This wheel arrangement was proposed by Lima Locomotive Works in 1949 as a continuation of their "Super Power" concept, essentially an expansion of the 4-8-4. A larger firebox similar to the ones on the 2-6-6-6 locomotives built by Lima would have been fitted, allowing for greater power at speed. Despite promotion by Lima, there is no firm evidence that an example of this type was ever built and no nickname was ever assigned to the arrangement. In 1949, few railroads were interested in new steam locomotives due to steady improvements in diesel-electric locomotives.
It is possible that CB&Q 4-8-4 5601 was experimentally equipped with a six-wheel trailing truck to allow use on branch lines with lighter rail, but the experiment was unsuccessful. Photographic evidence is said to have existed in the 1950s, but no photos are known to exist at present.
Despite there being no documented full size examples built, there have been some 4-8-6s built for model railroads.
Reference:
Bill Withuhn, "Did we scrap steam too soon?", in Trains, Vol. 34, No. 8, June 1974, pp. 36–47.
This steam locomotive-related article is a stub. You can help Wikipedia by expanding it.
this, article, about, locomotive, wheel, arrangement, other, uses, number, under, whyte, notation, classification, steam, locomotives, locomotive, would, have, four, leading, wheels, eight, coupled, driving, wheels, trailing, wheels, other, equivalent, classif. This article is about a locomotive wheel arrangement For other uses see 486 number Under the Whyte notation for the classification of steam locomotives a 4 8 6 locomotive would have had four leading wheels eight coupled driving wheels and six trailing wheels Other equivalent classifications are UIC classification 2D3 also known as German classification and Italian classification French classification 243 Turkish classification 49 Swiss classification 4 9This wheel arrangement was proposed by Lima Locomotive Works in 1949 as a continuation of their Super Power concept essentially an expansion of the 4 8 4 A larger firebox similar to the ones on the 2 6 6 6 locomotives built by Lima would have been fitted allowing for greater power at speed Despite promotion by Lima there is no firm evidence that an example of this type was ever built and no nickname was ever assigned to the arrangement In 1949 few railroads were interested in new steam locomotives due to steady improvements in diesel electric locomotives It is possible that CB amp Q 4 8 4 5601 was experimentally equipped with a six wheel trailing truck to allow use on branch lines with lighter rail but the experiment was unsuccessful Photographic evidence is said to have existed in the 1950s but no photos are known to exist at present Despite there being no documented full size examples built there have been some 4 8 6s built for model railroads Reference Bill Withuhn Did we scrap steam too soon in Trains Vol 34 No 8 June 1974 pp 36 47 This steam locomotive related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title 4 8 6 amp oldid 1050857421, wikipedia, wiki, book, books, library,
