Recent Blogs
Caliper Brake Mechanism: How It Works, Parts, Diagram, and Brake Torque Formula Explained
Explore a fixed opposed-piston caliper and compare braking torque from friction coefficient, normal force per pad and effective friction radius.
Tongue-and-groove Pliers: Adjustable Pivot and Assumed Force Ratio
Explore selectable jaw spacing and multiply an entered handle force by an assumed ideal ratio. The result is an arithmetic comparison, not actual grip force.
Toggle Bolt: Wing Movement and Product-table Comparison
Explore a spring-wing toggle and selected rows from a cited TOGGLER table. Installation dimensions and loads apply to that product and substrate only.
Slip-joint Pliers Mechanism Explained: How the Slot-and-Pin Pivot, Lever Ratio, and Jaw Geometry Work
How Slip-joint Pliers work, the pivot geometry behind the two jaw positions, and how plumbers, electricians, and mechanics use them on real jobs.
Multiple-Bladed Sheep Shears: Sliding Plates and Slot-Limited Travel
Explore historical multiple-bladed sheep shears with sliding plates and a screw-in-slot stop. Calculate usable travel and the remaining distance to the stop.
Machine Sheep Shears: Crank, Reciprocating Cutter and Comb
Explore a reciprocating sheep-shear cutter and fixed comb. Calculate ideal frequency, stroke and accumulated travel from drive speed, cycle ratio and crank radius.
Horse Clipper: Cutter Motion and Ideal Eccentric Calculator | FIRGELLI
Compare full stroke and complete-cycle rate in an ideal eccentric cutter model. Calculate eccentric radius and peak speed, without motor sizing or animal-care predictions.
Fiddle Drill: Bow Travel and Alternating Rotation Calculator | FIRGELLI
Calculate turns per one-way bow stroke and average rotational travel from contact diameter, bow travel and stroke rate. Includes an alternating-motion animation.
Drill (general) Mechanism Explained: How It Works, Parts, RPM Formula and Uses
Convert a cutting-speed target and drill diameter into spindle RPM. Inspect a rotating twist drill and compare the target with an entered machine limit.
Cramp Drill (form 2) Mechanism Explained: How the Screw-Feed Hand Drill Works, Parts and Uses
Explore Brown’s second cramp drill, with a spindle inside a hollow feed screw. Calculate spindle speed, axial feed, feed per bit revolution and ideal feed...
Cramp Drill (form 1) Mechanism Explained: How the Screw-Feed Hand Drill Works, Parts & Uses
Explore Brown’s first cramp drill with separate drill and feed controls. Calculate screw turns, axial feed, ideal feed time and feed-handle travel.
Bolt Cutters Mechanism Explained: Compound Leverage, Diagram, Animation, Calculator and FAQ
Explore compound bolt-cutter motion and compare jaw-contact force from hand force, two entered stage ratios and assumed overall efficiency. Tool capacity is separate.
Variable Wing Sweep: Ideal Normal-Mach Projection
Compare M cos(sweep) for two entered angles. The calculator gives scalar projections only; lift, drag, shocks, wing-pivot loads and aircraft operating limits are not predicted.
Slotted Flap Mechanism Explained: How It Works, Diagram, Parts, and High-Lift Uses
See a hinged slotted flap move, explore chord and sweep references, and calculate a dimensionless factor product.
Krueger Flap: Panel Concept and Entered-State Comparison | FIRGELLI
Compare entered lift coefficients and speeds beside a conceptual Krueger-panel animation, with explicit limits on hinge geometry and aircraft performance.
Fowler Flap Mechanism: Animation and Travel Calculator
Explore how a Fowler flap extends aft and turns downward. Calculate flap chord, translation, trailing-edge extension and drop from an illustrative geometry.
Cyclic Pitch Control Linkage Mechanism Explained: How It Works, Parts, Diagram and Uses
Explore a generic three-blade cyclic pitch linkage. Adjust swashplate motion, pitch horns and link length to compare blade feathering through a rotor revolution.
Constant-speed Propeller Mechanism: How It Works, Parts, Diagram & Governor Explained
Explore a propeller governor’s response direction. Compare ideal flyweight forces, RPM error and spring-equivalent displacement without predicting blade angle.
Collective Pitch Control Linkage Mechanism: How It Works, Parts, Diagram & Formula
Collective pitch control linkage explained — how helicopter swashplate linkages change blade pitch simultaneously to control lift, climb, and descent.
Windmill Form 2: Two-stage Gear-ratio Comparison
Compare two ideal two-stage windmill gear ratios. Enter a common first-stage ratio and see the second-stage ratio needed for each output speed.
Windmill Form 1: Ideal Gear Step-up Calculator
Explore an ideal windmill gear step-up. Compare output speed, revolution time and torque ratio without assuming a wind-power or mill-capacity prediction.
Water Wheel Form 8: Flow, Head and Power Calculator
Calculate gross hydraulic power from entered flow and net head, apply an assumed efficiency and convert power to torque at a chosen speed.
Water Wheel Form 7: Retained-water Static Moment
Calculate the moment of one retained water mass at an entered radius and angle. An assumed efficiency and chosen speed give an illustrative power product.
Water Wheel Form 6: Equal-head-and-diameter Scenario
Explore gross hydraulic power in the special scenario where head equals wheel diameter. Torque is calculated at an entered speed; real wheel performance is not...
Water Wheel Form 5: Tub-Wheel Animation and Direct-Drive Power Calculator
Explore a tub wheel driving a vertical shaft and calculate ideal jet speed, hydraulic power and torque at an entered stone speed and assumed efficiency.