PMR Steam Engines


P.M. Research Inc. of Wellsville, NY was started in 1973 by Paul Vossler and Gary Bastian to build full size gasoline generators. In 1985 they wanted to give their children and opportunity to run the shop equipment and so they designed some model steam engines. Their first kit was the #1A of aluminium, it is now the #1BI kit. It was so popular at a local steam show that they decided to offer more steam engines, boilers and accessories. In 1993 they introduced the EL-1 engine lathe kit and now have many shop tools in their line. In 1995 they added Solar Engines to the inventory and now have added the Red Wing Motor Hit and Miss engine kits as one of their products. They have over 30 models in the line including steam boilers. A really nice company to deal with and always have the parts in stock. There pipe, valves and lubricators make your steam engine complete and ready for that steam boiler.

Even though we know them best for their engine product line, they are also well known in the aviation industry through their line of radome boots and leading edge erosion protection tapes.

Movies of these engines running can be seen at the bottom of the page.


PMR # 1 BI

Length 10"

Flywheel 7"

Bore 1"

Stroke 1 1/2"

This is a model of engines that were used in the Pennsylvania and New York oil fields during the 19th and 20th centuries. The kit comes as raw castings and needs to be machined,.

Governor from a kit by John Coleman of the "The Steam Chest"

This engine was machined by Allan in 2007 the governor was added in 2009. Runs nicely at about 12 psi. This was my second attempt and maching with no previous experience with a lathe or mill to speak of. It is very satisfying after many hours of work to see an engine you have built run on steam.

PMR # 2 AM

Bore 1/2"

Stroke 3/4"

Double Acting


This engine has a unique porting system. The head oscillates as it runs, swinging the port holes from inlet to exhaust.

This kit comes completely machined for easy assembly including all hardware, gasket material, brass bar stock and complete drawings. The pump is described on the pumps page driven by a different engine.

Allan assembled this in 2008

PMR # 3 BIM

Length 6"

Flywheel 2"

Bore 1/2"

Stroke 3/4"

This engine is similar to those used to provide line shaft power to factories and mills in the 1800's.

This bronze and iron engine kit is completely machined for easy assembly and comes with all required hardware, gasket material, brass and steel bar stock and working drawings.

Assembled by Allan in 2007

PMR # 5 BI

Height 8”,

Large Flywheel 3”

Bore 5/8"

Stroke 7/8"

This is a 1/8 scale model of an original engine manufactured by the Orr & Sembower Co. of Reading, PA.

Kit comes as raw castings and needs to be machined, using a lathe, drill press and milling machine as well as a lot of hand work.

Allan machined this engine in 2007 as his first lathe project. It runs well

PMR # 5 BI

Height 8”,

Large Flywheel 3”

Bore 5/8"

Stroke 7/8"

This is a 1/8 scale model of an original engine manufactured by the Orr & Sembower Co. of Reading, PA.

Kit comes as raw castings and needs to be machined, using a lathe, drill press and milling machine as well as a lot of hand work.

Allan machined this engine in 2009 it is all made of aluminum except for the piston and the eccentric parts on the upper part of the engine.

This was purchased off ebay unmachined.

PMR # 7 BIM

Bore 1/2"

Stroke 3/4",

With a 3 inch flywheel and twin cylinders, this engine has the unique ability to always start by just turning on the steam. The cranks are set at 90 degrees.

Kit comes completely machined with all the required hardware, gasket material, brass and steel bar stock and working drawings.

Assembled and painted by Allan in 2007, I have used it to run various accessories from the flywhell with a 1/2 inch rubberized belt.

PMR # 8 M

Bore 1/2"

Stroke 3/4"

Twin Cylinder Double Acting

This unique engine has forward, reverse and speed control capabilities, using a single lever which can be servo operated for radio control.

The engine has a cast bronze base and frames, with oilite bronze sleeve bearings on the crank shaft and piston rod. The crank pin bearings are machined from solid bronze. It also has a precision ground stainless steel piston rod with "O" ring seals. The light weight aluminum cylinders are hard anodized to give long wear.

The kit comes already machined with all the hardware and drawings.

Assembled and painted by Allan, fall of 2009. I also machined the aluminum base for mounting until it goes into a boat.

Steam Engine Videos