Recent Blogs
Frictional Rectilinear Motion Mechanism Explained: How It Works, Diagram, Formula & Uses
Frictional rectilinear motion transmits power through pressed surfaces sliding in a straight line. See how it works, formulas, and real industrial uses.
Equalizing Thrust Mechanism: How It Works, Diagram, Parts, Uses, Formula and Calculator
Explore crossed links connecting a rocking pump beam to a guided rod. Calculate ideal beam travel, lateral sweep, offset ratio and reference pivot moment.
Elastic Spur Gear Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses
See a toothed rim wind against a spring-coupled shaft center. Calculate relative angle, stored energy, arc displacement and tangential force from supplied stiffness.
Eccentric Crank Mechanism Explained: How It Works, Diagram, Parts, Formula and Uses
Eccentric crank explained — how the offset shaft converts rotary motion into reciprocating linear motion in pumps, presses, and steam locomotive valve gear.
Dual-clutch Transmission Mechanism: How It Works, Parts, Diagram, Formula and Uses Explained
Explore a two-stage dual-clutch upshift with preselected gear pairs. Calculate endpoint speeds, output torque and slip energy with engine-side inertia.
Cycloidal Drive Mechanism: How It Works, Diagram, Parts, Formula, and Robotics Uses Explained
Explore a cycloidal reducer with an eccentric disc, fixed ring rollers and output pins. Calculate reduction, signed output speed, eccentricity and roller diameter.
Crown Wheel Mechanism: How It Works, Diagram, Gear Ratio Formula and Uses Explained
Explore a crown wheel and perpendicular spur pinion. Compare tooth counts, input/output revolutions, speed ratio and ideal torque multiplication.
Cross Lacing Mechanism Explained: Figure-8 Flat Belt Drive, Wrap Angle and Capstan Formula
Compare limiting belt tension ratios for crossed and open contact cases using friction and entered wrap angles. This tool does not size the lacing that...
Continuously Variable Transmission (CVT) Mechanism: How It Works, Parts, Diagram & Uses
Explore variable pulley contact radii in a CVT. Compare ideal output speed and torque, with the fixed-belt constraint explained alongside independent radius inputs.
Cone-and-disk Variable Speed Mechanism: How It Works, Diagram, Parts, Formula and Uses
Explore a cone-input friction drive. Move the disk contact point and compare contact radius, output speed and ideal torque ratio.
Combination of Friction Gear Mechanism: How It Works, Diagram, Parts, Formula, and Uses Explained
Compare three friction-wheel diameters and their ideal speed ratios. See why the idler changes its own speed and shaft spacing while the final ratio stays...
Capstan or Vertical Windlass Mechanism Explained: How It Works, Parts, Diagram, and Uses
Explore rope friction around a vertical capstan. Adjust tail tension, friction coefficient and turns to calculate an ideal impending-slip tension limit.
Belting to a Shaft at Any Angle: Guided Flat-Belt Geometry and Animation
Explore a 60-degree flat-belt route with two independently oriented guides. Change pulley sizes and centre spacing to compare geometry and dimension references.
Belt Transmission Mechanism Explained: How It Works, Diagram, Formula, Parts and Uses
Calculate driven RPM, speed ratio, reduction and belt speed for an ideal open-belt drive. Explore how pulley pitch diameters change the animation and results.
Belt Lacing Mechanism: How Conveyor Belt Splice Fasteners Work, Parts, Diagram and Uses
See how wire hooks join belt ends around a hinge pin. Compare cut squareness and belt width geometrically; fastener strength and approved tolerances are not...
Axial-to-rotational Motion Conversion Mechanism: How It Works, Diagram, Formula and Uses
See a guided nut drive a helical shaft and calculate rotation from stroke and lead. Compare turns, radians and degrees per millimeter, with backdriving limits...
Vibratory Motion: Ideal Rotating-unbalance Force Calculator
Compare the ideal force magnitude from a rotating eccentric mass. Machine response, displacement and resonance require additional stiffness and damping data.
Grooved Friction Gearing: V-Groove Force Calculator | FIRGELLI
Resolve normal force on each flank of a symmetric V-groove from radial load and half-angle. Includes a worked example and clear limits on traction and...
Friction Gear: Contact Torque and Load Comparison | FIRGELLI
Calculate a friction-wheel torque limit from coefficient, normal force and driven radius, then compare it with load torque. Explore rolling-contact motion.
Alternating Circular Motion Mechanism: How It Works, Crank-Rocker Diagram, Parts and Uses
Explore a crank-rocker converting full rotation into angular oscillation. Compare crank-length error using an explicit assumed sensitivity separate from the animated geometry.
Variable-speed Relation: Ideal Pitch-radius Calculator
Compare two effective pitch radii to calculate ideal output speed, percentage change and reciprocal torque factor. The open-belt illustration does not design gear teeth or...
Wittgenstein's Rod: Clearance and RSS Error-budget Calculator
Compare entered rod clearance, pin play and straightness with an assumed root-sum-square budget. The tool does not solve linkage motion or production tolerances.
Watt Six-bar Linkage: Mobility Count and Dwell-time Comparison
View a fixed illustrative Watt I six-bar. Calculate generic planar mobility and convert an entered interval to cycle angle and percentage at constant speed.
Watt's Linkage: Illustrated Path and Cubic Comparison
View the midpoint path of a fixed illustrative Watt four-bar. Compare an assumed cubic expression with an entered allowance; it is separate from the drawn...
Twelve-bar Linkage: Planar Mobility Count Calculator
Calculate the planar lower-pair mobility count from link and joint totals. Connection geometry and constraint independence must be checked separately for a real linkage.