Engine Locomotive
A Historic 4-8-4 Steam Locomotive
Locomotive number 60004 rolled out of Baldwin Locomotive Works in May of 1927. She was the 13th 4-8-4 type locomotive built in America. The first twelve have all been scrapped, leaving only 3751 as the oldest 4-8-4 in existence.
Destined for the Santa Fe Railroad, she was a new design experience for both the builder and the operator. She was the first class of Santa Fe 4-8-4's. Each costing $99,712.77 as delivered.
As originally built, 3751 was an innovation in design, with its 4-wheel trailing truck to support the 108 sq/ft firebox. Included was a cast steel engine bed and separate cast cylinders, with cross-counter balanced 73 inch drive wheels. The total engine weight was 432,240 lbs. The total engine-tender weight tipped the scales at 724,600 lbs. She had a starting tractive effort of 66,000 lbs., with a maximum drawbar horsepower of 3,200 at 40 mph.
With the arrival of eleven new 3765 class 4-8-4's in 1938, Santa Fe decided to rebuild the 3751 class. The purpose was to upgrade the locomotive to equal the 3765 class if possible. This project began in October 1938 and culminated with the 3751 being completed in early 1941. Although due to larger drivers the original tractive effort of 66,000 lbs remained the same. The conversion did however allow for 90 miles per hour speeds and raised the horsepower to 3,600 at 50 mph. This major rebuilding was a success in producing a much more powerful and efficient locomotive.
In 1947 the I.C.C. ordered automatic train control to be used on locomotives exceeding 79 mph. 3751 received new equipment mounted on the right trailer truck frame which permitted her timetable a maximum speed of 90 mph.
By 1949 the "deflector" type stack was in place for use in the numerous tunnels over the Tehachapi grade.
On August 25, 1953, her fire was extinguished, but until then she had been on the point of many famous Santa Fe trains such as the Scout, the Navajo, the California Limited, the Chief, Fast Mail and Express, the Grand Canyon Limited, the El Tova, the San Diegan and standby for the Super Chief Diesel Streamliner in 1938. It is also interesting to note that while on standby for this train, 3751 had bettered the diesel locomotives performance with quicker times between Los Angeles & Barstow!, however this did not prevent being assigned to the history books - that is progress for you !
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by Ian Williamson please visit http://www.real-articles.com/Category/Transport/144
Engine Locomotive
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A 48,000 kg locomotive is traveling at 14 m/s when its engine & brakes both fail. How far will it go in meters?
The more friction, the sooner it will stop. However, the amount of friction is not specified. Air resistance can safely be ignored.