Recent Blogs
Carburetter Mechanism Explained: How It Works, Parts, Diagram, and Jet Sizing Calculator
Explore a float-type carburettor’s main fuel circuit. Compare equivalent jet bore and fuel flow at an entered air mass flow, mass ratio and effective fuel...
Caloric Engine Mechanism Explained: How Hot-Air Engines Work, Parts, Diagram and Uses
Explore a gamma-type Stirling engine with separate displacer and power piston. Compare temperatures, ideal-cycle regeneration and crank phase in the interactive calculator.
Automatic Oiler Mechanism: How It Works, Cross-Section Diagram, Parts and Calculator
Explore a mechanically driven plunger oiler and calculate ideal oil delivery, stroke interval and reservoir duration from speed, drive ratio and oil volume per stroke.
Adjustable Link Mechanism: Threaded Length Adjustment and Lever-Angle Calculator
Explore threaded link-length adjustment, turns per millimeter and separate lever-angle sensitivities. The calculator does not predict engine speed or full linkage motion.
Gasoline Motor Car: Four-Stroke Cycle Calculator | FIRGELLI
Follow four-stroke piston motion and calculate crank revolutions, cam revolutions and cycle equivalents from an entered angle and cylinder count.
Worm-gear Jumping Motion with Weight Mechanism: How It Works, Diagram, Parts and Uses
Explore a weight-driven worm-gear jumping mechanism. Compare ideal gravity torque and assumed resistance at a selected arm angle.
Worm-gear Jumping Motion with Tumbler Explained: How It Works, Parts, Uses, and Step-Rate Formula
Explore worm-and-tumbler indexing. Compare step angle, steps per minute and ideal engagement time from your entered tooth count and cycle settings.
Worm-gear Jumping Motion with Cam Mechanism: How It Works, Parts, Uses & Snap Energy Formula
See how a worm-driven cam loads and releases a spring follower. Compare ideal spring forces and stored energy from your entered spring settings.
Watch-Winding Stop Form 3: Animation and Turn-Count Calculator
Compare two entered winding-turn references, their midpoint and span, and convert the midpoint into ideal advances and cumulative arbor rotation.
Watch-Winding Stop Form 2: Animation and Angle-Count Calculator
Explore a Geneva-type winding-stop illustration and calculate equal notch pitch, angular spans in pitches and remaining entered advances.
Vibrating-Arm Pawl Ratchet: Animation and Indexing Calculator
Calculate ideal step angle, average wheel speed and strokes per revolution from ratchet tooth count, assumed teeth per stroke and stroke rate.
Two-pawl Ratchet Bar: Alternating Action and Mean-rate Calculator
Explore two pawls acting alternately on a ratchet bar. Compare ideal mean advance from entered pitch, action rate and effectiveness.
Two Ratchet Arcs: Brown Movement 83 and Ideal Angular Advance
Explore opposed ratchet arcs on a common rockshaft. Compare ideal advance and average speed from an assumed effective sweep; tooth engagement and torque are not...
Treadles and Chain to Ratchet Wheel: Angular Pitch Comparison
Compare an entered rocker sweep with uniform ratchet tooth pitch. Count complete pitch intervals and remaining angle without predicting pawl engagement under load.
Tilt Hammer: Ideal Cam-wiper Event Timing
Explore a camshaft lifting and releasing a pivoted hammer. Calculate ideal event timing from wiper count and shaft speed; impact energy and real motion are...
Tappet-arm Ratchet: Ideal Intermittent Indexing Calculator
Compare ideal ratchet pitch, step rate, wheel speed and accumulated steps. The tool assumes successful engagement and does not predict pawl reliability.
Tappet-and-stud Counter Wheel: Ideal Indexing Calculator
Calculate ideal pitch, accumulated steps, final index and wheel turns from entered positions and stud passes. Every pass is assumed to complete one step.
Tappet-stud Revolution Counter: Entered Count Comparison
Compare verified revolutions and logged counts against an ideal one-count-per-revolution reference. Differences do not identify mechanical faults.
Star-wheel Ratchet Mechanism: How It Works, Parts, Diagram, and Indexing Formula Explained
Star-wheel Ratchet mechanism explained — how the spring-loaded detent indexes a pointed rotor one step per stroke, with formulas, real machine-shop examples, and design rules.
Single-tooth Small Wheel to Large Intermittent Mechanism: How It Works, Parts, Formula & Uses Explained
How a single-tooth driver indexes a large count wheel one notch per revolution — geometry, sizing math, and a worked sawmill tally counter example.
Single-tooth Small Driver, Lock by Rim Mechanism Explained: How It Works, Parts, and Diagram
Single-tooth small driver with rim lock: how this intermittent counter wheel indexes one notch per input revolution, with formulas, examples, and trade-offs.
Single-tooth Driving Wheel and Notched Wheel: How This Intermittent Indexing Mechanism Works
How a single-tooth driving wheel and notched wheel produce 1-step-per-revolution intermittent motion for counters, score reels, and dispensers — with formulas and worked examples.
Reversing Ratchet Mechanism: How It Works, Parts, Diagram, and Tooth-Count Formula
See how a reversible ratchet changes drive direction. Compare angular tooth pitch for three tooth counts and distinguish tooth spacing from backlash and handle swing.
Reciprocating to Intermittent Circular via Pawl Mechanism: How It Works, Parts, Diagram, and Uses
Explore a reciprocating drive pawl and locking pawl. Calculate tooth pitch, pitch-circle arc and accumulated rotation for completed one-tooth strokes.
Ratchet-wheel Stops: Tooth Pitch, Pawl Engagement and Resolution Calculator
Compare ratchet-wheel tooth counts and ideal pitch angles. Explore seated pawl contact, angular resolution and the limits of a tooth-spacing calculation.