Plans for Steam Engines

These are plans for steam engines of all sorts of configurations, some practical for putting to work, others, just tabletop demonstrators.

Image Description File
3 Sisters Engine: A tabletop demonstrator three cylinder radial steam engine easily built of aluminum and brass. Minimal machining. 10 Pgs
260 kB
1932 Beam Engine: A small model of the original horizontal beam engine from a magazine published in 1932. The plans also include the boiler. 2 Pgs
1.3 MB
45 Degree EZee Engine: A very simple plan for a small 45 degree single cylinder steam engine worked up by a professor for his students to build as an educational project. 2 Pgs
1.5 MB
Bett Oscillating Engine: A small oscillating engine designed by Bett as a simple demonstrator. 2 Pgs
217 kB
Compound Condensing Engine: A complex but efficient design from 1902 capable of being built by an advanced amateur. 16 Pgs
1.3 MB
Danpf Engine: A good sized vertical engine. The plans are in German but can be easily understood for those not allergic to metric dimensioning. 10 Pgs
416 kB
David Engine: A small demonstrator designed by Alan Marconett of Hobbit Engineering. Well detailed plans for the first time builder. 6 Pgs
281 kB
Elbow Engine: An unusual demonstrator engine that takes some skills to build but the results should be stunning. 5 Pgs
281 kB
Elmer Verberg's 4-Square Engine: Elmer Verberg was a prolific steam engine designer & builder. When he passed he wanted his plans to be public domain. Here's his 4 square - 4 cylinder model engine. 3 Pgs
493 kB
Elmer Verberg's Baldy Engine: Elmer's Baldy is a horizontal engine using a ball for a piston. This eliminates one joint in the connecting rod for a very robust design. 2 Pgs
310 kB
Elmer Verberg's Beam Engine: Elmer's Beam is a typical old fashioned beam style engine - the iconic steam engine, easy to build and impressive when running. 4 Pgs
433 kB
Elmer Verberg's Geared Engine: Elmer's Geared engine is an unusual design but once in use in the factories of the industrial revolution. An efficient design, though complex to build. 7 Pgs
1.2 MB
Elmer Verberg's Horizontal Engine: Elmer's horizontal engine is a simple double-acting engine of the type comminly used in mills for grinding grain a hundred years or more ago. 4 Pgs
363 kB
Elmer Verberg's H-Twin Engine: Elmer's horizontal twin cylinder is mostly made of brass so is easy to machine and looks great. 2 Pgs
285 kB
Elmer Verberg's Open Twin Engine: Elmer's open column twin cylinder engine is a variant of a poppet valve engine originally designed in 1913. 7 Pgs
956 kB
Elmer Verberg's Radial Engine: Elmer's radial is a simplified, 3-cylinder radial steam egine with a very easy to make disc valve. 5 Pgs
512 kB
Elmer Verberg's Reverser: Elmer's open column reversing engine utilizes a simple shear seal valve to reverse the engine rotation without clutches and gearing. 3 Pgs
956 kB
Elmer Verberg's Scotty: Elmer's Scotty engine incorporates a Scotch Yoke mechanism for transferring linear motion to rotary instead of a traditional crankshaft. 2 Pgs
301 kB
Elmer Verberg's Slider: Elmer's Slider engine employs a slide valve, of the type traditionally used on steam locomotives. 3 Pgs
403 kB
Elmer Verberg's Vertical Wobbler: Elmer's vertical wobbler engine is a two cylinder inverted "wobbler" style where the motion of the cylinders automatically operates the valves. 2 Pgs
818 kB
Elmer Verberg's Wobble Plate: Elmer's wobble plate engine uses a stationary cylinder with a wobbline valve plate. Very clean design. 5 Pgs
589 kB
Elmer Verberg's Wood Beam Engine: Elmer's wood beam engine is a nod to James Watt's original steam engine design. 8 Pgs
901 kB
E-Zee Engine: This e-zee engine is an ultra simple design built with bent wire and a simple drilled aluminum plate. 2 Pgs
270 kB
Hilde Engine: The Hilde engine is another simple design using a bent wire crankshaft, slide valve, and mostly brass construction. The plans are in German but the instructions in English. 13 Pgs
467 kB
Horizontal Slide Engine: This Horizontal Slide engine design is a traditional mill, locomotive, side wheeler steamer type engine. 19 Pgs
405 kB
Husky 2000 Engine: A teaching design of a demonstrator, easily built that uses a cam operator. 6 Pgs
516 kB
Jepson Engine: The Jepson is a 3/4" Bore, open framed, vertical, slide valve engine from 1947 with pretty well detailed components. 3 Pgs
113 kB
Jingle Bell Engine: The Jingle Bell is a mostly aluminum demonstrator using a wobble plate valve design. 3 Pgs
455 kB
Kouhoupt Engine: The Kouhoupt engine is a model walking beam engine that appeared in a magazine designed by a fellow named Rudy Kouhoupt. It's intended for the home modeler and doesn't require any castings. 5 Pgs
1.1 MB
L-Frame Oscillating Engine: The L-Frame Oscillator is a modern, simple demonstrator design that should be easily able to be put together by the home hobbyist. 2 Pgs
209 kB
Model Boilers: A pretty good treatise on how to build model steam engine boilers for the home builder. 20 Pgs
551 kB
Model Steam Turbine: This Model Steam Turbine is an interesting demonstrator and should be fun to watch, but it couldn't be used to do any work. 12 Pgs
299 kB
Muncaster Steam Engines: This is a 1950s look at some 1900s designs by H. Muncaster. There are detailed plans to build 9 engines of different types and complexities in this series of articles. 29 Pgs
965 kB
Michael Niggel Boiler: A small steam engine boiler designed my Michael Niggel. The metric plans are in French but easy enough to follow. 29 Pgs
965 kB
Michael Niggel Vertical: A vertical single cylinder engine. Very well detailed metric plans in French. 16 Pgs
229 kB
Michael Niggel Twin: A vertical two cylinder engine. Very well detailed metric plans in French. 12 Pgs
220 kB
Pirker 4-Cylinder Engine: An interesting modern 4 cylinder wobbler valve steam engine design. The description is in German and the plans in Metric. 17 Pgs
505 kB
River Queen Engine: A nicely designed marine type model engine from the 1950s. 17 Pgs
505 kB
Rotary Twin Engine: An easily machined twin cylinder steam engine with a rotary valve. 5 Pgs
4.4 MB
Simple Engine: A simple vertical rotary valve engine from the 1930s, though castings are called for, but you could substitute CNC machined billet parts fairly easily. Plans include a boiler. 5 Pgs
993 kB
Small Horizontal Engine: A small horizontal engine from a very old set of plans. 5 Pgs
607 kB
Small Oscillator Engine: A demonstrator using the oscillating (Wobbler) principle. 4 Pgs
340 kB
Small Vertical Engine: A small vertical steam engine based on a very old design. This requires castings. 16 Pgs
11.6 MB
Soumard Twin Engine: A very well designed two cylinder vertical engine with slide valves. The plans are in French and are Metric. 10 Pgs
776 kB
German V Twin Engine: A beautiful V-Twin steam engine from a German designer. The plans are Metric and in German. Steam Harley anyone? 42 Pgs
1.2 MB