Mth union pacific,new york city subway information,o scale train track size - Step 2

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This site requires JavaScript to function properly.Please enable JavaScript in your web browser. The first Challengers were conceived in 1936 to replace the Union Pacific's fleet of three-cylinder 4-12-2s (shown elsewhere in this catalog). Under the hood beats a third-generation model 710 diesel with 4300 horsepower; only slight modifications were needed to make the existing model 710 meet new emission standards. Other than the prime mover, however, virtually every element of the SD70ACe has been re-thought to create a 21st century locomotive. The SD70ACe also offers, in EMD's words, "outstanding improvements in maintainability." All electrical wires are on the right side of the locomotive and all piping is on the left, with most pipes and wires routed under the frame so they can be serviced by a man standing outside the engine - rather than crawling around at the bottom of the engine room. After a year of testing on the road and at the Association of American Railroads' test track in Pueblo, CO, the first SD70ACe's ('e" stands for "enhanced") were delivered to CSX Transportation in 2004. I purchased this piece mainly to be utilized on my Railroads Intermodal service because of it's size and weight I know it's going to be extremely good in pulling long freight. Just months before Pearl Harbor, the American Locomotive Company delivered the first Big Boy to the Union Pacific Railroad. Writer Henry Comstock beautifully described the Big Boy's place at the apex of steam engine history: "A Union Pacific 'Big Boy' was 604 tons and 19,000 cubic feet of steel and coal and water, poised upon 36 wheels spaced no wider apart than those of an automobile.
With a 50 mph top speed, the 4-12-2s had been the road's primary fast freight engines when built in 1926. While designed to meet the Environmental Protection Agency's Tier-2 emissions requirements that took effect on January 1, 2005, this replacement for the SD70MAC also has a higher purpose: to recapture the lead in North American locomotive sales that EMD lost to General Electric in 1987.
With 5000 such motors in service worldwide and a reputation for dependability, EMD reasoned that shop crews would prefer familiar technology.

And the time between service intervals has been doubled, from every three months to every six months. The UP's Department of Research and Mechanical Standards had designed the locomotive for a specific task: to pull a 3600-ton train unassisted over the Wasatch Mountains in Utah. That it could thunder safely over undulating and curved track at speeds in excess of 70 miles an hour was due in large measure to the efforts of two long-forgotten pioneers. The engine's angular nose offers the crew far better visibility than most other locomotives, and the cab is comfortable for engineers of almost any size. At the present time, mainline American railroads generally maintain dual fleets of locomotives.
While the Big Boy is often cited as the biggest steam locomotive ever built, in fact it is not. So American Locomotive Works (ALCO) was commissioned to build what became one of the most successful fleets of articulated engines on any railroad. Digital screens provide a range of information on what is happening both inside the locomotive and out on the road.
AC power is used for heavy coal hauling and hotshot intermodal traffic because AC traction motors offer higher starting tractive effort with the same horsepower.
The Norfolk and Western's Y6 and A, the Duluth Missabe and Iron Range's Yellowstones, and the Chesapeake and Ohio's Alleghenys were all in the same league, and some exceeded the Big Boy's weight and power. The cab easily accommodates a crew of three - an important factor in a modern world without cabooses. The pressure of wartime traffic brought an order for 65 more of these 70 mph greyhounds in 1942-44, with improvements based on lessons learned from the UP's 4-8-8-4 Big Boys.
But with the SD70ACe, Electro-Motive hopes it may have the 21st Century successor to its 1949 Geep - a locomotive that can be nearly all things to all railroads. In service, the Challengers often complemented the Big Boys, speeding traffic over less rugged territory and handing it over to the Big Boys for the passage over Utah's Wasatch Mountains.The Challengers were steam power at its zenith.

Perhaps it was the name, simple and direct, scrawled on a locomotive under construction by an Alco shop worker. They incorporated all the technology that represented super-power steam, including roller bearings on all axles and drive rods - but none of the foolishness that characterized some of the desperate efforts to save steam in the post-war years.
Maybe it was timing, as the Big Boys hit the road just when America needed symbols to rally around.
While most Challengers hauled freight, a number were assigned to passenger service in the Pacific Northwest, where they were converted to oil burners, equipped with smoke lifters ("wind wings" in UP parlance), and painted two-tone gray in 1946.It was in a roundabout way that six Challengers ordered by the UP ended up hauling coal for the Clinchfield Railroad.
Maybe the UP's publicity department just did a better job of telling the world what great equipment they had.
In the midst of World War II, the War Production Board refused the Rio Grande's request to order new articulateds of its own design and instead diverted the last six Challengers in UP's order to the D&RGW - which turned up its nose at the locos and decided to lease them for the duration and return them after the war. Whatever the reason, the Big Boy captured the imagination of railfans and the American public over the ensuing years, perhaps more than any other steam engine.
In 1947, the War Assets Administration sold the orphan locos to the Atlantic Coast Line and Louisville & Nashville Railroads, which put the Challengers to work on their jointly-owned subsidiary, the Clinchfield, Carolina & Ohio. In many ways it is the symbolic locomotive of the American West, as big and powerful as the country it sped through. Thus six engines intended to speed over western deserts and mountains ended up thundering through Appalachia.

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Category: o gauge train track | 05.12.2015

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