GE UM20B (A-B-B-A)

Test Beds

Somebody's Large Digital Image Here
Data from: R. Craig Photograph by : General Electric - News Bureau (March 3, 1955)
New: 15 March 2007 -

* * * A & B Units * * *

Body Type Erie Road #s UPRR Road #s Bldr Numbers Bldr Dates Notes
A-Unit 750A 620 32218 9/1954 Originally powered by 1800-hp, 12-cylinder engine. Retired in late 1963, and scrapped.
B-Unit 750B 620B 32219 9/1954 Originally powered by 1800-hp, 12-cylinder engine. Retired in late 1963, and scrapped
B-Unit 750C 621B 32221 9/1954 Originally powered by 1200-hp, 8-cylinder engine. Retired in late 1963, and used at GE plant for static testing until mid 1970's
A-Unit 750D 621 32220 9/1954 Originally powered by 1200-hp, 8-cylinder engine. Retired in late 1963, and scrapped
The four-unit "rolling laboratory" was owned by GE and tested on/leased to Erie (in Erie colors) for more than four years.

All four units were re-engined by GE with 2000-hp, 12-cylinder powerplants and sold to UPRR in October 1959.

Primary Source of information: "U-Boat" by Greg McDonnell

Additional sources: Extra 2200 South and "Alco FA: Running in the Shadows" (by RCR)


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