Recent Blogs
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.
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.