Stuart Steam Engines

The founder of Stuart Models, Mr. Stuart Turner was born in 1868. He eventually, after a series of other jobs, gained employment looking after the steam generating plant at Shiplake Court near Henley-on-Thames. It was while working at Shiplake that Mr. Stuart Turner designed his now famous No.1 Model Steam Engine.

He drew up the patterns which he then sent away to be cast.On their return he machined and assembled them and soon showed the finished model at a local exhibition. He then approached Percival Marshall the editor of "Model Engineer" magazine who wrote an article about the engine. The coverage of which bought an immediate response and orders for sets of castings flooded in.
So began the business which has become one of the best known names in model engineering. He went on to produce further designs, and by 1906 there were Nine models in the range. By 1907 more space was needed so premises were rented at Market Place, Henley-On-Thames where the company remained for many years.

A decision was taken in the late 1980s to separate Stuart Turner Ltd. into two separate operations with the larger side of the business making pumps staying at Henley-On-Thames and the Steam Engine section moving to Cheddar in Somerset. In 1991 Stuart Models underwent a change of ownership with the production and sales departments moving to the Island of Guernsey off the French coast.


Movies of these engines running are at the bottom of the page.

Stuart Victoria

Length 15 1/2"

Flywheel Dia. 7"

Bore 1" ,

Stroke 2"

The Stuart Victoria follows closely the design of low pressure horizontal engines used throughout the nineteenth century, to provide power in workshops & factories in Angland and the USA.

This was purchased as machined parts from both eBay and Stuart as parts were missing from the eBay purchase. I removed all the flashing and then smoothed parts, polished, painted, varnished and assembled this engine in the Fall of 2008.

Stuart Beam

Length 13"

Flywheel Dia. 7"

Bore 1"

Stroke 2"

The Stuart Beam's use of the Watts parallel motion makes this engine fascinating to watch, particularly at slow speeds.

I Purchased, repaired and refurbished this engine, the pedastal was cracked from some one dropping the engine and there was misalignment on several pieces. I made these repairs in the summer of 2007, including adding all the piping. The wood base was built and varnished in the spring of 2008.

Stuart S 50

Length 8 1/2"

Flywheel Dia. 3"

Bore 5/8"

Stroke 1 1/4"

The Stuart S50 is an elegant model of a typical mill engine, as used in the North of England, to power small factories

I purchased this S50 on eBay and have only added the piping and varnished base. This is one of the smoothest running engines I own. It is very well machined to very close tollerances.

Stuart D10

Height 6"

Flywheel Dia. 3"

Bore 3/4"

Stroke 3/4"

The Stuart D10 is typically used in a boat as it is self starting with the crankshaft offset of 90 degrees. I purchsed this D10 on eBay and added the base and piping. I just finshed machining the reversing mechanism, it works great.

Double acting, slide valve, trunk guide crosshead.

Stuart 10H

Length 6"

Flywheel Dia.3"

Bore 3/4 "

Stroke 3/4 "

The Stuart 10H is a development from the popular 10V Engine.

A small horizontal engine which offers both power and visual interest. I added the wood display base with railing and steps in 2009.

This engine was built by Tony Quinn in England in 2007 and purchased by me in the summer of 2008


Stuart 10 V

Height 6"

Flywheel Dia. 3"

Bore 3/4"

Stroke 3/4”

The Stuart 10V is the most popular engine in the Stuart range. The attractive design, and the fact that it can be built on a 3 1/2 in. lathe, makes it an ideal project for the novice.

Double acting, slide valve, trunkguide crosshead

Purchased by me and fitted with pipe, valves and lubricator in 2008.

Stuart # 1

Height 13"

Flywheel Diameter 7"

Bore 2"

Stroke 2"

1/2 HP

The first Stuart No.1 was built by Mr. Stuart Turner over one hundred years ago. It has nice lines and runs effortlessly.

The Engine was built and machined by a machinist orginally. I purchased it on eBay and machined a new flywheel as the old one was interesting but not correct for this engine. I added the Stuart steam chest cover as there was justa plain one. I machined all new nuts and bolts from stock as it had allan head cap screws. There were no rings on the piston when I received it, so I fashioned some from automobile transmission rings. It was then polished, reworked and adjusted to get it running properly.

Stuart Oscillator

Height 2 1/2 "

Flywheel Diameter 1"

Bore 7/16"

Stroke 7/16"

A smooth running engine on very little pressure. This will run with an aquarium pump at less than 4 psi.

Stuart #9

Length 11 "

Flywheel Diameter 5"

Bore 1 1/2"

Stroke 1 1/2"

The No.9 is typical of the large powerful Steam Engines installed in factories and mills to provide power.

I received this from England in poor condition cosmetically. It was dissasembeled completely, then I removed all the rust, polished and painted. The globe valve, lubricator and cherry base were added. She runs very nicely. The governor is a nice additon and works as it should keeping the engine at a moderate speed no matter how much pressure is added.

Stuart #7A

Height 7 1/2"

Flywheel Diameter 3 1/2"

Bore 1"

Stroke 1"

This steam engine was purchased on eBay and had some odd allen screws and weird size bolts. They were removed and proper nuts and threaded rod were machined. The engine was bare metal, so it got a paint job and the brass cylinder cover were added. I also mounted the globe valve, lubricator and teak base. The 7A is a smooth running engine.

Stuart #4

Height 10"

Flywheel Diameter 5"

Bore 1 1/2"

Stroke 1 1/2"

This steam engine was purchased on eBay partially completed. Some of the machining was incorrect and most of the nults and bolts were missing. I have machined parts where necessary and still need to finish the crank and the eccentric and then it will be complete. Roy at Stuart sent along the parts I needed to finish this model and a set of plans. The engine was bare metal, so it got a paint job and the brass cylinder cover were added. I also mounted the globe valve, and made the mahogany base. The Stuart No. 4 is a nice size engine. When fitted with a second pulley this engine is capable of running at very high speeds making it especially suited to driving a dynamo or generator.

Stuart Sirius

Twin Cylinders

Height 6"

Length 5"

Flywheel Diameter 2 5/8"

Bore 1"

Stroke 1"

Designed in the 1930s for generating and pumping. The engine has a fully-enclosed cast-iron crankcase containing a steel 180 degree throw crankshaft. There are cast iron pistons and a stainless steel piston valve. Stuart says 0.4 bhp at 2800 rpm on 80 psi superheated steam. This engine was used during the war in the Alco Firefly generating set where it was run at 30 psi for radio battery charging duties. After the war it enjoyed much success in flash steam hydroplane racing.

I have removed all the surface rust and polished the brass and reblued the cylinder cover, restoring it to how it would have been originally.

This steam engine was purchased from Gary LaFleur who has had it in his family since before WWII, it belonged to his Grandfather. He contacted me from my web site to see if I wanted to add it to my collection. It is a great addition and I appreciate the chance to have a Sirius in my collection.

Stuart Score

Twin Cylinders

Height 3"

Length 6"

Flywheel Diameter 3"

Bore 3/4"

Stroke 3/4"

This is closely related to the D10 but is distinctively different as the casting for the valve guide is all one unlike the D10. Very quiet running and smooth.

I have polished the engine to remove some minor surface rust and will varnish the base with several coats. Runs perfectly and quietly.

This engine came from the UK and was presented to a man who retired from the engineering training school at the C.E.G.B. When he left, back in 1980 he was presented with this engine as gift from the company and the apprentices who had purchased and then machined them.

Stuart Real

Height 15 5/8 "

Length 6"

Flywheel Diameter 7"

Bore 1"

Stroke 2"

Often called and upside down engine, however that is not correct. The earliest steam engines were built like this with the crankshaft above the cylinder. This model is based on an engine that ran in a coal mine for nearly one hundred years in England.

When I recieved this engine there was a lot of surface corrosion and I have polished all of it to bring back its wonderful look. It will need a couple of minor adjustments too.

This engine came from the UK and was presented to a man who retired from the engineering training school at the C.E.G.B. When he left, back in 1980 he was presented with this engine as gift from the company and the apprentices who had purchased and then machined them.

Stuart Sun

Twin Cylinders

Height 4"

Length 4 3/4"

Flywheel Diameter 1 3/4"

Bore 3/4"

Stroke 3/4"

I purchased this engine on ebay from the UK and it runs exceptionally well. It is in need of a repaint which it will get at some time, soon. The brass dip stick and vent were added by me as they were just empty holes when I received it.

Designed for running on either saturated or flash steam, the engine is capable of powering a boat to 54 inches long .

Stuart Boiler Feed Pump

Height 1 3/4"

Length 5 1/2"

Bore 1/2"

Stroke 3/4"

An interesting engine, direct-coupled to a boiler feed pump. It's basically a conventional slide valve cylinder block, with the piston rod connected directly to the pump piston. The valve rod is shuttled back and forth by the Y-piece on the piston rod, reversing the direction of the piston as it goes.

This does pump water but have not hooked it to a boiler as yet. I added the steam valve to the engine portion.

These three Stuart Vertical Engines standing side by side give you a relative size comparison of each. They of course are also built with the same design.

Height of each engine minus the base

10V = 6"

7A = 7 1/2 "

4 = 10"

Sun and Sirius

I thought you might like to see these two engines side by side.

Video's of the Stuart Engines