Both models had a cab and pantograph at each end. GE designed two variants to handle these use cases: the E60CP had steam generators, while the E60CH had HEP generators. In the 1970s Amtrak operated both old-style steam-heated cars and new Amfleet cars with head-end power (HEP). Unlike freight locomotives, passenger locomotives have to supply heat to passenger cars. The starting tractive effort was considerably lower at 75,000В lbf (334В kN), with a continuous rating of 34,000В lbf (151В kN). A gearing of 68:38 permitted a maximum design speed of 120В mph (193В km/h). GE made a number of changes when it redesigned the E60C for passenger use. The locomotive is rated at 6,000В hp (4.5В MW), with a starting tractive effort of 125,000В lbf (556В kN) and a continuous tractive effort of 77,000В lbf (343В kN). Thyristor rectifiers step down the high-voltage AC to provide DC power at a much lower voltage to six GE780 traction motors, one per axle. With this gearing a maximum speed of 72В mph (116В km/h) was possible, although the standard operating speed on the BM&LP was 35В mph (56В km/h). This was necessary because of the locomotive's 85:21 gearing. GE chose a six-axle (C-C) design, with 42В in (1,067В mm) wheels instead of the standard 40В in (1,016В mm) wheels. The heavy loads of coal on BM&LP drove GE's design choices on the E60C. To operate this conveyor belt, GE Transportation Systems (GE) designed the E60C, though it was suitable for general mainline freight operation. The railroad was intended to run as a conveyor belt, with trains cycling between the coal mine and the plant. The BM&LP was electrified at 50 kV 60 Hz AC, and was the first such electrification to use this voltage in the world. It was 78 miles (125.5В km) long and isolated from the national railroad network. The Black Mesa and Lake Powell Railroad (BM&LP) was a new railroad built to transport coal from the Black Mesa Mine near Kayenta, Arizona to the Navajo Generating Station power plant at Page, Arizona. Some were sold to various mining railroads.Д«lack Mesa and Lake Powell Railroad E60C No. Most of the NdeM's electric locomotives never ran and were traded back to GE for diesels. In Mexico, the NdeM's project was delayed into the 1990s, then scrapped after three years of use. By the end of the 1970s Amtrak abandoned the E60 in favor of EMD AEM-7 locomotives manufactured by Electro-Motive Division. Problems with the truck design caused derailments above 90 miles per hour (140В km/h), rendering the locomotives unusable for high-speed service. The passenger variants failed in their intended role. They ran on the BM&LP for decades and remain in use on several mining railroads in the Western United States. The E60s were successful in the coal-hauling role. The largest customer was Ferrocarriles Nacionales de MГ©xico (NdeM), the state-owned railroad in Mexico, which bought 39 for a new electrification project in the early 1980s. That same year GE adapted the design for high-speed passenger service on Amtrak's Northeast Corridor. GE designed the locomotive for use on the Black Mesa and Lake Powell Railroad (BM&LP), a dedicated coal-hauling route in Arizona, which began operation in 1973. The E60s were produced in several variants for both freight and passenger use in the United States and Mexico. The GE E60 is a family of six-axle 6,000В hp (4.5В MW) C-C electric locomotives made by GE Transportation Systems (GE) between 19. Several in active service, three preserved, rest scrapped

Black mesa transit system