Recent Blogs
Steam Engine Governor (centrifugal W/ Inclined Planes)
How a centrifugal steam engine governor with inclined planes regulates engine speed — physics, formulas, worked example, and real mill applications.
Crossed-arm Steam Engine Governor
Crossed-arm steam engine governor explained — how the geometry stabilises speed, when to use it on mill engines, and the formula to size one correctly.
Silver's Marine Governor
Silver's Marine Governor controls steam engine speed against varying propeller load at sea. Learn how this 1860s flyball governor works, with formulas and a worked...
Throttle Valve
How a Throttle Valve regulates fluid flow in engines, hydraulics, and HVAC — working principle, sizing formula, worked example, and failure modes from FIRGELLI.
Wing Throttle Valve
Wing throttle valve explained — how the paddle disc controls steam flow on traction engines and locomotives, with formulas, sizing examples and design tradeoffs.
Starting Lever
Starting lever explained — how steam engine drivers admit live steam to a cold cylinder, control the first stroke, and bring locomotives and mill engines...
Inverted Governor
Inverted governor explained — how the upside-down flyball mechanism regulates steam engine speed, with formulas, real heritage engine examples, and design tradeoffs.
Direct-acting Centrifugal Governor
Direct-acting centrifugal governor explained — how flyball weights regulate steam engine speed, with formulas, a worked example, and real heritage applications.