Portal:Trains/Featured article/Week 6, 2006

The "Beep" (also referred to as the SWBLW) is a one-of-a-kind switcher locomotive built in 1970 by the Atchison, Topeka and Santa Fe Railway at its Cleburne, Texas, workshops. Technically a rebuild, the Beep (a portmanteau of "Baldwin Geep," whose official designation was derived from "SWitcher, Baldwin Locomotive Works") originally entered service on the Santa Fe as a Baldwin Model VO-1000. Following close on the heels of its highly-successful CF7 capital rebuilding program, the railroad hoped to determine whether or not remanufacturing its aging, non-EMD end cab switchers by fitting them with new EMD prime movers was an economically viable proposition. In the end, the conversion procedure proved too costly and only the one unit was modified, though it remains in active service as of 2006.

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