Recent Blogs
Smith Rotary Engine Mechanism: How It Works, Parts, Port Timing & Indicated Power Explained
How the Smith rotary steam engine works — eccentric rotor, abutment vane, port timing, and worked indicated-power example for heritage demonstration steaming.
Ruth's Rotary Engine Explained: How the Single-Vane Rotary Steam Mechanism Works
Ruth's Rotary Engine explained — abutment geometry, vane sealing, indicated power formula, and a worked steaming example from a heritage textile mill drive.
Rotary Engine (form 2) Explained: How the Eccentric Vane Steam Mechanism Works, Parts and Uses
How a Form 2 rotary steam engine works — eccentric drum, sliding abutment, multi-vane sealing. Real numbers, worked example, and heritage steam applications.
Bartrum and Powell Rotary Engine Mechanism: How It Works, Diagram, Parts and Uses Explained
How the Bartrum and Powell rotary steam engine works — abutment vane geometry, sealing limits, indicated power formula, and a worked rebuild example.
Lamb Rotary Engine Mechanism: How the Oscillating-Cylinder Steam Engine Works, Diagram & Parts
How the Lamb Rotary Engine works — a single-cylinder steam engine that converts piston motion to rotary output through an oscillating cylinder. Specs, formula, and...
Stocker Rotary Engine Mechanism: How It Works, Parts, Diagram and Uses Explained
Stocker Rotary Engine explained — how the rotating-piston steam engine works, its kinematics, real heritage applications, and a worked sizing example.
Roller Piston Rotary Engine: How It Works, Diagram, Parts, Formula, and Uses Explained
How a Roller Piston Rotary Engine works — internal geometry, sealing, torque output, and real steam-power applications from marine launches to mill drives.
Ritter Rotary Engine Mechanism Explained: How It Works, Parts, Diagram, Formula and Uses
How the Ritter Rotary Engine works — a 19th-century rotary steam engine using sliding abutments and a drum piston. Theory, formula, worked example, and restoration...
Napuer Rotary Engine Mechanism: How It Works, Diagram, Parts, Formula and Uses Explained
How the Napier Rotary Engine works, its design history, worked example calculating power output, plus tradeoffs vs reciprocating steam engines for marine use.
Knickerbocker Four Piston Rotary Engine Mechanism: How It Works, Parts, and Uses Explained
How the Knickerbocker four piston rotary steam engine works — geometry, indicated horsepower formula, worked example, and troubleshooting for heritage restorers.
Holly Rotary Engine Mechanism: How It Works, Diagram, Parts, Uses, and Indicated Horsepower
Holly Rotary Engine explained — how the eccentric piston and abutment work, real heritage examples, formulas, and a worked horsepower calculation for restorers.
Franchot Rotary Engine: Mechanism, Diagram, Parts, and Indicated Horsepower Explained
Franchot rotary engine explained — how the double-acting rotating cylinder converts steam into shaft power, with worked example for a heritage marine plant.
Forrester Rotary Engine Mechanism Explained: How It Works, Diagram, Parts, Formula & Uses
Forrester rotary engine explained — abutment geometry, sealing tolerances, and worked sizing for heritage steam restorations in mills and pumping stations.
Double Slide Piston Rotary Engine: How It Works, Slide Valve Timing, Parts & Indicated Power
How the Double Slide Piston Rotary Engine works — geometry, port timing, and a worked example from a heritage workshop restoration. Diagrams, formulas, FAQs.
Davies' Disc Engine Mechanism Explained: How the Wobble Disc Rotary Steam Engine Works
Davies' Disc Engine explained — a rotary steam engine using a wobbling disc instead of pistons. How it works, formulas, applications in marine and pumping...
Cochrane Rotary Engine Mechanism: How It Works, Parts, Diagram, and Uses Explained
How the Cochrane Rotary Engine works — vane geometry, port timing, sealing tolerances, and a worked sizing example for heritage steam plant restoration.
Boardman Rotary Engine Mechanism: How It Works, Diagram, Parts, Uses & Interactive Calculator
Learn how the Boardman rotary engine converts steam pressure into shaft torque using a sliding-vane disc. Sizing, tradeoffs, and real marine applications.
Berrenburg Rotary Engine Mechanism: How It Works, Parts, Diagram, and Uses Explained
Berrenburg Rotary Engine explained — how the rotating piston block delivers torque, why it replaced reciprocating engines in some marine and pump applications.
Disk Engine Mechanism: How the Almond Nutating Disk Steam Engine Works, Parts & Uses
Disk Engine explained — how the wobbling disk converts steam pressure to rotary motion, used in pumps, marine auxiliaries, and small power units.