Engine Library / Wobbler Engine #1
Single Cylinder
Wobbler.
A simple steam engine with a cylinder that rocks as the crank turns.
See how the piston, crank and flywheel work together in Wolfgang Engineering’s interactive Windows model.
The mechanism
What is a Wobbler Engine?
A wobbler is an oscillating-cylinder steam engine. Its cylinder pivots so the piston rod can follow the crank. In simple face-ported models, that rocking motion also aligns the steam inlet and exhaust passages.
The purpose
Why Was It Developed?
The moving cylinder reduces connecting linkage and helps a steam engine fit into limited space. Oscillating engines were especially useful where room was tight, including aboard ships.
Origins and use
Brief History
William Murdoch explored an oscillating engine in the 1780s. Practical designs developed through the nineteenth century, including marine applications.
Where Is It Used Today?
Today, oscillating engines are familiar in steam demonstrations, model engineering, model boats and education. Preserved full-size examples remain part of industrial heritage.
Wolfgang Engineering Model
Explore Wobbler Engine #1.
Wobbler Engine #1 v1.0 brings the mechanism to a transparent Windows desktop display. Set the speed from 0–100 RPM, stop or resume motion, separate the parts, and inspect the model from different angles.