EMD SDP45
EMD SDP45
BN 6597, showing the extended long hood aft of the radiators for the steam generator.
|
|
|
|
|
| Performance figures |
| Maximum speed |
100–109 mph (161–175 km/h) |
| Power output |
3,600 hp (2,680 kW) |
|
|
|
| Performance figures |
| Maximum speed |
100–109 mph (161–175 km/h) |
| Power output |
3,600 hp (2,680 kW) |
The SDP45 was a six-axle, C-C, 3,600-horsepower (2,680 kW) diesel-electric locomotive built by General Motors' Electro-Motive Division of La Grange, Illinois. It was a passenger-hauling version of the SD45 on a stretched locomotive frame with an extended, squared-off long hood at the rear, aft of the radiators, giving space for a steam generator for passenger train heating. This steam generator placement followed the pattern set by the SDP35 and SDP40.
A few SDP45s remain in service, rebuilt to SD40-2 standards.
The Southern Pacific Railroad ordered their ten on May 9, 1966 with the units being placed in service between May 24 and July 26, 1967, initially on the City of San Francisco between Oakland and Ogden, and eventually used system-wide. As built, each unit carried 2,500 US gallons (9,500 l; 2,100 imp gal) of fuel and 3,000 US gallons (11,000 l; 2,500 imp gal) of steam generator water in a partitioned underframe tank. The steam generator was a Vapor Model OK-4740. SP's units had Pyle National Gyralights on the leading end, came with Nathan P-3 horns, and cost $317,156 each (SP's straight SD45's from the same period cost $290,788 each). Ordered with 62:15 gearing with the overspeed set at 72 mph (116 km/h), the gearing was changed to 60:17 (overspeed at 83 mph or 134 km/h) during 1968-1969. All except 3201 and 3207 would eventually be re-geared back to 62:15 once they entered commute service. After Amtrak took over long-distance routes in 1971, various units were leased to Amtrak for West Coast service (primarily on the Coast Starlight) until Amtrak purchased their SDP40F locomotives, while the rest were used in freight service and on Company specials. Beginning in 1973 the SDP45s were used for commuter service on the San Francisco Peninsula, replacing the Fairbanks-Morse Train Masters. SP's commuter service was demanding work and the locomotives required electrical modification to meet those demands. A "Passenger Start" switch was installed inside the cab electrical cabinet; in the "COMM" position the units were held in Parallel, in the "FRT/PASS" position normal transition was made. They stayed on the commute route (often working in freight service on weekends) until 1985 when Caltrain equipment arrived, and they were placed into freight service until their retirement, initially working out of Roseville, then in local and hauler service in the Los Angeles Basin. All were retired between 1986 (3208) and 1990 (3204) and sold for scrap.
...
Wikipedia
