Recent Blogs
Stephenson Valve Gear Explained: How It Works, Parts, Cutoff Formula and Uses in Steam Locomotives
Stephenson valve gear explained — how the link motion controls steam admission, cutoff, and reverse on locomotives, with worked sizing example and tradeoffs.
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.
Allan Straight-link Valve Gear Explained: How It Works, Parts, Diagram and Uses
Explore Allan straight-link valve gear and its opposing reversing adjustments. Compare input shares while distinguishing them from physical valve lead and steam cutoff.
Walschaerts Valve Gear: Linkage Animation and Harmonic Calculator
Explore the principal Walschaerts links and combine ideal eccentric and lead motion components. The calculation does not solve actual valve events or cutoff.