A demonstration of pipe bending on this machine convinced me of its superiority to the hand held benders.

From about 1860 this form of reciprocating engine became standard practice for passenger and cargo vessels in the merchant service. Then the grubscew is tightened. Sea-water entered the circulating pumps through two pipes in the engine bed-plate, passed through the condenser tubes and was discharged overboard through a lagged pipe. Minotaur, was also equipped with trunk engines.

These engines are illustrated in the previous chapter.

The steam and exhaust pipes of the engines were of copper and had special expansion joints to give flexibility under changes in temperature - an important consideration. As you can see it has a  heavy duty frame,  shoulder bolts holding the rolls with machined slots for various sized pipe, and a 19mm hex connector for the driving battery drill. give the required clearance between hull and screws.

UFO’s, crop circles, megalith structures, evidence of buildings on the moon and on Mars. I will count the bits at some stage. The book “Marine Steam Engines and Turbines” has been been very useful.

Displacement oiler top left, brass flywheel, and pipework. Why is only superheated steam used in a steam engine? Since this photo, I have also made the winch functional. At that point the port will be open by the thickness of the paper. The reciprocating engines were of the triple-expansion type with one high-pressure cylinder, one intermediate-pressure cylinder, and two low-pressure cylinders. Have not decided whether to bolt it together, or just Loctite it. at 58½ revolutions a minute, giving a speed of just over 14 knots. The big ends now with lubrication points. So the jig holds the workpiece by the first made thread, and the piece is finished by holding it in the collet chuck. Valve rods tightened. diameter, and two high-pressure cylinders with a diameter of 4 feet. I drilled and threaded some extra holes, to accept 2 rows of 3 rolls. And the low pressure end, and links for the pump. The image is from 1999. From above. and a depth to the main deck of 33 ft. 8 in. So, tomorrow I will hook my triple up to Stuart Tankard’s vertical boiler, and see what happens. A triple-expansion engine is a compound engine that expands the steam in three stages, i.e. Reader Richard suggested that I include a ruler in some of the triple photos, for a sense of scale, so here it is.

It was recommended by an expert friend who uses it on full size steam engines (thanks Tom!). It is not inconceiveable that Governments have information which they are witholding from the general populace, about aliens, UFO’s, ancient civilisations and so on. The high-pressure cylinder and the first intermediate-pressure cylinder were at the top, with the second intermediate-pressure and low-pressure cylinders.

The triple expansion engine is a popular project for model engineers with time available.

John. TRIPLE-EXPANSION ENGINES were fitted in H.M.S.

The rectangle is about 380 km from the coast. The A. Lopez had a displacement of 2,665 tons and was 270 feet long with a beam of 38 feet. Duncan by twin screws at a speed of 19 knots. The boilers were fitted with economizers to heat the feed water. The final development of the reciprocating engine did not stop at triple-expansion working. One blows into the appropriate tube while rotating the crankshaft. in. The longitudinal alignment with the cylinder bores was determined by the precise drilling in the tops of the columns, and the cylinder base covers. She had evaporators and distillers for the supply of fresh water, two steering engines, four sets of combined engines and dynamos for the generation of electricity, refrigerating machinery, four sets of air compressors and other pumps. (they are probably very nice people, I just cannot stomach the hoo-ha). in diameter, with a stroke of 4 ft. 4 in. In 1874 a Liverpool shipowner, Mr. W. H. Dixon, decided to employ three-stage expansion in his screw-steamer Propontis. (pics of that in future post). Amazingly, it all went well! I did this by using the Allen key to loosen the grubscrew, then using the Allen key to hold the eccentric fast, while rotating the crankshaft. Kempton Steam makes a great TV and film location! surmounted by two high-pressure cylinders, 4 feet in diameter. The high-pressure and first intermediate-pressure cylinders were provided with piston valves, the others with slide valves.

ft. These vessels were built and engined by Harland and Wolff in 1889 for the White Star Line. The arrangement of the pumps and their valves was of special interest. The valves were operated by Stephenson’s link motion reversing gear. ft. The bearings or gudgeons carrying the small ends of the connecting rods were housed in the pistons, and the large ends of the rods drove balanced cranks set at right angles. Remove the valve chest cover, bolt the valve chest to the cylinder block, and rotate the crankshaft by hand until the port is obviously visually open. This is the condenser side, and the Edwards pump.

Two sets of triple-expansion engines were installed in the Majestic, driving twin screws with a diameter of 19 ft. 6 in. Her overall length was 582 feet and her extreme beam was 57 ft. 10 in.

in. But there were quite a few finishing tasks put aside until later, which I am now tackling. Since my “Strange Lights over Geelong” experience I have been looking at all sorts of weird posts on YouTube. Steam at a pressure of 180 lb. I suspect that this will not be the final teardown and assembly.

The high- and intermediate-pressure steam was controlled by piston valves, and flat slides were used in the valve chests of the low-pressure cylinders. One thing I would suggest. The cylinders were steam-jacketed and all were provided with slide valves, but there were only two sets of link motion reversing gear. I suspect that one of the eccentrics slipped on the crankshaft, and threw the timing out. The modern quadruple-expansion engine is built with the cylinders in line, in a fore-and-aft position. Duncan, built in 1900. Fortunately for me Stuart still had the plans which he had drawn up, so I made my own bender.