Knowledge

ALCO S-2 and S-4

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Conrad Yelvington Distributors, an aggregate supplier in Orlando, Florida, owns and operates six S-2 locomotives and one S-4 locomotive. The S-2's include former C&O 5029, B&O 516 Ontario Northland 1202 and 1201, and Seaboard Air Lane 1428 and 1431. They are now Conrad Yelvington locomotives
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The S-2 and S-4 are distinguishable externally from the very similar S-1 and S-3 660 hp (492 kW) switchers in that they have a larger exhaust stack with an oblong base and a larger radiator shutter area on the nose sides. The S-1/S-3 radiator shutter area is taller than it is wide, while
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runs one S-2 in regular tourist excursions, Mercury & Chase #213. It also owns another S-2, Mercury & Chase #484, which returned to service with #213 in 2018. The museum also has ex-Santa Fe #1534, an ALCO S-4 that is not in service.
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62, TLEW 112, a S-2 that was part of the original TLEW roster, now reduced to a parts unit as of 2010, TLEW 5109, a S-4, and the only operating ALCO on the line currently. 5109 recently was repainted into its original
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the S-2/S-4 radiator area is wider. The larger stack is due to turbocharging. The carbody and cab of late S-2s are nearly indistinguishable from those of S-4s. Hence, a truck swap can cause many to misidentify a unit.
518:. A total of 1,502 S-2s were built from August 1940 to June 1950; 797 S-4s were built from June 1949 to August 1957. The S-4 was first produced in Canada, with ALCO production beginning in June 1949. 521:
The S-2 and S-4 were designed as rail yard switchers, meant to replace older, less efficient, and more demanding steam switchers. They were a success, with many remaining in service today.
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operates five S-2 locomotives, MD&W 16, 17, 18, 19, and 20, which were formerly B&O 512, Y&N 220, Toledo Terminal 103, B&O 500, and Northern Pacific 716, respectively.
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9115 has been cosmetically restored at the West Chester Railroad. In 2022 it was repainted to its original B&O paint scheme. It is not currently in service
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ALCO S-4 units S-4 #102 (formerly D&H #3050) and S-4 #104 (formerly D&H #3036). As of 2020, all but #104 were operational on the tourist passenger and
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A few S-2s and S-4s are still in service on short line railroads around the United States. Several more are preserved in U.S. and Canadian railroad museums.
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Steinbrenner, Richard T. (2003). The American Locomotive Company: A Centennial Remembrance. On Track Publishers LLC, New Brunswick, NJ. ISBN 0-911122-07-9.
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Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Kalmbach Publishing Co., Milwaukee, WI. p. 224. ISBN 0-89024-026-4.
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Dorin, Patrick C. (1972). Chicago and North Western Power. Burbank, California: Superior Publishing. p. 136. ISBN 0-87564-715-4.
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In June 2023, the Western Maryland Rail Heritage Foundation called for donations to relocate an S-2 that was on a siding in Canada.
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224, 238, 239, 251, 317, and 366, respectively. The S-4, formerly C&O 5105, is now Conrad Yelvington locomotive 365.
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The Gold Coast Railway Museum possesses NASA S-2 #1, which was used to switch freight at NASA's Kennedy Space Center.
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The Houston Railroad Museum in Houston, Texas, has two S-2s: ex-Santa Fe #2350 and ex-Houston Belt and Terminal #14.
689: 561: 2013: 2322: 1817: 1580: 1445: 1052: 770: 718: 1997: 1971: 775: 660: 576: 2612: 2473: 2468: 622: 599: 678:, rosters an S-2 (#113) and an S-4 (#115). Both were built new for Michigan Limestone and Chemical Company. 2345: 1170: 524:
The locomotives' exterior was styled by ALCO engineer Ray Patten, who used curves in a mild application of
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units S-4 #3051 (formerly CN #8181) and S-7 #3052 (formerly CN #8223). In 2017, they acquired the former
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owns three ALCO S-2 locomotives and one ALCO S-4. TLEW 62, a S-2 purchased in 2012, ex.
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An ALCO S-2 built in 1946 was serving the Columbia & Reading Railway as #2-26 in
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563, one of two S-4s purchased by that railroad, is today preserved at the
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ALCO S-2 #224 CYDZ (Conrad Yelvington Distributors) in Orlando, FL.
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Erie Railroad S-2 518 is at The Meadville Railroad Depot Museum.
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Southern Pacific 1474 is in operation, in rotation, at the
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635 US gal (2,400 L; 529 imp gal)
913:"Museum Equipment Roster – North Alabama Railroad Museum" 2012: 641: 863:"Oil Creek & Titusville Railroad - Rolling Stock" 1053:"NASA's Famous Rocket Railroad Is Back in Business" 934:"Beech Mountain Railroad (WV): Map, Photos, Roster" 796:"Alco "S4" Locomotives: Roster, Dimensions, Photos" 363:1,595 cu in (26.14 L) per cylinder 2608:Diesel-electric locomotives of the United States 2529: 2578:Standard gauge locomotives of the United States 510:, the two locomotives differed mainly in their 1998: 1605: 1155: 621:An S-2 of D&RGW heritage survives on the 506:Powered by turbocharged, 6-cylinder ALCO 539 1620:Diesel and gas turbine locomotives built by 674:The coal-hauling Beech Mountain Railroad in 633:. This was one of the diesels that replaced 514:: the S-2 had ALCO "Blunt" trucks; the S-4, 2346:SC, SW, NC, NC1, NC2, NW, NW1, NW1A, NW4, T 365:9,572 cu in (156.86 L) total 2005: 1991: 1612: 1598: 1162: 1148: 732:New York, Susquehanna and Western Railway 653:Cooperstown and Charlotte Valley Railroad 2593:Diesel-electric locomotives of Australia 547: 470:United States, Canada, Mexico, Australia 2588:Standard gauge locomotives of Australia 2553:Diesel locomotives of Western Australia 2548:Diesel locomotives of the United States 648:, pulling a tourist train on weekends. 14: 2568:Railway locomotives introduced in 1940 2563:Railway locomotives introduced in 1949 2530: 2603:Diesel-electric locomotives of Mexico 2598:Diesel-electric locomotives of Canada 1986: 1593: 1143: 1050: 683:Minnesota, Dakota and Western Railway 439:1,000 hp (746 kW) @ 740 rpm 2583:Standard gauge locomotives of Mexico 2573:Standard gauge locomotives of Canada 832: 830: 828: 826: 824: 822: 820: 818: 816: 488:are 1,000-horsepower (746 kW) 24: 960:Pilbara Railway Historical Society 629:, and is in operable condition in 614:, the short-line railroad for the 298:14 ft 6 in (4.42 m) 260:30 ft 6 in (9.30 m) 25: 2624: 813: 788: 564:operates S-2s #75 and #85 on its 562:Oil Creek and Titusville Railroad 306:230,000 lb (100,000 kg) 1132:. Retrieved on 29 December 2005. 1123:. Retrieved on 29 December 2005. 1051:Leman, Jennifer (17 June 2020). 692:purchased an S-2 for use in the 250:or 118.31 ft (36.06 m) 40: 1581:List of ALCO diesel Locomotives 1070: 1044: 1019: 771:List of ALCO diesel locomotives 719:Western Pacific Railroad Museum 655:operates a pair of restored ex- 449:57,500 lb (26,100 kg) 1972:List of MLW diesel locomotives 989: 963: 951: 926: 905: 880: 855: 776:List of MLW diesel locomotives 737:sits cosmetically restored at 661:Concord and Claremont Railroad 627:Kentucky and Tennessee Railway 577:Toledo, Lake Erie, and Western 13: 1: 971:"NYS&W Alco S-2 #206 - 1" 781: 667:services between Milford and 623:Big South Fork Scenic Railway 600:North Alabama Railroad Museum 888:"TLEW.org :: Equipment" 642:Orange Empire Railway Museum 535: 7: 764: 709:Baltimore and Ohio Railroad 543: 10: 2629: 2494:National Railway Equipment 612:San Francisco Bay Railroad 588:colors in September 2013. 516:AAR type A switcher trucks 237:40 in (1,016 mm) 47:Grafton and Upton Railroad 27:Class of diesel locomotive 2492: 2459: 2336: 2193: 2160: 2107: 2024: 1967: 1946: 1900: 1844: 1816: 1730: 1679: 1628: 1578: 1537: 1516: 1502: 1444: 1368: 1267: 1181: 997:"Houston Railroad Museum" 501:Montreal Locomotive Works 466: 461: 457: 443: 435: 430: 426: 399: 389: 379: 369: 359: 349: 333: 318: 310: 302: 294: 272: 268:46 ft (14.02 m) 264: 254: 241: 233: 218: 182: 171: 162: 157: 153: 139: 99: 91: 77: 67: 62: 58: 39: 34: 703: 676:Alexander, West Virginia 49:#1001, an S-4, rests in 1093:Cite magazine requires 2218:1000-hp centercab 1538:Unproduced locomotives 1268:RS, RSC and RSD series 1126:Toppan, Andrew et al. 1117:Toppan, Andrew et al. 593:Columbia, Pennsylvania 553: 499:and Canadian licensee 290: in (3.11 m) 2318:2000-hp transfer 2313:1800-hp transfer 2213:600-hp centercab 1173:locomotives built by 669:Cooperstown, New York 616:Port of San Francisco 551: 103:S-2: August 1940 2613:Shunting locomotives 635:Southern 2-8-2 #4501 493:switcher locomotives 2208:100-ton boxcab 1129:Alco/MLW S-4 Roster 1120:Alco/MLW S-2 Roster 1007:on 11 February 2021 838:"Preserved Diesels" 743:Maywood, New Jersey 723:Portola, California 604:Huntsville, Alabama 586:Chesapeake and Ohio 431:Performance figures 145:S-2: 1502, S-4: 797 120:S-4: June 1949 2203:60-ton boxcab 1947:Bombardier designs 1517:Export locomotives 1001:www.kingswayrc.com 938:American-Rails.com 800:American-Rails.com 750:Muskogee, Oklahoma 688:In the mid-1960s, 665:maintenance of way 646:Perris, California 554: 128:– August 1957 2525: 2524: 1980: 1979: 1587: 1586: 1504:Diesel-hydraulics 1057:Popular Mechanics 698:Western Australia 657:Canadian National 631:Stearns, Kentucky 478: 477: 474: 473: 453: 452: 422: 421: 149: 148: 16:(Redirected from 2620: 2538:ALCO locomotives 2007: 2000: 1993: 1984: 1983: 1614: 1607: 1600: 1591: 1590: 1164: 1157: 1150: 1141: 1140: 1103: 1102: 1096: 1091: 1089: 1081: 1074: 1068: 1067: 1065: 1063: 1048: 1042: 1041: 1039: 1037: 1023: 1017: 1016: 1014: 1012: 1003:. 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Index

ALCO S-2

Grafton and Upton Railroad
Hopedale, MA
Diesel-electric
ALCO
MLW
AAR
Gauge
standard gauge
Trucks
AAR type A
Minimum curve
50°
Wheelbase
Prime mover
Alco
539T
Inline 6
Four-stroke
diesel
Turbocharged
Generator
Traction motors
Cylinders
Cylinder size
Tractive effort
diesel electric
switcher locomotives
ALCO

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