Between September and December 1973 the South African Railways placed twenty Class 91-000 GE UM6B diesel-electric locomotives in service on its two feet narrow gauge lines, numbered in the range from 91-001 to 91-020. The GE UM6B was designed and built by General Electric in Erie, Pennsylvania and is the largest two foot gauge diesel-electric locomotive in the world. When they became redundant, several were sold and one, no. 91-010, was equipped wih Bigfoot Cape Gauge bogies from a Class 36-000 in order to be employed as shunter at Swartkops Loco Depot in Port Elizabeth. See also the Wikipedia article on the South African Class 91-000. |