Mechanisms — radial valve gear

Recent Blogs

Marshall Valve Gear diagram
Marshall Valve Gear Mechanism: How It Works, Diagram, Parts, and Cutoff Control Explained
Marshall valve gear explained — how the radial linkage controls steam admission and cutoff on traction engines, with formula, worked example and design tradeoffs.
Joy's Valve Gear diagram
Joy's Valve Gear Mechanism Explained: How It Works, Parts, Diagram, Formula and Uses
Joy's Valve Gear explained — radial valve gear without eccentrics, used on LNWR locomotives and marine engines. Geometry, formula, worked example, trade-offs.
Hackworth Valve Gear diagram
Hackworth Valve Gear Mechanism: How It Works, Parts, Diagram, and Cut-Off Formula Explained
Hackworth valve gear explained — how the slotted link drives the valve in steam locomotives, with formulas, a worked cut-off example, and tradeoffs vs Stephenson.
Bremme Valve Gear diagram
Bremme Valve Gear Mechanism Explained: Parts, How It Works, Formula, and Marine Steam Engine Uses
Bremme valve gear explained — how this radial gear sets cutoff and reverse on marine and stationary steam engines, with worked example and design tradeoffs.