Recent Blogs
Electric Generator Construction Explained: Stator, Rotor, Air Gap Parts and How It Works
Explore a two-pole rotating-field generator and compare nominal air gap, diametral bore allowance, concentric radial clearance and electrical frequency.
Electric Fusible Cut-out: Interruption Sequence and Current Comparison
See an expulsion fuse cutout’s internal interruption and tube dropout. Compare nominal single-phase transformer current with an entered fuse-link rating.
Electric Fan Mechanism Explained: How It Works, Parts, Affinity Laws, Diagram & Calculator
Explore an axial fan and compare airflow and shaft power at another speed using supplied reference data and the fan laws. Motor and drive losses...
Electric Escapement Mechanism: How It Works, Parts, Diagram, and Industrial Uses Explained
Watch a make-and-break electric escapement index on both circuit transitions. Calculate tooth step, pulse-batch rotation and speed with two alternating driving pawls.
Electric Car Brake Mechanism Explained: How EV Regenerative and Friction Braking Works
Compare how available regeneration and friction braking meet a requested deceleration. See the energy paths and each contribution in a generic electric-car layout.
Consequent-pole Compound Generator: How It Works, Parts, Diagram & Voltage Regulation
Explore a consequent-pole generator field and a separate compound-connection diagram. Compare no-load, target and measured full-load voltages.
Car Truck Motors: Streetcar Axle Motors, Diagram and Specific Power Calculator
Explore directly connected motors on historical streetcar axles. Compare one motor’s output power and mass to calculate specific power, specific mass, watts and horsepower.
Arc Light and Regulating Gear: Carbon Feed Animation and Calculator
Explore carbon-electrode burnback and regulating feed. Calculate combined closing travel, no-feed gap and step excess from consumption rates and cycle timing.
Ampere Meter Mechanism Explained: How Ammeters Work, Shunt and CT Diagram, Parts and Uses
Explore a four-terminal shunt ammeter. Compare ideal ADC counts, current resolution and saturation while distinguishing those values from real accuracy and ratings.
Alternating Current Transformer Mechanism: How It Works, Diagram, Parts, Turns Ratio & Uses
Explore an ideal AC transformer with separate windings. Calculate turns and voltage ratios, percentage voltage change and AC period, with clear real-device limits.
Flexible Coupling: Parallel and Angular Alignment Comparison | FIRGELLI
See the Zodel belt-laced coupling and compare measured shaft offset and angle with entered manufacturer limits. Combined-load checks require separate product data.
Z-crank Engine Mechanism: How It Works, Diagram, Parts, Uses, and Secondary Couple Formula
Explore a simplified Z-crank inertia comparison. Compare secondary force, offset couple and frequency; combustion and complete engine balance are not modeled.
Wankel Rotary Engine: Rotor Motion and Fixed-ratio Timing
Explore a three-apex rotor in a two-lobed housing. Convert shaft period to rotor speed and ideal event counts without predicting combustion or power.
Vertical Kerosene Oil Engine: Four-Stroke Animation and Power Calculator
Calculate ideal single-cylinder indicated power, efficiency-scaled brake power and shaft torque from bore, stroke, rpm and entered pressure assumptions.
Vertical Gasoline Engine: Four-Stroke Animation and Displacement Calculator
Explore four-stroke piston motion and calculate swept displacement, crankshaft rate, power-event frequency and mean piston speed from bore, stroke and rpm.
Union Gas Engine: Historical Arrangement and Ideal Power Comparison
Explore a generic cylinder mechanism alongside Union engine references. Compare indicated power with a fixed 85 percent mechanical-efficiency assumption; no historical engine rating is predicted.
Sight-feed Oiler: Drop-rate and Volume Comparison
Explore a sight-feed oiler and compare baseline and divided drop rates. Convert rates to volume per hour using an entered drop volume; lubrication demand is...
Trunk Piston and Connecting Rod: Ideal Angle and Force Comparison
Explore an in-line slider-crank and compare rod inclination with a static entered-force decomposition. The capped-angle calculation does not predict dynamic engine loads.
Swashplate Engine: How It Works, Parts, Stroke Formula, Uses and Worked Example Explained
Explore an axial swashplate drive with fixed cylinders and a rotating inclined plate. Compare ideal piston stroke at two plate angles.
Gas-Motor Passenger Car: Ideal Drivetrain Calculator | FIRGELLI
Follow an illustrative gear-and-chain drive and compare engine torque, axle torque, rim pull and ideal wheel speed from horsepower, rpm and geometry.
Alpha Stirling Engine: Animation and Carnot Calculator | FIRGELLI
Explore two phased power pistons in separate hot and cold cylinders. Compare absolute temperatures, the Carnot efficiency ceiling and crank-phase deviation.
Steel Ball Adjustment Mechanism: How Check Valve Lift, Seating Force, and Seat Geometry Work
Steel ball adjustment sets check-valve lift and seating force in fuel pumps and oilers on vintage gas engines. Learn the geometry, the math, and how...
Stalk Puller Mechanism Explained: How Counter-Rotating Rolls, PTO Drive, and Pull Force Work
Stalk Puller mechanism explained — how counter-rotating rolls grip and pull cotton, corn, and sunflower stalks for clean field clearing and tillage prep.
Stake Puller Mechanism: How a Gas-Engine Hydraulic Post Puller Works, Parts, and Uses
How a gas-engine Stake Puller works, the lifting force formula, real fencing-contractor examples, and how to size one for steel T-posts and survey stakes.
Solid Strap End Mechanism Explained: Connecting Rod Big-End Design, Bearing Clearance, and Uses
Solid strap end connecting rods explained — how the one-piece big end works, why marine and stationary engine builders pick them, and how to size...