Recent Blogs
Whitworth Quick-return
Engineer's guide to the Whitworth quick-return mechanism — how it works, formulas, ratios, and real shaping-machine examples used in metalworking shops.
Crank to Oscillating Rod Reciprocating
Crank to oscillating rod reciprocating mechanism explained — how it converts rotation into back-and-forth motion, with formulas, examples, and design rules.
Crank (general)
Crank mechanism explained — how rotary input converts to linear or oscillating output, with sizing math, real-world examples from bicycles to engines, and design tradeoffs.
Eccentric Crank
Eccentric crank explained — how the offset shaft converts rotary motion into reciprocating linear motion in pumps, presses, and steam locomotive valve gear.
Haven's Planetary Crank Gear
Haven's Planetary Crank Gear converts rotary motion into a slow reciprocating stroke for pumps, presses, and railway signal gear. See diagrams, math, and examples.
Variable Crank Throw
Variable Crank Throw mechanisms let you adjust stroke length on the fly. See how the adjustable crank pin works, with formulas and real machine examples.
Scotch Yoke
Scotch Yoke mechanism explained — how it converts rotary to linear motion, real engineering formulas, applications in valve actuators, pumps and engines.
Reciprocating Motion
Reciprocating Motion explained — how back-and-forth linear motion drives pumps, engines, and compressors, with formulas, worked examples, and design tradeoffs.
Oscillating-cylinder Steam Engine
How an Oscillating-cylinder Steam Engine works — trunnion porting, valve timing, and worked example for marine launches and model engineering.