Recent Blogs
Transmission of Two Speeds: Ideal Ratio Comparison
Compare two entered input-to-output speed ratios and their ideal torque multipliers. The calculator does not define a gearbox or simulate shifting.
Rotary Motion Transmission: Ideal External Spur-gear Pair
Calculate ideal speed, torque and direction ratios for one compatible external spur-gear pair. Tooth geometry, efficiency and load capacity are not evaluated.
Belt Drive Power Transmission: Speed Ratio, Torque and Power
Compare two pulleys using effective diameters, driver speed and torque. Apply an entered efficiency to power while retaining the ideal no-slip speed ratio.
Bell Crank Transmission: Ideal Force and Arc-travel Calculator
Explore a rigid bell crank. Compare ideal tangential force ratio and circular pin travel from two arm lengths and a shared rotation angle.
Toroidal CVT: Roller Arrangement and Ideal Contact-radius Ratios
Explore opposed discs and tiltable rollers. Compare ideal speed and torque magnitudes from contact radii without predicting transmission efficiency or capacity.
Three-crank Link: Ideal Triangular-link Motion
Explore Hiscox movement 117 with driving, driven and relief cranks joined by a triangular link. Calculate ideal translation with equal parallel cranks.
Strain-Wave Gearing: Animation and Ratio Calculator | FIRGELLI
Explore a fixed circular spline, wave-generator input and flexspline output. Calculate tooth difference, reduction and signed output travel.
Stop Driving and Reversing Motion: Belt Selector and Bevel Drive
Explore a single-belt forward, neutral and reverse selector. Compare ideal output speed and belt speed for Hiscox movement 95.
Step Gear Mechanism: How It Works, Diagram, Parts, Ratio Formula and Lathe Headstock Uses Explained
Step Gear explained — how stepped gear ratios transmit power across multiple speeds, with formulas, worked examples, and real shop applications.
Split Spur Gear Mechanism Explained: How It Works, Diagram, Parts, Uses, Formula and Calculator
Split Spur Gear explained — how the spring-loaded anti-backlash design eliminates lash in servo drives, indexing tables, and CNC rotary axes. Specs, formulas, examples.
Spiral Gearing Mechanism Explained: How It Works, Parts, Spiral Bevel and Hypoid Gear Uses
Spiral gearing transmits power between non-parallel shafts with curved teeth. Learn how it works, the formulas, and where it shows up in real machinery.
Skew Worm and Wheel Gear Mechanism Explained: How It Works, Diagram, Parts and Uses
Skew worm and wheel gear explained — how the offset axis transmits power, sizing formulas, and real industrial uses in conveyors, mixers, and packaging lines.
Sequential Manual Transmission Mechanism: How It Works, Shift Drum Parts, Formula and Uses
Sequential manual transmissions shift gears in a fixed up-down order through a drum and forks. Used in motorcycles, race cars, and karts — here's how...
Sectional Belt Lacing Mechanism: How It Works, Parts, Splice Tension Formula and Calculator
Sectional belt lacing joins conveyor belts mechanically without vulcanising. Learn sizing, installation, and failure modes used in mining and bulk handling.
Rope Sprocket Wheel Mechanism: How It Works, Parts, Capstan Formula and Uses Explained
Rope sprocket wheels transmit power by gripping rope in shaped pockets. Learn how they work, sizing math, and uses in elevators, mining, and marine winches.
Reversing Lever: Gear Direction and Pitch-Diameter Calculator
Compare direct and idler gear paths, understand their rotation directions, and calculate pitch diameter from tooth count and diametral pitch.
Gear Direction and Speed: Three-Gear Idler Train Calculator
Calculate ideal speeds in a three-gear idler train. See why two external meshes leave the output turning in the same direction as the input.
Registering Dynamometer Mechanism Explained: How It Works, Parts, Diagram, Formula and Uses
Calculate mean torque, work per load cycle and mean power for two repeating torque levels at constant shaft RPM, with a schematic mechanical recorder.
Weston Differential Pulley Block: Ideal Travel and Force Ledger
Learn how pulleys combined with a differential gear split torque between two outputs. Engineering breakdown, formula, worked example, and real industrial uses.
Pulley-and-Belt CVT: Instantaneous Pitch-Radius Ledger
Pulley-and-belt CVT explained — how variable-pitch sheaves and a steel push belt deliver stepless ratio change in scooters, snowmobiles and Toyota hybrids.
Parallel Plyers: Exact Parallelogram Jaw Geometry
Explore ideal parallel-jaw geometry using an equal-link parallelogram. Calculate horizontal offset, jaw separation, parallelism and the long diagonal.
Over-and-Over Belt Lacing: Historical Path Geometry
Explore the over-and-over belt-lacing route. Calculate hole count, row span, segment count and ideal planar path length from paired holes, pitch and gap.
Oblique Tooth Gear: Hiscox Inclined-Tooth Pair
Explore inclined teeth on parallel shafts. Calculate ideal torque, tangential force and axial thrust from transmitted power, shaft speed, diameter and helix angle.
Oblique Spur and Bevel Gear: Hiscox Mixed Gear Pair
Explore Hiscox's mixed oblique spur-and-bevel gear pair. Calculate ideal rotation ratio and nominal reference diameters from tooth counts and module.
Oblique Rollers: Brown's Waisted Rolling-Contact Pair
Explore Brown's waisted rollers on oblique shafts. Calculate ideal driven speed, speed ratio and tangential contact speed from entered effective radii.