Recent Blogs
Stud-and-Hole Clutch: Animation and Index Calculator | FIRGELLI
See one radial pin couple two rotating members. Calculate hole pitch, arc spacing, pin area and an ideal torque estimate from an entered shear-stress assumption.
Helical Gear Pair: Ideal Force-Component Calculator | FIRGELLI
Calculate tangential and axial force magnitudes from torque, pitch diameter and helix angle. Contact ratio is entered, and gear strength and bearing life are not...
Sprocket and Chain Drive Mechanism Explained: How It Works, Parts, Diagram, Formula and Uses
How a Sprocket and Chain Drive transmits torque without slip — pitch, ratio, and chain tension explained for conveyor, motorcycle, and robotics builds.
Chain and Pulley (form 1) Mechanism Explained: How It Works, Diagram, Parts and Uses
See alternating-plane chain links engage a toothed wheel. Separately compare a load with hand pull to calculate the overall force ratio a complete system would...
Open Belt Drive: Brown Movement 1
Explore same-direction rotation in an open belt drive. Calculate ideal belt speed and driven-pulley speed from pitch diameters and driver speed.
Round-rope Drive Mechanism: How It Works, V-Groove Wedge Friction, Parts and Uses Explained
Round-rope Drive explained — how rope-and-grooved-pulley power transmission works, the math behind it, and real applications from textile mills to mine haulage.
Quarter-Turn V-Belt Drive: Gates Guideline Comparison
Quarter-turn Belt Drive explained — how the 90° twist transmits power between perpendicular shafts, design rules, and real industrial applications.
Cone-drive Ratio: One-point Pitch-diameter Comparison
Compare one pair of effective pitch diameters and an entered target sum. Calculate ideal ratio and reciprocal torque factor; cone profiles, belt length and sheave...
Toothed Link Chain and Pulley: Ideal Speed and Pitch Geometry
Calculate mean pitch advance, pitch-circle diameter and tooth-passage rate from chain pitch, tooth count and RPM. Drive capacity and service life are not modeled.
Shifting Device for Cone Pulleys: How It Works, Parts, Diagram, and Speed Ratio Calculator
How a shifting device for cone pulleys works on lathes, drill presses, and line-shaft machinery — belt fork geometry, ratio steps, and worked sizing example.
Jumping Motion: Spring-and-Latch Average Power Calculator | FIRGELLI
Calculate interval-average power from entered energy and release time. An illustrative spring-and-latch sequence explains energy release without predicting jump height, force or peak power.
Curved Cone Pulleys Mechanism: How It Works, Parts, Formula, and Uses Explained
Explore opposed curved cone pulleys and calculate speed ratio, output speed, driver surface speed and ideal torque ratio at one selected belt station.
Synchromesh: Ideal Single-cone Synchronization Calculator
Explore ideal cone torque, time and relative kinetic energy using entered cone conditions and a fixed equivalent inertia. Results are explanatory scenarios.
Right Angle Shaft Transmission Mechanism: How It Works, Bevel Gear Parts, Uses & Calculator
Calculate speed, torque and power for a right-angle bevel pair from tooth counts and input conditions. Explore reduction, speed increase and assumed efficiency.
Friction Clutch in a Bevel Drive: Torque Comparison | FIRGELLI
Explore a friction-coupled bevel drive and compare ideal flat-interface torque with demand, including a fixed 1.4× preload scenario.
Belt Shipper Mechanism Explained: How It Works, Parts, Diagram, Animation, and Fast/Loose Pulley Uses
Explore a belt shipper’s fork, guided rod and lever. Calculate the ideal force component from equal belt-span tensions and compare lever ratios.
Vertical Tension Carriage: Take-Up Animation and Travel Calculator
Explore a movable-pulley carriage and compare an entered travel allowance with available stroke. Calculate the ideal two-leg belt-length change.
Variable Rotary Motion: Ideal Equal-ellipse Gear Speeds
Explore matched equal elliptical pitch curves and calculate cyclic ideal output speed from input speed, eccentricity and phase. Teeth, loads, stress and machine performance are...
Belt Transmission: Ideal Speed and Efficiency-adjusted Torque
Calculate no-slip belt speed ratio and output speed from pitch radii. Compare torque using an entered efficiency; traction, sheave adjustment and drive capacity are not...
Variable Eccentric: Ideal Circular-motion Force Calculator
Explore an offset sleeve and entered net eccentricity. Calculate ideal point-mass radial force, acceleration and frequency; follower, bearing and lock loads are not calculated.
Double-helical Gear: Ideal Axial-force Comparison
Compare opposed axial-force components from entered tangential load, helix angles and load share. Actual contact, load sharing and bearing requirements are not solved.
Uniform Intermittent Motion: External Geneva Step and Dwell
Explore a standard external Geneva drive. Calculate ideal step angle, accumulated travel and dwell share from slot count and completed driver turns.
Two-speed Gear: Ideal Ratio Comparison Calculator
Compare two ideal gear ratios and their speed and torque relationships. See a schematic sliding jaw clutch select between two gear paths.
Two Revolutions for One Stroke: Hiscox Toggle Mechanism
Explore Hiscox movement 138i and its stated two wheel revolutions per input stroke. Illustration proportions do not determine forces or a complete linkage motion law.
Reciprocating Transmission: In-line Slider-crank Geometry
Calculate stroke, rod length, slider displacement and full-cycle mean speed for an ideal in-line slider crank. Forces and machine performance are not modeled.