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That appears to be a colourized photo of CPR 1950. It was one of a group of 5 0-6-6-0's built from 1909 to 1911 specifically for helper duty on the Rogers' Pass. As I understand it, they were not very successful in service, and were rebuilt into a more conventional rigid-frame design a number of years later.DanEveryone is entitled to their opinion no matter how wrong it is.
Thanks for the information, Dan 'Smallspy'. I was curious enough about the photo to do a bit of a Google search on the internet. Here's a link to another photo and a bit of history of CPR #1950. http://www.canadianfishing.com/crichton/vc5/297.htm according to the reference, the engine had both high-pressure and low-pressure cylinders, so I would assume it was a Mallet-style compound. It was somewhat unusual, at least as regards North American practice, in that the two sets of cylinders faced each other under the center of the locomotive. The article claims that the locomotive was one of six rebuilt in 1905 into this 0-6-6-0 wheel arrangement from 1893-vintage 4-6-4's, but I wonder if that is correct. I was not aware that CPR, or any other North American Railroad, built any 4-6-4's as early as 1893. I also found a reference that the 0-6-6-0's were unsucessful, and were rebuilt to rigid frame 2-10-0's in 1917. (the other) Dan
Dan,It seems as if most of the facts on that site are correct. I currently have on my lap a book called Canadian Pacific Railway: Motive Power, Rolling Stock, Capsule History, written by Patrick C. Dorin. While not the "last word" on the subject, Mr. Dorin wrote a pair of books on the history of Canada's two railways and both are generally regarded as well researched and for the most part accurate.Appendix A concerns itself with a listing of CP's steam motive power over the years, and provides a list of every engine built for them. It lists the 6 (typo above, my apologies) 0-6-6-0's as the only six built, and numbered 1950-1955 as built. It lists the build date as 1909-11, with no exceptions or other notes.According to the book, the 6 were rebuilt after the 1916 opening of the Connaught Tunnel, but does not give a precise date for the rebuilding. They were renumbered 5750 to 5755, and lasted until the early 1950ies.Now that I think about it, I'm pretty sure his assertion of 1950 being rebuilt from a 4-6-4 is incorrect though. CPR did roster one 4-6-4T built in 1893, however it was a purpose-built locomotive for Montréal's commuter service. Also, its boiler visually appears somewhat smaller than that used on 1950. I'm sure that I've seen photos of it in the 1920ies, but I can't seem to place them right now.DanEveryone is entitled to their opinion no matter how wrong it is.
I didn't think any RR's had 4-6-4's before the 1920's. the Chicago Milwaukee St. Paul and Pacific was the first RR to design a 4-6-4 locomotive in the 1920's, but because they were broke,they couldn't afford to build any at the time (however in the 30's they bought their F-6, F-6a, and F-7 (1939 Hiawatha) hudsons) the NYC built the first 4-6-4's, their J class and various subclasses.
Hi again, Dan 'smallspy'. I don't have a copy of the Dorin CPR motive power book, so it sounds like you have a much better resource on the topic than I do. The website did have a bit more information would could be checked, so perhaps you could answer a question. According to the website, the engine started life as "C.P.R. in 1893 with a shop No. 1194 and a road No. 624. At that time it had a 4-6-4 wheel arrangement with 19 X 22 inch cylinders and 62 inch driving wheels". Does that builders number or road number correspond to anything in the Dorin book? Maybe some other six-coupled engine, like a 4-6-2 Pacific? I would have to agree with you that a suburban service 4-6-4T is an unlikely starting point for a 0-6-6-0. I would also have to agree with SSW that the first real 4-6-4 engines were built in the 1920's.(the other) Dan
SSW,Remember that this was a 4-6-4T, and so the trailing 2 axles were in fact more under the tender rather than the cab or firebox. I wouldn't consider it a true 4-6-4 either, but rather a modified ten-wheeler (4-6-0).Hi again Dan,Dorin's book doesn't list a cylinder size, steam pressure or driver size for the 0-6-6-0's unfortunately. It lists the steam pressure and driver size of the 2-10-0's that they were built into as 200psi and 58 inches respectively. It also does list the driver size of the suburban 4-6-4T as 65 inches.Email me and I'll scan the photos for you to use as a comparison. Obviously for reasons of copyright I can't post them up on the forum.DanEveryone is entitled to their opinion no matter how wrong it is.
"(1939 Hiawatha) hudsons)"God forbid you should use the words Hudson and Milwaukee in the same context...The correct term is "Baltic"Repent, Quickly!...before the rabid Milwaukee fans read this. I can understand why the CPR rebuilt these mallets. That forward facing valve gear probably caused the same headaches as the Duplexes Pennsy and B&O tried in the 1940's.Frank MusickMoving America into the 19th Century! www.kelticsylk.com
Frank MusickMoving America into the 19th Century!
