| Power type | Diesel-electric |
|---|---|
| Builder | General Motors Electro-Motive Division |
| AAR wheel arr. | C-C |
The EMD SD40-2S (also known as the SD40-2SS or SD40SS) was an experimental test bed variant of the popular EMD SD40-2 diesel locomotive, produced by General Motors Electro-Motive Division. Electro-Motive Diesel Inc (formerly the Electro-Motive Division of General Motors Corporation is currently the world's second largest builder of Railroad The AAR wheel arrangement system is a method of classifying locomotive (or unit Wheel arrangements that was developed by the Association of American Railroads. A testbed is a platform for experimentation for large development Projects Testbeds allow for rigorous transparent and replicable testing of scientific theories The EMD SD40-2 is a model of C-C Diesel-electric locomotive built by General Motors ' Electro-Motive Division between January 1972 and February A Diesel locomotive is a type of Railroad Locomotive in which the prime mover is a Diesel engine. Electro-Motive Diesel Inc (formerly the Electro-Motive Division of General Motors Corporation is currently the world's second largest builder of Railroad [1] Nine of these locomotives were constructed, five in April and May 1978 for Burlington Northern as EMD order #776083[2] (BN 7049–7053), and four for Union Pacific in November 1980 as EMD order #80653. The Burlington Northern Railroad was a United States -based Railroad company operating between 1970 and 1996 [3] (UP 3805–3808).
These locomotives were fitted with larger engine blocks, larger turbochargers, and two-speed radiator fans which were expected to improve cooling and reliability. The four UP units, but not the five BN locomotives, were fitted with an extended long hood, about 28 inches longer[1], to take enlarged radiators. The long hood of a Hood unit -style Diesel locomotive is as the name implies the longer of the two hoods (narrower sections of the locomotive body in front Instead of the standard seven access doors under the radiators, these units had eight.
It has been commonly believed these units were fitted with higher-capacity AR16 alternators, traction motors, possibly increased engine power, and Super Series speed control; however, Don Strack's research in Union Pacific's archives has proven that the UP units at least were not so equipped. alternator is an electromechanical device that converts mechanical energy to Alternating current electrical energy See also Electric vehicle, Electric motor A traction motor is a type of Electric motor used to power the driving wheels of a vehicle such as [1]
After a year's testing, the UP locomotives were fitted with standard engines and turbochargers. [1] It is probable that the BN locomotives were also similarly refitted. All of the BN units are still in service with successor BNSF Railway,[2] while of the UP locomotives two remain in service with UP, renumbered to UP 3412[4] and 3277[5] from UP 3806 and 3807. The BNSF Railway headquartered in Fort Worth, Texas, is one of the four remaining Transcontinental railroads and one of the largest railroad networks in Former UP 3805 is now in service with the Iowa, Chicago and Eastern Railroad as ICE 6406, and former UP 3808 now belongs to the Evansville Western Railway as EVWR 6003. The Iowa Chicago and Eastern Railroad ( IC&E) is a Class II railroad operating in the north central United States. The Evansville Western Railway is a Class III railroad in the United States. [3]
References
- ^ a b c d Strack, Don. All-time UP Diesel Roster, Part 46. Utah Rails. Retrieved on 2006-11-18. Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. Events 326 - The old St Peter's Basilica is consecrated 1302 - Pope Boniface VIII issues the Papal bull
- ^ a b EMD 776083, SD40SS, BN 7049-7053. The Unofficial EMD Homepage. Retrieved on 2006-11-18. Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. Events 326 - The old St Peter's Basilica is consecrated 1302 - Pope Boniface VIII issues the Papal bull
- ^ a b EMD 806053, SD40SS, UP 3805-3808. The Unofficial EMD Homepage. Retrieved on 2006-11-18. Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. Events 326 - The old St Peter's Basilica is consecrated 1302 - Pope Boniface VIII issues the Papal bull
- ^ Strack, Don. November 2003 UP Roster Changes. Utah Rails. Retrieved on 2006-11-18. Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. Events 326 - The old St Peter's Basilica is consecrated 1302 - Pope Boniface VIII issues the Papal bull
- ^ Strack, Don. June 2004 UP Roster Changes. Utah Rails. Retrieved on 2006-11-18. Year 2006 ( MMVI) was a Common year starting on Sunday of the Gregorian calendar. Events 326 - The old St Peter's Basilica is consecrated 1302 - Pope Boniface VIII issues the Papal bull
Dapyx Software network: MP3 Explorer | Ebook Manager | Zenithic