and Gear Movement: How It Works, Diagram, Formula, and Precision Uses
Explore a gear-driven differential feed with a rotating screw and nut. Calculate signed travel from one screw lead and two gear ratios.
Differential Motions Explained: How a Bevel Differential Works, Parts, Formula, and Uses
Explore an open bevel differential. Calculate output speeds, equal ideal side torques and signed powers from carrier speed, transmitted torque and speed difference.
Crown Wheel and Spur Gear Mechanism: How It Works, Parts, Diagram and Right-Angle Drive Uses
Explore a crown wheel and perpendicular spur pinion. Calculate output speed, torque and power loss from tooth counts, input speed, torque and assumed efficiency.
Continuous Shaft Motion Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses
Explore a rigidly coupled shaft drive. Calculate angular speed, input power and useful load torque and power using an entered overall transmission efficiency.
Continuous Rotary via Ratchet Bevel Gears: How It Works, Parts, Diagram, and Uses Explained
Explore opposed ratchets and bevel gears that drive one output on both rocking strokes. Compare average speed, angular advance and an entered take-up allowance.
Continuous Rotary Motion Mechanism: How It Works, Diagram, Formula, and Belt-Drive Calculator
Explore an open belt drive. Calculate output RPM, effective diameter ratio, ideal torque multiplication and speed reduction or increase from two pulley sizes.
Compound Gear Train Mechanism: How It Works, Diagram, Formula, and Uses Explained
Explore a two-stage compound gear train. Adjust four tooth counts and input speed to calculate stage ratios, overall reduction and output speed.
Compound Epicyclic Train: Carrier Input, Gear Ratios, Animation and Calculator
Explore a carrier-driven compound epicyclic train with two internal rings. Compare all four tooth counts, output direction, speed ratio and required module ratio.
Complex Alternating Reciprocal Motion Mechanism Explained: How It Works, Parts, Diagram and Uses
Explore compound reciprocation from a fixed sun, equal planet gear and slotted yoke. Calculate slider position, span and additional reversals as the pin offset changes.
Click-driven Cog-wheel Feed Mechanism: How It Works, Parts, Formula and Indexing Uses Explained
Animate an oscillating carrier and click feed. Calculate indexed angle from cog tooth count, teeth advanced per stroke and batch strokes, with a separate holding...
Circular Rack: Annular Shaft Teeth, Axial Motion and Pinion Travel Calculator
See how a side pinion moves a straight shaft with ring-shaped rack teeth. Calculate axial travel, pitch spacing, equivalent tooth count and rack diameter.