The Big Boys were designed for Union Pacific's steep mountain grades between Ogden, UT and Green River, WY. In modern days, when more horsepower is needed, more locomotives are put on the train and cables are connected between them so that one train crew can control all the locomotives from the lead locomotive. In areas where helper engines are needed, these are put on the back of the train and usually have their own crew. Steam engines, by nature, can't do that. Every engine on a train has to have its own crew. That is why, in steam days, you rarely saw doubleheaded trains. Both engines had to have their own crew, and had to rely on whistle signals to let each other know what they were doing. This was inconvenient, and Union Pacific didn't like doing it on their line between Green River and Ogden.
Thus the Big Boy was born. UP wanted a locomotive that could pull a train on that line without help. They had a 4-8-8-4 wheel arrangement, meaning they had two sets of eight driving wheels each. They burned coal, but the 4005 was later converted to burn oil, but the conversion was poorly designed and did not work properly. The design has been improved since then, and like the other two engines in UP's steam program, the 4014 will be converted to burn oil. They were built by American Locomotive Company, the first twenty (4000-4019) were built in 1941 and five more (4020-4024) were built in 1944. They earned their nickname when a worker at the ALCo plant in Schenectady, NY wrote "Big Boy" on the front of one of the engines as it was under construction. The nickname stuck, and today that is what everyone knows this design by. The locomotives were not in service long, as diesels began taking over shortly after they were built, and the last one ran July 21, 1959.
Below are some of the photos I shot in Ogden, for a full album visit our facebook page.
For the rest of the photos, please visit the photo album on our facebook page. If you have not "liked" our page, search for "Ogden Brothers Trains" on facebook and you will find it.
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