Recent Blogs
Twin-screw Vertical Engines: Ideal Indicated-power Calculator
Explore two schematic vertical cylinder units and calculate ideal indicated power from mean effective pressure, bore, stroke and speed. Shaft and propeller output are not...
Trunk Engine: Piston Areas and Ideal Indicated Power
Explore a hollow-trunk marine engine and compare its two working piston areas. Calculate ideal indicated power from entered mean effective pressure and mean piston speed.
Brotherhood Three-cylinder Engine: Radial Arrangement
Explore Hiscox’s Brotherhood-type radial steam-engine arrangement and compare displayed angular sectors. The calculator does not predict valve events or power.
Thornycroft Boiler: Historical Form and Energy Balance
Explore a historical water-tube boiler arrangement and a generic entered fuel-to-steam energy balance. Results are not a boiler rating or operating guidance.
Submerged Head Vertical Boiler Mechanism: How It Works, Parts, Diagram and Uses Explained
See the submerged-head vertical boiler, its circulation diaphragm and clear centre. Explore flow area and mean water speed with a simplified calculator.
Stocker Rotary Engine: Sector-Piston Animation and Volume Calculator
Explore Stocker’s two sector pistons and external sliding-block coupling. Calculate chamber volume and compare pressure-work for an illustrative geometry.
Sterling Boiler Mechanism: How a Bent-Tube Stirling Water-Tube Boiler Works, Parts and Diagram
Stirling boiler explained — how the bent-tube water-tube design works, why power stations adopted it, sizing formulas, and real heritage and industrial applications.
Steam Trap with Valve Mechanism Explained: How It Works, Parts, Diagram, Sizing Formula and Uses
How a steam trap with isolation valve protects condensate lines in heritage steam plants. Sizing, failure modes, and a worked drip-leg example.
Steam Trap Mechanism Explained: How It Works, Parts, Diagram and Sizing Formula
How a steam trap works, sized with real numbers for heritage steam mains, process plant and tracing lines. Diagrams, formula, worked example and FAQ.
Steam Soot Sucker Mechanism Explained: How Steam-Jet Ejectors Clean Boiler Tubes
Steam Soot Sucker explained — how steam-jet ejectors strip soot from boiler tubes, sizing the entrainment ratio, and worked examples from heritage marine practice.
Steam Separator Mechanism Explained: How It Works, Parts, Diagram and Uses in Steam Engines
Steam separator design, sizing, and droplet-removal physics for marine, brewery, and heritage steam plants — with a worked dryness-fraction example.
Steam Engine Valve Chest Mechanism Explained: D-Valve Parts, Lap, Lead and Port Opening Diagram
Steam engine valve chest explained — how the slide valve admits and exhausts steam, port sizing, lap and lead, and worked examples from heritage marine...
Steam Engine Guides (form 4): How Four-Bar Crosshead Guides Work, Parts & Slipper Pressure
Steam engine guides (form 4) keep the crosshead aligned and absorb piston-rod side thrust. Learn the geometry, loading limits, and heritage engineering use.
Steam Engine Guides (form 3): How the Four-Bar Alligator Crosshead Works, Parts & Diagram
Steam engine guides (form 3) keep the crosshead aligned and absorb connecting-rod side thrust. Learn the geometry, loads, and sizing for heritage engine restorations.
Steam Engine Guides (form 2): How Form-2 Bar Guides Work, Parts, Side Thrust & PV Loading
Steam engine crosshead guides keep the piston rod dead straight under thrust. Learn slipper geometry, rubbing speeds and clearance limits for heritage engines.
Steam Engine Guides (form 1): Crosshead Mechanism, Slipper Diagram, Side-Thrust Formula Explained
Steam engine guides keep the crosshead aligned with the cylinder bore. Learn how slipper, bar and 4-bar guides work, with sizing math and worked examples.
Steam Engine (form) Explained: Mechanism, Cylinder Layouts, Slider-Crank Diagram & Parts
Steam engine form explained — cylinder, piston, valve gear and crank arrangements that define every layout from Watt beam engines to Stuart Turner mill engines.
Starting Lever Mechanism: How It Works, Parts, Diagram and Uses in Steam Engines
Starting lever explained — how steam engine drivers admit live steam to a cold cylinder, control the first stroke, and bring locomotives and mill engines...
Standard Injector Mechanism Explained: How It Works, Parts, Diagram & Calculator
Standard injector explained — how a steam-driven feedwater injector works, sizing formula, worked example for heritage boilers, and troubleshooting failures.
Spring Steam Trap Mechanism: How It Works, Parts, Diagram and Sizing Calculator
How a Spring Steam Trap works in heritage steam plant — balanced-pressure thermostatic operation, sizing formula, worked example, and failure diagnostics.
Slotted Cross-head Mechanism: How It Works, Parts, Formula, and Uses in Steam Engines
Explore a crank pin and sliding bearing box in a slotted cross-head. Calculate selected-angle velocity, peak speed, stroke and transverse pin offset.
Single Eccentric Variable Valve Throw Mechanism: How It Works, Parts, and Diagram
Single Eccentric Variable Valve Throw explained — how shifting one eccentric on a steam engine alters valve travel, cutoff, and power across operating range.
Single Eccentric Valve Gear Mechanism: How It Works, Diagram, Parts, Timing & Uses Explained
Single Eccentric Valve Gear explained — how it drives the slide valve on stationary steam engines, with formulas, worked example, and design tradeoffs.
Single D Slide Valve Mechanism: How It Works, Parts, Lap and Lead Diagram
See how a D-slide valve alternates admission and exhaust through three passages. Compare selected eccentric radius, throw and opening-span dimensions.
Simple Unhooking Device: Eccentric-Rod Hook Animation and Timing Calculator
See a bell crank lift an eccentric-rod hook off a rockshaft wrist pin. Use the separate calculator for constant-speed angle and time conversions.