This particular model is still offered by Stuart Turner (stuartmodels. Com) in their latest catalogue visible on-line.Here is an excerpt of the Sirius description from the Stuart Turner catalogue. The Stuart Sirius was originally designed for racing steam hydroplanes. Particular attention was given to the valve gear and steam passage design with the result that the engine produces great power using a surprisingly low volume of steam. Our tests have shown that running at 2800 rpm the engine produces 1/3 bhp. During WW2, the British military used the Sirius engine attached to a generator along with a small multi-fuel boiler as a portable electric source for radio communications. Included with the engine is a displacement lubricator, which will require a tee and the metal flashing. I had thought of using mahogany strips instead of metal for flashing, but didn't get around to it. The engine cylinder are 1" in diameter with a 1" stroke and measures The engine measures 6.5"high, 7" long and 4 wide at the base.
It will require oil in the base, for which there is a dipstick. The item "Stuart Turner Sirius High Speed Steam Engine" is in sale since Thursday, June 14, 2018. This item is in the category "Toys & Hobbies\Models & Kits\Tools, Supplies & Engines". The seller is "yatsevitch" and is located in Stoystown, Pennsylvania. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica.