The New Zealand Railways Magazine, Volume 5, Issue 1 (May 1, 1930)
“Canadian Pacific” Enterprise — New Monster Locomotive to Develop 1,350lbs. Pressure
“Canadian Pacific” Enterprise
New Monster Locomotive to Develop 1,350lbs. Pressure
We have received advice from Mr. J. T. Campbell, the recently appointed representative for Wellington and the South Island of the Canadian Pacific Railway and Steamships Company, that a new locomotive, designed to give the tremendous tractive effort of 83,200 pounds and to be operated on a high steam pressure principle, will be immediately placed under construction at the Angus Shops of the Canadian Pacific Railway. This engine, the first of its kind on the American Continent, will be one of the most powerful in the world, and will be the most powerful in the British Empire.
The new engine has a tractive effort 37,900 pounds greater than what is known as the “2800 series” recently hailed as the fastest and most modern passenger engines yet produced. Canadian material will be used in the building of this new giant of the railway, with the exception only of materials that are not procurable from Canadian manufacturers. Plans for the design were recently completed for the Company by H. B. Bowen, Chief of Motive Power and Rolling Stock.
The new locomotive will have a two wheel leading track, five pairs, of driving wheels and a four wheel trailing truck. The locomotive alone will weigh approximately 466,500 pounds and the tender 297,500 pounds, making a total weight of 764,000 pounds, or 341 tons. It will operate under multiple pressure, and will burn oil—fuel. High pressure steam will be used in the center cylinder at 830 pounds pressure. This steam will be generated by heat interchange coils in the high pressure drum, the coils being part of a sealed system consisting of tubes and headers which will contain distilled water.
A pressure of approximately 1,350 pounds will be carried in the closed generating system and heat interchange coils. The forward end of the boiler will be of the conventional type and will generate steam at 250 pounds pressure per square inch.
The high pressure steam will be superheated, and after passing through the high pressure cylinder will be supplemented by superheated steam from the low pressure boiler and fed to the two low pressure cylinders; the exhaust from the outer or low pressure cylinders will be utilised in a feed—water heater in the customary way as well as furnishing the stack draft as is customary on conventional types of locomotives. The feedwater for the high pressure drum, where 850 pounds pressure steam is generated, is obtained from the forward part of the boiler carrying 200 pounds pressure. This ensures a supply of feedwater in which the scale—forming solids have been precipitated, and will obviate any difficulties being encountered with incrustation of the heat interchange coils. The low pressure boiler will be fed through the feedwater heater with a standard water pump, and the high pressure drum will be furnished with water by means of a special high pressure pump.
The locomotive will have three cylinders, the high pressure or centre cylinder being 15 1/2 inches diameter by 28 inches stroke, and the two outer or low pressure cylinders 24 inches diameter by 30 inches stroke.page break
One of the World's Most Wonderful Tourist Resorts
Easy of access from either Wellington or Auckland, Rotourua, New Zealand's thermal wonderland w[gap — reason: illegible]ts wealth of geysers, fumaroles, pools, and streams of boiling, bubbling water, lakes of turquoise blue, terraces of silica and sulphur, and mineral water baths, offers a great variety of natural wonders for [gap — reason: illegible]ourist and the health—seeker. Our illustration shew some of the many attractions of this unique thermal playground. (1) The railway station, Rotorua; (2) trout in the Fairy Spring; (3) Maori ch[gap — reason: illegible]n diving for coins at Whakarewarewa; (4) Pikau tamaiti; (5)and (6) the Sanatorium and grounds; (7) Guide Mary; (8) the Maori village of Ohinemutu; (9)and (10)pohutu[gap — reason: illegible] eyser and Cauldron; (11) a glimpse of Rotorua from the Sanatorium building.