Recent Blogs
Gear Coupling: Crowned Hubs and Angle Comparison | FIRGELLI
Learn how crowned hubs accommodate limited misalignment. Compare entered angles with selected thresholds and convert crown drop from inches to thousandths.
Gate Valve: Travel and Projected Opening Calculator | FIRGELLI
Explore ideal gate-valve travel and the circular bore area uncovered by a straight gate. Calculate effective lead, travel, projected opening and turns left.
Four-Way Cock: Port Routing and Cv Comparison | FIRGELLI
Explore four-port routing and compare liquid pressure drop for two Cv values. Supply, valve ratings and complete circuit performance remain separate.
Force Pump: Piston Motion, Ideal Pressure and Flow Calculator | FIRGELLI
Explore a reciprocating force pump. Compare handle force, leverage, piston dimensions and delivery cadence without confusing discharge head with suction lift.
Foliot Mechanism Explained: Verge Escapement, Diagram, Parts, and Tick Period Formula
The foliot is the earliest mechanical clock regulator. See how horologists use its inertia and verge escapement to control timekeeping in tower clocks.
Folding Ladder: Hinge-Lock Illustration and Load Comparisons | FIRGELLI
Explore a folding-lock concept and simple equal-share comparisons. Understand why these ratios do not calculate hinge strength or establish a ladder rating.
Flywheel Energy Ratio Calculator: How Speed Changes Storage | FIRGELLI
Compare flywheel energy at two speeds. Learn why energy follows speed squared, what the ratio means, and why usable energy differs from total stored energy.
Float Switch: Level Sensing and Sump Refill Calculator | FIRGELLI
Learn how a float changes a level-switch contact. Calculate cylindrical sump differential volume and refill rates, with pump-down time clearly excluded.
Flexure Bearing: Motion and Ideal Blade-Stress Comparison | FIRGELLI
Learn how elastic bending guides limited motion. Compare constant-curvature blade stress and an entered reference without claiming fatigue life or stage accuracy.
Electric Servo: Screw-Axis Animation and Encoder Resolution Calculator
Explore a direct-coupled servo screw axis and calculate encoder counts, angular resolution and linear feedback resolution from decoding mode and screw lead.
Door Push Check: Spring and Pneumatic Damper, Travel and Volume Calculator
Explore a spring-closed door and pneumatic check. Calculate mounting-pin distances, piston travel and swept chamber volume for the stated door-pin arrangement.
Dog-power Machine: Historical Inclined Treadwheel and Churn Drive
Explore a historical inclined treadwheel, friction pulley and churn drive. Compare an ideal mechanical power estimate, no-slip shaft speeds and output torque.
Disc Tumbler Lock Mechanism Explained: How It Works, Parts, Sidebar Diagram and Key Differs
Explore normal rotating-disc lock operation: the key aligns disc gates, the sidebar retracts and the plug turns. Compare nominal code counts and ideal angular fit.
Disc Coupling Mechanism Explained: How It Works, Diagram, Parts, Formula & Uses
Explore how a flexible disc pack connects two shafts. Compare measured angular misalignment with a manufacturer-specified limit in an interactive illustration.
Moncrieff Disappearing Carriage: Historical Mechanism Illustration
Explore a schematic historical counterweighted carriage. The illustration does not specify a working artillery mount, operating procedure or structural design.
Diaphragm Valve Mechanism Explained: How It Works, Parts, Cv Sizing Formula and Animated Diagram
See how a weir-type diaphragm valve opens and seals. Calculate the Cv and Kv needed for a liquid duty, with a separate lift-position preview.
Diaphragm Coupling Mechanism: How It Works, Parts, Diagram, and Formula Explained
See a continuous diaphragm connect inner and outer rotating attachments. Compare bore and rim thicknesses and view an enlarged shaft-angle detail.
Developable Mechanism: Cylindrical Four-Link Panels, Motion and Torque Calculator
Explore four rigid curved panels that form a cylinder when stowed. Calculate ideal horizontal-load torque, coupler height and a separate axis-offset sensitivity.
Detent Mechanism Explained: How Spring-Loaded Ball Detents Work, Parts, Formula and Uses
Explore a spring-ball detent in section. Calculate finite-ball lift, ideal release force and lifting work for a V-notch under a constant spring load.
Dashpot Mechanism Explained: How It Works, Parts, Damping Formula, and Uses
Explore a linear viscous dashpot under prescribed constant-speed motion. Compare resisting force, dissipated power, energy per stroke and force divided by mass.
Crayford Focuser Mechanism: How Friction-Drive Telescope Focusers Work, Parts, and Load Formula
Explore a Crayford focuser’s smooth shaft and four support rollers. Compare ideal shaft traction with axial payload weight as the drawtube angle changes.
Crab Winch Mechanism Explained: How a Double-Reduction Hand Winch Works, Parts and Uses
Explore a double-reduction hand winch. Calculate both gear-stage ratios and drum speed, and see why hand-force advantage also depends on handle and drum radii.
Corexy Mechanism Explained: How CoreXY Kinematics, Belts, and Stationary Motors Work
Explore CoreXY belt routing with two stationary motors. Enter signed belt travel to calculate carriage X and Y displacement, path length and direction.
Constant-velocity Joint Mechanism: How It Works, Parts, Diagram and Uses Explained
Explore a six-ball CV-joint cutaway and compare its ideal constant output speed with the speed variation of a single Hooke joint at the same shaft...
Combination Lock Mechanism: How It Works, Parts, Formula and Diagram Explained
Explore a rotary combination lock’s wheel pack, pickup motion and gate alignment. Calculate nominal combinations and dial spacing under stated counting assumptions.